Potato fertilizer: The Best Fertilizer for Potatoes of 2022

The Best Fertilizer for Potatoes of 2022

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Growing potatoes is typically reserved for experienced gardeners because this tuber crop tends to be a bit finicky in terms of care requirements. Potatoes thrive in temperatures between 50 and 70-degrees Fahrenheit, require full sun, and need a loose, well-draining soil. Fertilizing is particularly important for potato crops, since they have somewhat high-maintenance nutrient needs. They need to be fertilized four to five times throughout their life cycle, and many farmers and gardeners use a different fertilizer blend each time.

With so many fertilizers available, it can be difficult for shoppers to narrow down their options. These recommendations for the best fertilizer for potatoes were selected for their quality, versatility, value, and ease of use. Keep reading to learn about the top features to consider when shopping, and then explore our picks for the best potato fertilizers on today’s market.

1. BEST OVERALL: Southern Ag All Purpose Granular Fertilizer
2. BEST VALUE: Miracle-Gro Water Soluble Plant Food
3. BEST ORGANIC: Dr. Earth Organic Tomato, Vegetable & Herb Fertilizer
4. BEST LIQUID: Fox Farm 6-4-4 Grow Big Liquid Concentrate Fertilizer
5. BEST FOR RAISED BEDS: Nature’s Care Organic & Natural Raised Bed Plant Food
6. BEST ALL-PURPOSE: Miracle-Gro Performance Organics Plant Nutrition
7. BEST LARGE QUANTITY: Jobe’s Organics All-Purpose Granular Fertilizer

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What to Consider When Choosing Fertilizer for Potatoes

While it’s easy to assume that all vegetable fertilizers offer similar performance, a number of factors affect their functionality. Just ahead are several of the most important features to consider when choosing the best potato fertilizer for your yard or farm.

Types

When it comes to choosing a fertilizer, gardeners have two primary types to choose from: liquid and granular.

• Granular fertilizers come in pellets or coarse powders and release nutrients over time, which is ideal for ensuring a proper balance of nutrition over a plant’s life cycle.
• Liquid fertilizers act quickly and are immediately absorbed by the plants in your garden.

Gardeners also have to decide whether they want to use organic and inorganic fertilizers—or a combination of the two. Organic fertilizers contain no chemicals and are made from completely natural ingredients. One of the biggest perks of organic fertilizers is that they continue to condition the soil over time. Most products on the market, however, are inorganic, and utilize powerful chemicals that are expertly formulated to make soil ideal for growing vegetables. It’s important to avoid fertilizers that include a weed killer, since this may also kill your growing potato plants.

Nutrients

Before choosing a potato fertilizer, it’s prudent to test your land’s soil to see which nutrients it’s lacking. The following nutrients are generally beneficial to potatoes when balanced in the appropriate ratios:

• Nitrogen stimulates stem and leaf development in plants, though an excess of nitrogen can negatively impact tuber growth.
• Phosphorus results in higher tuber yields.
• Potassium impacts plant output and reduces black spots.
• Magnesium improves the growing conditions of sandy, low-pH soils.
• Manganese helps to add acidity to high-pH soils.
• Boron helps potato plants absorb calcium from the soil and improves potato skin texture.

Season and NPK Ratio

Potato plants take between 3 and 4 months to develop, and throughout their growing process, their fertilization needs change. Consider the ideal NPK ratio, which is the percentage of nitrogen (N), phosphorus (P), and potassium (K)) for each stage of growth. When planting, an NPK ratio of 15-15-15 is ideal. A month or two after they’ve been planted, potatoes need lots of nitrogen, so a fertilizer with an NPK of 34-0-0 is the best choice. An NPK of 12-12-17 or 14-7-21 is best for the last couple of months before harvest when the plants require more potassium.

pH Level

The ideal soil pH level for growing potatoes is slightly acidic, between 4.8 and 6.5. It’s important to test the pH level of your soil before planting, to establish whether a fertilizer is needed to raise or lower pH levels. If the pH is too high, apply a horticultural sulfur to the planting area before planting in order to quickly lower it. Throughout the growing season, choose a fertilizer containing manganese, which will keep pH levels low.

Amount of Fertilizer

The amount of fertilizer gardeners should apply depends on the size of their garden and the quality of their soil. Generally speaking, a 1,000-square-foot potato garden requires approximately 25 pounds of fertilizer over the plants’ lifespan. Gardeners can use that figure to calculate how much fertilizer their specific plot of land requires.

Our Top Picks

Now that you’ve learned more about potato fertilizers, it’s time to start shopping. The following items are the top picks for the best potato fertilizers for your garden.

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Southern Ag’s granular fertilizer comes in a 5-pound bag and releases nutrients slowly over time, allowing gardeners to fertilize less frequently. It features a 10-10-10 balance of nitrogen, phosphorus, and potassium, meaning this is an all-purpose blend that works for both edible and nonedible plants. This balanced formula makes the Southern Ag fertilizer ideal for the initial fertilization process when the potatoes are planted.

To use, broadcast the granules over the garden plot and water them into the soil. The manufacturer recommends using 1 cup of fertilizer per 25 square feet of land.

Product Specs

• Type: Granular
• NPK Ratio: 10-10-10
• Quantity: 5 pounds

Pros

• Well-balanced trifecta fertilizer
• Good for all-purpose use
• Affordable price

Cons

• Only one size available

Get the Southern Ag potato fertilizer on Amazon and at Walmart.

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This natural fertilizer from Miracle-Gro features a unique, water-soluble formula that makes for easy application and gives plants an instant nutrient boost. With an NPK ratio of 18-18-21, it’s perfect for applying at the beginning of the growing season or in the last couple of months of growth when the potato plants require more potassium.

While it works well for potatoes, it’s also versatile enough to feed the other vegetables, fruit, and herbs in a garden. Miracle-Gro recommends applying this fertilizer every 1 to 2 weeks during the growing season. The 2-pound bag should feed 800 square feet.

Product Specs

• Type: Water-soluble
• NPK Ratio: 18-18-21
• Quantity: 2 pounds

Pros

• Well-balanced 18-18-21 formula
• Good for all-purpose use
• Affordable price

Cons

• Only one size available

Get the Miracle-Gro potato fertilizer at Amazon, The Home Depot, and Walmart.

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Those looking for the best organic fertilizer option should consider this formula from Dr. Earth. It contains probiotics, seven strains of soil microbes, and ecto and endo mycorrhizae (beneficial funguses), all of which contribute to a richer, more nutrient-dense soil. This formula is certified by the OMRI (Organic Material Review Institute) as well as the CCOF (California Certified Organic Farmers) as being organic and non-GMO.

Since it’s free of chemicals and synthetic ingredients, this product, which has an NPK ratio of 4-6-3, is safe to use around children and pets. In fact, it’s made from feed-grade ingredients, so it’s not a problem if your livestock gets into it.

Product Specs

• Type: Granular
• NPK Ratio: 4-6-3
• Quantity: 4 pounds

Pros

• Totally organic formula
• Good for all-purpose use
• Non-GMO or synthetic chemicals
• Slow-release nutrients

Cons

• Low NPK percentage

Get the Dr. Earth potato fertilizer at Amazon, The Home Depot, and Walmart.

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Fox Farm’s liquid fertilizer is versatile, containing earthworm castings, Norwegian kelp, and essential micronutrients with an NPK ratio of 6-4-4. This formula is best for the middle of a potato plant’s growth cycle because of its high proportion of nitrogen.

For the best results, the manufacturer recommends adding 2 teaspoons of liquid fertilizer to every gallon of water and applying the mixture every other time you water the garden. The fertilizer should only be applied once the new plantings have had a few days to settle in.

Product Specs

• Type: Liquid
• NPK Ratio: 6-4-4
• Quantity: 1 pint

Pros

• Can be used on both vegetables and flowers
• Concentrated formula
• Features high-quality ingredients

Cons

• Small size

Get the Fox Farm potato fertilizer on Amazon and at Walmart.

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Vegetables grown directly in native soil have a nutritional advantage, whereas those grown in containers or raised beds need an extra boost of nutrients in order to thrive. This formula from Nature’s Care has an NPK ratio of 10-2-8, making it ideal for the first couple of months of potato plant growth.

To use, sprinkle half a cup of the granules into each square foot of raised bed and work them into the top 6 inches of soil before watering thoroughly. At each subsequent feeding, use a quarter cup of fertilizer per square foot. The 3-pound bag should be sufficient to feed a 4-foot by 4-foot raised bed for approximately 2 months.

Product Specs

• Type: Granular
• NPK Ratio: 10-2-8
• Quantity: 3 pounds

Pros

• All-purpose formula
• High nutrient percentage
• Specially formulated for raised beds

Cons

• Granules must be worked into the soil

Get the Nature’s Care potato fertilizer on Amazon.

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Those with small gardens who are looking for a single fertilizer will be well served by this versatile option from Miracle-Gro, which caters to both flowers and edible plants. The built-in shaker applicator makes it easy to sprinkle the granules evenly throughout the garden.

For in-ground gardening, simply scatter the granules and then work them into the top 3 inches of soil. For container gardens, mix 2 tablespoons of fertilizer into every gallon of soil at the time of planting. If plants are already established, follow the instructions for in-ground gardens. Reapply the fertilizer every 4 to 6 weeks for the best results.

Product Specs

• Type: Granular
• NPK Ratio: 9-2-7
• Quantity: 2.5 pounds

Pros

• Suitable for containers or native soil
• Good for all-purpose use
• Convenient built-in applicator

Cons

• Only one size available

Get the Miracle-Gro potato fertilizer at Amazon, The Home Depot, and Walmart.

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With its 16-pound quantity and NPK ratio of 4-4-4, this bag of all-purpose fertilizer by Jobe’s Organics is an excellent all-around pick for most gardeners, whether they’re growing flowers, fruits, or vegetables. It’s completely organic, being certified by the OMRI, with a fast-acting granular formula. Due to its all-natural makeup, it’s safe to use around young children and pets.

The formula is designed to improve nutrient absorption; help plants resist pests; promote root growth; and create a healthy, diverse ecosystem in the garden. The bag is resealable, keeping the fertilizer fresh for longer.

Product Specs

• Type: Granular
• NPK Ratio: 4-4-4
• Quantity: 16 pounds

Pros

• Well-balanced 4-4-4 formula
• Good for all-purpose use
• Affordable price
• Smaller sizes available

Cons

• Low nutrient density

Get the Jobe’s Organics potato fertilizer on Amazon and at Walmart.

Our Verdict

After reviewing our guide, you’ll know more about shopping for fertilizer for your potatoes. We recommend the Southern Ag granular fertilizer for its balanced NPK ratio and excellent value. Those on a budget will appreciate the Miracle-Gro plant food, which offers top-notch quality at an affordable price.

How We Chose the Best Fertilizer for Potatoes

Years of experience covering home and garden products as well as extensive product research went into creating this guide. We explored more than 40 fertilizer options and weighed a number of practical considerations before making our recommendations.

We aimed to include fertilizers with a high number of nutrients and made sure to feature options with a variety of NPK blends for different times in the growing cycle. We took customer reviews into consideration when making our recommendations, ensuring users had a positive experience with the fertilizer in terms of performance, ease of use, and ultimate yield.

Additionally, growing your own vegetables should save money for your household. We aimed to include fertilizers that offered excellent value based on their quality and quantity.

FAQs

While you now know more about choosing the best potato fertilizer, you might need more information about how to use it. Here are answers to some of the most frequently asked questions about fertilizing potatoes.

Q: When should I start fertilizing my potatoes?

Fertilize the soil before planting, if needed. Alternatively, fertilize simultaneously while planting.

Q: How much fertilizer should I use on potatoes?

A 1,000-square-foot plot requires approximately 25 pounds of fertilizer throughout the season.

Q: How do I apply fertilizer to potatoes?

The application depends on the type of fertilizer being used. Liquid fertilizers are meant to be mixed with water and applied while watering. Granular fertilizers are sprinkled on top of the soil or mixed into the soil before planting.

Q: How do you increase the yield of a potato crop?

Increase your potato crop’s yield by initially cutting your seed potatoes into small pieces, about the size of a standard ice cube, and starting them in a warm area. Throughout the growing season, ensure the soil is well fertilized and isn’t allowed to dry out.

Q: Is Epsom salt good for potatoes?

Yes, Epsom salt contains magnesium, which is beneficial for potatoes and improves growing conditions.

Q: Do potatoes like coffee grounds?

Adding coffee grounds to your compost blend is a great way to increase growth.

10 Best Fertilizer For Potatoes + How To Use Them

We all recognize the potato as a familiar mainstay of modern cuisine. Yet, it has quite an illustrious past, dating back as far as 8000 BC. The Incas were the first to recognize this self-multiplying tuber as a rich source of calories, quickly adding it to their largely vegetarian diet.

In the 16th century, Spanish invaders added this new staple to their bounty. Upon return, cultivation spread throughout Europe. Allowing struggling countries to feed their rapidly growing populations and thus evolve into global powers.  

Centuries later, the humble spud has taken an honorable position in the top five vital crops. It’s also become the anchor of many a home garden and vegetable allotment. How to successfully grow these is not as complicated as you might think. It just takes a little patience, the right soil, and the best fertilizer for potatoes.

Table Of Contents

1. Best Fertilizer For Potatoes
2. Choosing The Best Fertilizer for Potatoes
3. Potato Fertilizer N-P-K Ratio
4. Soil pH For Potatoes
5. Types of Potato Fertilizer
6. Best Fertilizer For Potatoes Reviews
7. How to Fertilize Potatoes
8. Applying Fertilizer to Potatoes
9. When to Fertilize Potatoes
10. How Often Should You Fertilize Potatoes?
11. Verdict: Best Fertilizer For Potatoes
12. Potato Fertilizer FAQ

Best Fertilizer For Potatoes

If you’re in a hurry, the two potato fertilizers I have highlighted below offer high-quality nutrients that are perfect for use on potatoes and other root vegetables.

Best Top Dressing

Espoma Garden-Tone Fertilizer 3-4-4

Excellent slow-release organic fertilizer, ideal top dressing to work throughout the season.

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Easy-To-Use

Miracle-Gro Performance Organics 7-6-9

High potassium shakes and goes formula that’s well suited to homegrown root vegetables and fruits.

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Choosing The Best Fertilizer for Potatoes

Just like all other edible plants, potato crops need a healthy environment in which to thrive and will always benefit from boosts of nourishment throughout the growing season to encourage healthy growth and a bountiful harvest. Potato fertilizers can provide the nutrients needed to do just that but bear in mind, you must have the right balance of acidity in your soil too.

Potato tubers grown in loose, acidic soil will undoubtedly lead to a high yield. If you are unsure of the levels of acidity in your soil, I recommend testing these levels before you begin planting. You are looking for soil acidity pH levels ranging between 4.8 to 6.5. Anything outside of this range means your soil will need to be adjusted.

Thankfully, the potato fertilizer market offers a range of solutions that will meet your needs. Plus I have listed below some ideas for naturally supplementing your soil with various composting solutions that can help to adjust your soil type.

Once your soil is balanced accordingly and your potatoes are planted, you’ll need extra potassium and nitrogen to kickstart them on the road to success. Continued applications will help to form new tubers from which stems, foliage, and new potatoes will grow.

Potato Fertilizer N-P-K Ratio

For a hardy crop, you want a fertilizer NPK of around 2-2-3 (2% Nitrogen – 2% Phosphorus – 3% Potassium). You’ll also need the means to balance out your soil’s acidity.  Adding compost to your beds will really help to introduce additional nutrients that your potatoes crop will love. Plus, I have a few tricks up my sleeve to introduce some specific nutrients that target and boost individual stages of growth. Read on to find out more.

Here’s a brief look at those specific macronutrients that really encourage your potato crop along throughout the growing process.

Numbers on Fertilizer Packaging Explained in 60 Seconds

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Nitrogen

Nitrogen is fundamental to all plants. Potatoes, in particular, use nitrogen to fuel photosynthesis. This, of course, is the process by which plants convert solar energy into carbohydrates. Potato plants require high amounts of nitrogen to produce a large and nutritious yield. But, adding nitrogen must be carefully timed with specific stages of their development.

Phosphorus             

Once tubers begin to multiply, they’re all very responsive to a healthy dose of phosphorus. This encourages more offshoots, especially when grown in poor soil. Because tubers grow beneath the soil, making it difficult for us to see when this occurs, it’s best to work phosphorus to the soil at the time of planting.  

Potassium

Potassium is vital for a high yield. This macronutrient determines the effective transport of other essential nutrients and carbohydrates from the leaves to the tubers. Potassium also decreases the occurrence of internal blackening during development.

Beyond the garden, the benefits of potassium include an extended shelf-life and richer color and flavor when cooked.

Soil pH For Potatoes

Potatoes grow in a variety of different environments that have equally varying soil types. From sandy to clay loam to well-structured soil that allows for proper root aeration and tuber development. One important aspect of healthy soil is its pH level.

Potatoes successfully grow in soil with a pH range of 5.5 – 7.0 and some fertilizers will help support this. Anything outside of this range will have a visible impact on the vitality of your plants. Too high and the metabolism of nutrients is cut off, no matter how much you apply. Too low and your crops may suffer from heavy metal ion toxicity.

If you’re struggling with the concept of soil pH, or perhaps you just want to grow a smaller crop of spuds, then why not try and take full control by using a potato grow bag. You can then simply fill the grow bag with a shop-bought general compost and produce a nice crop of potatoes without needing to make any soil amendment.

Types of Potato Fertilizer

In my pick of the best fertilizer for potatoes, you’ll notice that I have focused my choices exclusively on natural and organic fertilizers. The reason for this is simple, edibles such as potato crops respond really well to soil environments that have been nourished with organic matter. But, aside from what’s good for our plants, who wants to douse the fruits of our labor in anything other than all-natural ingredients. If we are going to eat our crops then surely a non-synthetic fertilizer option is best.

For the most part, these organic fertilizers come in three main varieties:

Slow-Release vs Quick-Release Fertilizer For Potatoes

Choosing a slow or quick-release option simply depends on your preference and result expectations. Quick-release options typically come in a water-soluble form that conveys nutrients immediately upon application. Which can result in accelerated improvement, especially if tubers or seedlings are in less-than-desirable soil.

Heavily concentrated, slow-release options offer a steady, consistent stream of nutrients to plants over an extended period of time. Rather than inundating your plants with high doses of nutrients all at once, which could have a devastating effect. No watering is needed to activate and is less likely to leach into nearby surface or groundwater.

Organic Fertilizer For Potatoes 

Organic gardening means providing all the essential macro and micronutrients required by plants to produce robust tuber/root formation and crop growth. This is accomplished by manually providing plants with the same organic material as provided in nature. When mixed with handmade compost, elements like cottonseed meal and bone meal introduce vital macronutrients while also increasing the soil’s acidity.

These additives are especially beneficial in the soil where the pH is too high. Increasing your soil’s acidity lowers its pH level. Below, you’ll find several options that provide these organic elements all in one product.

Urea Fertilizer For Potatoes

Urea is a common source of nitrogen found in many fertilizer formulas. But, what is urea and how does it benefit your potatoes? Natural urea is a metabolic waste byproduct of animals and is thus considered an organic form of fertilizer. However, there are also synthetically manufactured forms that are not categorized as organic.

Either way, urea has become commonplace in potato farming for its heavy nitrogen content, relatively low cost, and continued effectiveness in the event of unexpected, excessive rainfall.  It’s also really effective through foliar absorption, making it easy to apply when plants grow too large for direct soil feeding.

Best Fertilizer For Potatoes Reviews

Through personal insight, research, and knowledge plus a wealth of potato growing expertise from some experienced horticulturalists, I’ve dug deep to pull together my recommendations for the best fertilizer for potatoes on the market.

I’ve taken the liberty of delving into the world of potato fertilizing in order to root out my list of picks for the 10 best fertilizers for a bountiful potato harvest to enable you to make the right choice for your spuds and give your crop the boost they need in no time at all.

The criteria are based on what I believe to be the best potato fertilizers based on overall performance and results, ease of use, as well as taking into account customer reviews from the major retail platforms and forums.

1. Espoma Garden-Tone Natural & Organic Fertilizer | 3-4-4

Best Top Dressing

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Pros      

• High yields from an organic product
• Results after just one week

Cons

• Organic odor may be attractive to pets

My first pick is an organic granular, formula from Espoma and it is perfect for growing potatoes if you already have nitrogen-rich soil. The 3-4-4 NPK balance plus exclusive Bio-tone microbes equal a consistent and steady disbursement of nutrition into the soil and can be used for all varieties of potato plants.

This is an easy formula to work with and can even be used if you have worked in aged compost to your soil. It’s a slow-release formula which means you can simply apply the first application in May to newly chitted potatoes and then repeat monthly thereafter throughout the growing season. This regular application will ensure that your plants are provided with a continuous source of macronutrients to support healthy growth and a plentiful crop. Check the latest price of Espoma Garden-Tone online here.

How To Use: Work the recommended amount into the soil prior to planting or apply to seedlings 7-10 days after planting. Repeat monthly from May to August.

Customer Reviews: Potato growers are reporting results within just 1 week of application and surprising bumper crops after a full season of using this organic product. Awarding Espoma’s Garden-Tone 4.7 out of 5 stars and my pick for best buy.

2. Miracle-Gro Performance Organics Nutrition 7-6-9

Easy-To-Use

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Pros      

• Vigorous growth and plant vitality with consistent use
• Increased yield with an organic NPK

Cons

• Not recommended for use as a water soluble

This slow-release option from Miracle-Gro is one of my top picks based on ease-of-use and price vs results. Well-known for dependability, Miracle-Gro’s new organic formula brings not only a bumper crop but also the peace of mind that comes from feeding my edibles something natural.

The increased ratio of potassium means you can expect a high yield and also increased resistance to disease as the tubers develop. Added potassium also means your harvest has the potential to keep for longer and be richer in color and flavor when cooked.

If that isn’t enough, this potato fertilizer has an endorsement by the Organic Materials Review Institute and can be used to fertilize pumpkin and other flowering edibles. Click here for details of Miracle-Gro Performance Organics from Amazon.com.

How To Use: The flip lid dispenser makes applying the granules easy and mess-free. Simply shake and pour around the base of your established plants. You will need to measure out your plot beforehand to make sure that you are not overfertilizing. Water as normal and repeat every 4-6 weeks throughout the growing season.

Customer Reviews: Following bountiful results, home-growers are pleased to see a proven organic option from a company whose products they’ve depended on for years. Large and plentiful potato harvests grant Performance Organics 4.6 / 5 stars.

3. Jobe’s Organics Vegetable And Tomato Plant Food | 2-5-3

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Pros      

• Quick infusion of nutrients using proprietary microbes
• Lasts up to 6 weeks

Cons

• May exhibit a slight organic odor

Of course, I can’t put together the best fertilizer list without including Jobe’s Organics. This easy-to-use granular choice employs aggressive micro-organisms that quickly break the granules down, sending nutrients to the roots faster than other slow-release feeds might. Not only will your crops benefit from faster growth and improved soil quality, but the formula also helps plants withstand unfavorable conditions and susceptibility to disease.

I sprinkled Jobe’s Organics in and around my potato crops, early in the season when the foliage hasn’t gotten too dense. The result is rich and luscious bright green foliage in no time. This can also be used for soil preparation in vegetable gardens or containers, and even on tender vegetable seedlings all through the growing season.

This is another fertilizer that comes with an OMRI-listed seal of approval. It means it is certified for organic gardening by USDA and there are no synthetic chemicals incorporated in this product. Click here to buy Jobe’s Organics Vegetable & Tomato Plant Food.

How To Use: Apply 1 ½ cups per foot of plant spread or 2 cups for plants 3 feet or wider.

Customer Reviews: Gardners new to cultivating potatoes have gained new confidence using Jobe’s granules. The vibrant, abundant foliage indicates mass tuber duplication resulting in a bountiful harvest. 4.6 out of 5

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4. Espoma Organic Bone Meal 3-15-0

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Pros      

• High phosphorus content for maximum tuber replication
• Only one application required at planting time

Cons

• Smell may be attractive to dogs after watering

Espona Organic Bone Meal is a great fertilizer if you need to add phosphorous and calcium to your soil. This can be done prior to planting in order to address low levels of acidity in the soil. I tend to use this fertilizer in soil that I am going to plant potatoes in the following year as it’s a slow-release formula that takes time to work effectively.

That being said, new potato crops that I have planted in bone meal fertilized soil really do benefit from the high phosphorus content and you can expect a surge of tuber offshoot growth right out of the gate. With just the right amount of nitrogen for solid stem and tuber formation. Buy Espoma Organic Bone Meal here.

How To Use: Work well into the soil at planting time, in the amount recommended on the label per sq footage.

Customer Reviews: Potato growers who have dogs in their families, as I do, love that this is an organic and safe product to use if they become “interested” in what they’re doing. Highly recommended if you’re going for a high yield. 4.8 out of 5 stars.

5. Miracle-Gro Shake ‘N Feed Fertilizer 10-5-15

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Pros      

• Versatile enough for use with all garden vegetables
• New calcium-added formula for higher quality crops

Cons

• Results may vary in nitrogen-poor soil

Miracle-Gro Shake n’ Feed has been a mainstay in my own garden regimen for years thanks to their excellent track record and range of fertilizers. In addition to the specially formulated micronutrients, this potato fertilizer contains an array of natural ingredients that help to feed the microbes in the soil. And it is these microbes together with the nitrogen-focused N-P-K that help to stimulate foliage and tuber growth throughout the growing season.

This feed also contains extra calcium for higher-quality potatoes with a longer shelf life plus protection against crop disorders that can lead to disease or failed crops.

I also find this feed is versatile enough to use in my garden beds as well as containers for all of my flowering edibles. Check prices at Amazon.com for Miracle Shake n’ Feed here.

How to use: I like to use this right at the start of the growing season before the real growing action gets underway. That way, the soil is primed and nutrient-rich ready to support new plant growth when it starts. This product is suitable for growing vegetables in containers and in the ground. Simply scatter the required amount in and around your vegetables once every 3 months during the growing season.

Customer Reviews: Gardeners, who used different feeds for different plants, really appreciate the ease of use and versatility of this product. And the new calcium-added formula is definitely a bonus. 4.7 / 5 stars.

6. The Old Farmer’s Almanac Organic Plant Food 8-4-8

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Pros      

• No Harsh odors or manure
• Immediate response in sprouting and tuber multiplication

Cons

• Over-watering organic feeds may result in fungus growth

Farmer’s Almanac plant food is OMRI listed and provides both quick and slow-release nutrients for potatoes in all stages of growth. You simply need to mix these granules into compost-amended soil and you won’t need to wait long to see results.

Another bonus of this potato fertilizer is it is an all-in-one organic product with no harsh odor. Old Farmer’s Almanac Organic Plant Food can be purchased here.

How To Use: Following the recommended doses per sq footage, spread granules evenly over your grow area. Repeat every 6-8 weeks.

Customer Reviews: Home-growers are recounting how fast their tubers started sprouting and multiplying when adding this product to freshly amended soil. Even in regions with harsh climates and short growing seasons. 4.5 out of 5 stars.

 7. Dr. Earth Organic Vegetable Fertilizer | 4-6-3

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Pros      

• Great value for money
• Probiotics and seven beneficial microbiotics

Cons

• Pets and wildlife may be attracted to the organic smell

Dr. Earth’s Organic fertilizer has a proven track record in effectiveness when used either as a top dressing or as a water-soluble tea. It contains probiotics and seven different types of beneficial macrobiotics all of which are said to help potato crops utilize nutrients effectively. The results that I have seen have resulted in twice the overall plant size. 

Click here for Dr. Earth Home Grown Vegetable Fertilizer.

How To Use: For new plantings: add 1 ½ cups to soil prior to planting. For established plants, apply ¾ cup for every 10 sq ft of growing area. Repeat every 2 months.

Customer Reviews:  Consumers are feeling Dr. Earth’s feed is great value for money. Putting it at the top of their “favorites” list. In small gardens, it can last for several growing seasons and the results are far better than other pricier options. Awarding it 4.6 out of 5.

8. Miracle-Gro Performance Organics Plant Nutrition | 11-3-8

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Pros      

• Quick-release for immediate nutrient absorption
• Helps to improve nutrient-poor soil

Cons

• May exhibit a slight organic odor

Performance Organics from Miracle-Gro also offers a water-soluble formula consisting of an 11-3-8 NPK and essential micronutrients for the same high yielding results, in less time.  I tried this with both my trusty watering can and hose attachment. Both of which delivered the same performance in organic nourishment as the granule option.

Buy Miracle-Gro Performance Organics Plant Nutrition from Amazon.com here.

How To Use: Add two level scoops to each gallon of water used. Apply once per week for consistent results.

Customer Reviews: Gardeners who are long-time users of Miracle-Gro’s flagship vegetable feed were hesitant to switch to an organic option until they saw the same, dependable results they expected. Reporting they’ll stick to organic now, going forward. Earning this quick-release option 4.6 / 5 stars.

9. Down To Earth Organic Vegetable Fertilizer | 4-4-4

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Pros      

• Powerful equal-ratio NPK, Gentle enough for heavily amended soil
• No harsh, organic odor

Cons

• May be at a slightly higher price point than others

My final pick is from Down-to-Earth. They strongly encourage the use of natural compost and have created this equal-ratio vegetable feed to perfectly compliment that recommendation. I never have to worry about plant burn when using this and my veggies forever thank me for it. Click here for Down To Earth Organic Veg Fertilizer.

How To Use: Apply ½ cup per sq foot of growing area and work into the top 3” of soil. Repeat twice per month throughout the growing season.

Customer Reviews: Gardeners across many review platforms are raving about the reasonable price and wonderfully organic results they’ve seen using this product. And without the typical odor associated with organic products. Calling it “their secret to success”. 4.7 out of 5.

How to Fertilize Potatoes

So, as we’ve seen the best fertilizer for potatoes in your garden could be one product for the whole season or a couple of different types to apply through different stages of development. For an immediate boost in tuber reproduction, introduce a healthy amount of phosphorus at first planting. This will lead to a bumper crop later in the season.

For healthy vines and foliage emerging from all those tubers, an infusion of nitrogen will encourage lush growth, increasing photosynthesis and energy that is sent directly back to the tubers.  Finally potassium, so your plants can efficiently metabolize all the nutrients you give them.

Tips For Fertilizing Potatoes   

Growing potatoes organically isn’t as challenging as some may think. It just requires a little research into soil conditions, understanding what nutrients your tubers need and when, and finally knowing what organic substances you can apply that contain those needed nutrients.  The above options can easily provide those for you without all the fuss.

For those gardening in higher altitudes, potatoes are a perfect crop as they’re actually adapted to higher elevations and harsher growing conditions. If you live in a short-season climate, Queen Anne and Torino potato tubers have fast maturity times, are disease resistant, and have a long shelf life.

Healthy Potatoes    

Modern dietary habits have gotten a bad rap for being too carb-heavy and thus, assumed unhealthy. Yes, carbs do become sugars in the body and can contribute to excess weight if we don’t use those carbs as the energy source they’re meant to be and work them off.

In reality, potatoes are actually nutrient-packed, culinary titans, and absolutely fine if eaten in moderation and as part of a varied diet. In fact, potatoes are actually high in potassium, vitamins, iron and have shown to be important factors in fighting cancer and glaucoma.  They’re not quite the empty-calorie stomach fillers they’ve been made out to be.

Producing More Tubers

Phosphorus, potassium, and calcium have very positive effects on tuber replication. As we’ve discussed, nitrogen also contributes to this by increasing healthy foliage which diverts energy back to those tubers.

A second way to promote a higher yield is how deep you plant your initial tubers. Trenches no more than 8”-10” deep are recommended. You want the main stem coming from each tuber to be as long as possible. The longer it is, the more roots grow from it. Increasing the opportunity for nutrient intake and, of course, more tubers.

Applying Fertilizer to Potatoes

The final step in proper potato fertilization is understanding the kind of potatoes you’re growing. Different types of spuds have different rates of growth and harvest times. When to fertilize and how much will greatly depend on these factors. Let’s take a look at the two main categories.

Potato Plant Fertilizer For First and Second Earlies       

The term “earlies” describes the early harvest times of certain potato varieties. Examples of early potatoes would be the Lady Christl and Rocket varieties. First earlies grow the fastest at 10-12 weeks to harvest,  with second earlies at around 14-16 weeks. These are popular due to them being ready so early and in being so, they are far less prone to blight.

Some phosphorus-rich feeds can be applied at the time of planting,  while other more balanced ones can be applied two weeks after. Continue feeding, per label instructions but stop 2 weeks prior to harvest.

Potato Plant Fertilizer For Maincrop Potatoes

Maincrop potatoes are the largest varieties that take the longest to mature. Anywhere from August to October, depending on how big you want them to get. Examples of these would be Pink Fir Apple, Maris Piper, and Sarpo Mira.

With a longer growing season comes the need for more fertilizer than earlies, roughly 25% more. Phosphorus at the time of planting is crucial for these varieties to reach a maximum size and high yield potential. A steady stream of nitrogen will keep foliage lush and effective in acquiring energy for tubers and potassium to make sure the flow of nutrients is unimpeded.

When to Fertilize Potatoes

To re-cap, depending on the condition of your soil, fertilization could begin from the moment of first planting in spring. How late into the growing season you need to continue fertilizing depends on the variety you’re growing.

How Often Should You Fertilize Potatoes?

How often you feed your spuds will be dependent on the method of an application built into your choice of feed. Quick-release options may need to be applied more frequently with the benefit being faster delivery of nutrients.

Slow-release fertilizers may only need to be added every few months for a more gradual stream of nourishment.

Verdict: Best Fertilizer For Potatoes

The verdict is in! The best fertilizer for potatoes growing in your little patch of heaven will be just as unique as you, the gardener who tends them. Specific to your particular soil conditions, climate, potato variety, and application preference.

So, what will it be? Will you choose Espoma Garden-Tone, with its exclusive Bio-tone microbe formulation that ensures a steady flow of nutrients throughout the growing season?

Best Top Dressing

Espoma Garden-Tone Fertilizer 3-4-4

Excellent slow-release organic fertilizer, ideal top dressing to work throughout the season.

Check Price

Or, what about good-old, dependable Miracle-Gro Performance Organics? This one has an increased ratio of potassium so you can expect a high yield and also increased resistance to disease.

Easy-To-Use

Miracle-Gro Performance Organics 7-6-9

High potassium shakes and goes formula that’s well suited to homegrown root vegetables and fruits.

Check Price

Alternatively, what about Jobes Organics Vegetable and Tomato Plant Feed? This easy-to-use granular choice brings you aggressive micro-organisms that help to send nutrients to the roots faster than other slow-release feeds might, meaning your crops will grow faster and benefit from improved soil quality.

In my list of picks, I’ve included a variety of different options to meet the needs of your special potato patch for a successful and bountiful harvest. Now it’s down to you to decide.

Potato Fertilizer FAQ

Why are my potatoes so small?

Some plants will grow smaller than others due to a few taking in more nourishment. But, if this is a crop-wide issue, it could be due to a lack of sunlight, extreme temperatures, inconsistent watering, or a lack of nutrients.

How to grow a potato plant indoors?

Fill a 12-liter potato grow bag or bucket with 6” of soil. Plant your potato 3” down in the soil and keep it moist. As it grows, add a bit more soil to accommodate the growing plant. Once leaves turn yellow, the new tubers are ready for harvest.

Why are my potato plants not flowering?

While many potato varieties do produce flowers, they are not required for a successful potato crop. Some varieties don’t flower at all. If your potato variety typically flowers but is not, it may be due to environmental factors. But, it should not affect your yield.

The Best Way to Fertilize Potatoes for Optimal Harvests — Bustling Nest

Potatoes are a popular crop in home gardens for good reason. Unfortunately, many home gardeners mistakenly under-fertilize their plants, resulting in lower yields. They require different feeding than other garden plants, therefore let’s talk about the best technique to fertilize potato plants to get the biggest harvestable yield possible!

The answer to how much and when to fertilize your plants for best yield is not the same for all gardeners. Individual factors must be taken into account. It is necessary to discuss some of the science behind fertilization in order to properly understand it.

The Importance of Proper Nutrient Amounts

Plants require particular minerals for growth, and if any of these nutrients are deficient, the plant suffers in some way. Hidden hunger occurs when a nutritional deficit exists yet physical signs are not obvious on the plant. Future yield reductions occur as a result of concealed hunger.

This signifies that plants are getting enough nutrients to develop and aren’t showing signs of malnutrition, but it’s not ideal nutrition. The plants appear healthy—and they most likely are—but they don’t have any extra to invest in their future, and yields suffer as a result.  

However, feeding too much is also harmful since it can cause toxicities within the plant, and too much soil nitrogen or phosphorus is harmful to the environment.

Managing Nutrients in the Garden

Growing potatoes in the backyard differs significantly from commercial production, particularly in terms of nutrient management. Throughout the season, field-grown spuds are meticulously monitored and sampled to optimize plant nutrient concentrations and harvest numbers. This method is critical for profit maximization, but it is not always practicable in a home garden.

Commercial producers collect randomized petiole samples from their fields and analyze them for nutrient concentration (the petiole is the tiny stem that connects the leaves to the main stem) (in parts per million or ppm). They may now fine-tune their fertilization rates and adjust their fertilizer approach on the go as a result of the outcomes. As a result, they can avoid not just hidden hunger, which can dramatically reduce yields, but also overapplying fertilizer.

Tissue sampling requires more time and money than many home gardeners are willing to invest. However, there are techniques to optimize fertilizer management in your garden. Looking at the big picture and not applying fertilizer at a set pace is one of the most important factors.

Application Amounts

You should not fertilize potatoes based solely on online recommendations. You know, the ones that recommend applying 30 pounds of fertilizer per 1,000 square feet, or about one pound of fertilizer for every 10 feet of row. These solutions do not take into account the details of your circumstance. Application rates vary for a variety of reasons and should take soil sampling and testing into account.

Professional soil test results are crucial for growing potatoes in order to maximize your yield. They will tell you how much of each nutrient is present in the soil and how many more parts per million (ppm) you may expect to observe as the organic matter decomposes over the course of the season. It will also tell you the pH of the soil, which has a significant impact on nutrient availability.

Once you have these data, you may calculate the fertilizer application rates that are appropriate for your situation.

Optimal Fertilizer Ratio

Potatoes should also not be fertilized using a product that has a balanced N-P-K ratio. Because potatoes are root vegetables, they benefit from higher levels of phosphorus and potassium to stimulate tuber growth rather than nitrogen, which promotes vegetative growth. As a result, use a fertilizer with higher P and K levels than N, such as a 5-10-10 or an 8-24-24.

Other nutrients found in a good fertilizer include sulfur, copper, manganese, zinc, and boron. These nutrients are required in smaller quantities than N-P-K, yet they are equally important for healthy growth. When they are lacking, they have a negative impact on growth and yield.

Fertilizer Application Schedule

General recommendations instruct gardeners to apply a pre-plant and then fertilize monthly starting two weeks after planting. However, many extension professionals recommend applying fertilizer to the soil before planting and waiting on other applications until after tuber formation. Too much nitrogen early on may delay or inhibit tuber formation, reducing the size, specific gravity, and overall potato yield.

How the applications are split and the rate at the different times in the season varies depending upon the maturity type planted.

• Early-season potatoes: Irish Cobbler, Caribe, Norland, Yukon Gold
• Mid-season potatoes: Russet Burbank, Red Pontiac, Viking, Yukon Gem, French Fingerling
• Late-season potatoes: Kennebec, Purple Peruvian, Butte, Katahdin, King Harry, Russet Norkotah

Pre-Planting

If you are growing early maturity spuds, apply two-thirds of the total nitrogen needed for the season as a pre-plant application. If you are growing medium to late maturity types, only apply one-third of the total nitrogen for the season before planting. Mix this pre-planting application into the soil as hills are formed for all types.  

A more significant nitrogen application at planting starts the seed potatoes off with plenty of nitrogen to kick start early vegetative growth. The soil nitrogen helps the plants rapidly grow and begin photosynthesizing.

After Tuber Formation

About six or seven weeks after planting, begin more regular fertilizer applications. Split the remaining nitrogen amount into two or three applications delivered about two weeks apart. These applications should be side-dressed, where the fertilizer is placed off to the hills’ side to prevent root damage from the fertilizer salts. 

As a general rule, never side-dress more than half the fertilizer applied at planting at any one time.

Other Tips for Optimizing Harvests

• Make sure plants are adequately watered. Depending on the cultivar, they need 12 to 16″ of water during the growing season, and consistent watering is crucial when the tubers enlarge. Water the soil thoroughly once or twice a week to encourage the roots to grow deep into the ground.
• Start with quality, certified disease-free seed potatoes suited to your growing zone. Do not use grocery store potatoes because they have been treated with sprout inhibitors for long-term storage.
• Allow the eyes to sprout successfully before planting seed potatoes, and only plant sprouted pieces.
• Keep the growing bed free of weeds by consistently pulling competitors by hand. Avoid hoeing or using herbicide to prevent damage to the developing tubers.
• Chop off the tops of the vines 2 to 3 weeks before you plan to harvest. Once the plant stops actively growing, the skins toughen up a bit. A thicker skin makes the spuds easier to handle, and they store better. At this time, quit watering and fertilizing as well. 
• Be mindful of crop rotation when planting potatoes. Choose a spot where you haven’t grown potatoes, tomatoes, eggplants, peppers, or tomatillos in three or four years.
• Regularly scout your plant(s) for insect infestations and treat any problems quickly.  
• Avoid using manure as a fertilizer immediately before planting or during the growing season. It tends to promote scab development on potatoes.
• Potatoes prefer a soil pH between 5.0 and 6.0. If your soil acidity is too low, you can add gypsum; if the soil pH is too high, you can add lime as a soil amendment to make it more acidic.

Carley Miller

Carley Miller is a horticultural expert at Bustling Nest. She previously owned a landscaping business for 25 years and worked at a local garden center for 10 years.

What Is The Best Fertilizer For Growing Potatoes? – GrowerExperts.com

Have you grown potatoes in the past and they turned out very small? If the answer is yes, then there will likely be a few reasons why this happened. One of the most important questions will be how much fertilizer was applied. But do you know what is the best fertilizer for growing potatoes?

The main mistake which many people make is not knowing the N,P,K breakdown of the soil. Not knowing these figures means the soil may not contain the right ratios of these nutrients to grow a crop of large potatoes.

Potatoes need fertile soil to grow successfully – if you skip this your crop will suffer in size and development.

What is even more important is getting the ratio of N, P, and K correct for growing potatoes. If you add large amounts of the wrong nutrient like nitrogen (potatoes do not need large amounts of nitrogen) then you will be doing more harm than good)- more on this later.

How to test soil for nutrients

You should carry out a soil analysis by either buying a soil test kit online or by sending a sample of your soil to an agricultural testing lab. I have found many of the kits online in which you do the analysis are hard to interpret and are a little vague. A more specific way to do soil analysis would be to get your local Agri supplies stores to arrange it.

After collecting the soil sample you put it into the bag and send it off to be analysed. An accredited lab tests it and sends you the results. The accredited lab should email you the results within a couple of weeks.

What type of fertilizer?

Choosing the type of fertilizer for growing your potatoes is a matter of personal preference. There are many different ways you can help your potatoes to grow, you can choose the organic route or standard chemical fertilizer.

Whichever way you choose to fertilize your crop (and you will need to apply some type of fertilizer to grow a good crop of potatoes) you need to decide if you are going to apply your fertilizer in a general way or if you want to add it in a specific way.

Adding farmyard manure/ compost for potatoes

Farmyard manure is a good alternative to chemical fertilizers

For those who want to add fertilizer in a general way, I would recommend adding a wheelbarrow of farmyard manure or compost per 4m2 in autumn and digging it in well, and letting it sit until spring when you can rototill it to a fine tilth before planting.

I have an article which shows you how you can make your own fertilizer for potatoes.

More Specific Knowledge

For those who want to apply more specific knowledge to adding chemical fertilizer, the first thing you should do is to carry out soil analysis.

This begins by collecting a soil sample and either testing it yourself using a soil test kit bought online, or by sending in your sample to your local Department of Agriculture for them to analyse.

Collecting your soil sample

To take your sample in a small area (less than a couple of m2) you simply dig down 4-6 inches and grab a handful of soil.

For larger areas, you make an imaginary x from corner to corner of your plot and take a handful every few steps along the two lines.

Mix these sub-samples together and take one sample from it. This will mean your small sample is made up of lots of small parts from all over your plot.

Reading Your Soil Analysis Report

When you receive your soil analysis results or complete your test you will have figures which relate to the amounts of Nitrogen (N) Phosphate (P) and Potash (K) that are present in your soil.

Now you have real data on how much of these nutrients are present, you should then consult the fertilizer manual I have linked to below to find out how much more of these nutrients you need to add to your soil for the crop you have chosen to grow.

These fertiliser articles are very useful reading. https://www.ers.usda.gov/topics/farm-practices-management/crop-livestock-practices/

Here is some information on a soil analysis test: https://efotg.sc.egov.usda.gov/references/public/WI/Soil_Quality_Test_Kit_Guide.pdf

This is typical of the layout of the soil analysis report you receive.

Using this report you will be able to accurately apply the correct amount of nutrients for the crop you have chosen.

What is the best fertilizer for growing potatoes?

The best fertilizer for growing potatoes is one that has relatively low Nitrogen (N) and is at least twice as high in Phosphorous (P) and Potash (K). A good example of a suitable potato fertilizer ratio would be a 5-10-10. A developing potato plant should have lower Nitrogen to prevent the top from becoming too lush and susceptible to diseases such as potato blight. The higher P and K are necessary for the potato tubers to grow large and healthy.

I have included an example of a good potato fertilizer in the link below. It is higher in P and K and lower in Nitrogen. This is essential for the proper development of your potatoes – especially for growing larger potatoes and keeping the potato tops size in check.

This potato fertilizer is: Urban Farmer Organic Potato Fertilizer with an N-P-K ratio of 3-6-6

Simply scatter the fertilizer over the tilled ground at planting time, or lay a trickle of fertilizer in the bottom of the trench you are planting into. As the season progresses you can check how they are growing to see if they need further application. Good luck!

I have made a short video of this article to act as a summary of the main points

What Kind of Fertilizer Is Needed for Potato Plants? | Home Guides

By Bridget Kelly Updated December 17, 2018

Growing potatoes (Solanum tuberosum) so they become big requires proper preparation of the soil at planting time. Providing the seed potatoes with deep, loose, acidic soil with a pH from 4.8 to 6.5, and adding lots of potassium and nitrogen, helps them get off to a strong start. Later in the season, the potato plants require an additional shot of fertilizer to form tubers. The amount of fertilizer to use depends on the results of soil tests. Potatoes grow best when temperatures are 50 to 70 degrees Fahrenheit.

Cover Crops

If you plan to grow potatoes organically, you can choose from two soil preparation methods: cover crops and organic fertilizers. Cover crops, such as soybeans, are grown in fall and then dug into the soil in early spring, one month before planting potatoes. Legumes are ideal cover crops because they help to fix nitrogen in the soil for the potatoes. Cereals, grasses and crucifers are also commonly grown as cover crops.

Organic Fertilizers

When soil is prepared for most vegetable crops, fertilizer is blended into the soil. When soil is top-dressed, the fertilizer sits on top of the soil. In lieu of growing a cover crop, many organic gardeners top-dress the soil with compost and well-rotted manure, such as poultry manure. Compost helps the soil retain moisture, and well-rotted manure helps to lower the soil’s pH and adds nutrients. The manure and compost can be mixed with bone meal, greensand and kelp meal to round out the pre-planting fertilizer program. The manure mixture is added to the soil after planting furrows are dug.

Non-Organic Fertilizer

Standard, or non-organic, fertilizers contain chemicals that may burn seed potatoes. So they need to be incorporated into the soil before planting. Using 15 pounds of 15-15-15 fertilizer per 1,000 square feet of soil or 23 pounds of 10-10-10 fertilizer per 1,000 square feet of soil is recommended in an Oregon State University Extension online article. It suggests broadcasting one-half of the fertilizer onto the soil surface, working the fertilizer into the top 3 or 4 inches of soil and then placing the remaining one-half of the fertilizer in bands that each are 3 inches from the side of, and 1 inch beneath, the seed potatoes. The latter method is called a side-dressing. Using a combination of the broadcasting and side-dressing methods to apply fertilizer, it states, typically is more effective than using only one of those fertilization methods.

Post-Planting Fertilizer

Organic gardeners use a variety of fertilizers during the growing season after they plant seed potatoes. Using a mixture of cottonseed meal, bone meal and greensand increases the soil’s acidity and provides nitrogen, potassium and phosphorous. A small amount of kelp meal combined in the mixture supplies trace minerals. That fertilizer typically is side dressed just after the seeds sprout. Some growers choose to feed the foliage every two weeks with fish emulsion or kelp extract from the foliage’s emergence and until bloom. Six weeks after planting, non-organic gardeners can side-dress the same fertilizer they applied when they planted the potatoes but use only one-half as much as they used then.

Nutrients and Micronutrients

If your potato plants turn light green or yellow while the leaf veins remain green, or if they take on a scorched appearance, the soil may be deficient in nutrients. The most common deficiencies when growing potatoes are magnesium and sulfur. Iron and manganese, both micronutrients, are essential for potatoes as well. The first step in curing these deficiencies is to have the soil tested or to test it yourself with a soil testing kit to determine which nutrient or micronutrient causes the problem. Once the deficiency is identified, you can apply the appropriate fertilizer to cure it.

References

• University of California, Vegetable Research and Information Center: Growing Potatoes Organically, Basics from Seed to Storage
• Berkeley Horticultural Nursery: Growing Potatoes
• McGill University, Ecological Agriculture Projects: Cover Cropping in Potato Production
• Oregon State University Extension Service: Grow Your Own Potatoes
• University of Idaho Extension: Idaho Nutrient Management — Potato

Writer Bio

Based in the American Southwest, Bridget Kelly has been writing about gardening and real estate since 2005. Her articles have appeared at Trulia.com, SFGate.com, GardenGuides.com, RE/MAX.com, MarketLeader.com, RealEstate.com, USAToday.com and in “Chicago Agent” magazine, to name a few. She holds a Bachelor of Arts in English with a concentration in creative writing.

Potato Fertilization on Irrigated Soils

1. Home
2. Crop production
3. Nutrient management
4. Crop-specific needs
5. Potato fertilization on irrigated soils

Optimum potato growth depends on many management factors, including a sufficient supply of nutrients.  Potatoes have a shallow root system and a relatively high demand for many nutrients (Table 1). A comprehensive nutrient management program is essential for maintaining a healthy potato crop, optimizing tuber yield and quality, and minimizing undesirable impacts on the environment.

Irrigated potatoes are usually grown on coarse-textured soils low in organic matter. Typically, these soils are sandy loams or loamy sands, low in native fertility, and quite acid. The crop’s high nutrient demand coupled with low native fertility means that potatoes often have high fertilizer requirements. Over the years, however, continued fertilizer applications can build up the soil test levels of certain nutrients. Base your nutrient management program on soil test recommendations, plant tissue testing, variety, time of harvest, yield goal and the previous crop in the rotation.

Nutrient removal by the potato crop

The amount of nutrients removed by a potato crop is closely related to yield (Table 1). Twice the yield will usually result in twice the removal of nutrients. The vines take up a portion of the nutrients needed for production. The rest goes to the tubers and is removed from the field with harvest. The purpose of Table 1 is to provide relative uptake of essential elements for potato production. Do not use the table as a basis for fertilizer recommendations.

Table 1. Uptake of soil nutrients by potato vines and tubers as a function of tuber yield.

Nutrient	Nutrient uptake from vines	Nutrient uptake tuber yield: 200 cwt/A	Nutrient uptake tuber yield: 300 cwt/A	Nutrient uptake tuber yield: 400 cwt/A	Nutrient uptake tuber yield: 500 cwt/A	Nutrient uptake tuber yield: 600 cwt/A
Nitrogen (N)	90 lb/A	86 lb/A	128 lb/A	171 lb/A	214 lb/A	252 lb/A
Phosphorus (P)	11 lb/A	12 lb/A	17 lb/A	23 lb/A	28 lb/A	35 lb/A
Potassium (K)	75 lb/A	96 lb/A	144 lb/A	192 lb/A	240 lb/A	288 lb/A
Calcium (Ca)	43 lb/A	3. 0 lb/A	4.4 lb/A	5.9 lb/A	7.4 lb/A	8.9 lb/A
Magnesium (Mg)	25 lb/A	5.9 lb/A	8.9 lb/A	11.8 lb/A	14.7 lb/A	17.6 lb/A
Sulfur (S)	—	8.8 lb/A	13.2 lb/A	17.6 lb/A	22.0 lb/A	26.4 lb/A
Zinc (Zn)	0.11 lb/A	0.70 lb/A	0.11 lb/A	0.14 lb/A	0.18 lb/A	0. 22 lb/A
Manganese (Mn)	0.17 lb/A	0.03 lb/A	0.04 lb/A	0.06 lb/A	0.07 lb/A	0.08 lb/A
Iron (Fe)	2.21 lb/A	0.53 lb/A	0.79 lb/A	1.06 lb/A	1.32 lb/A	1.58 lb/A
Copper (Cu)	0.0 lb/A	0.04 lb/A	0.06 lb/A	0.08 lb/A	0.10 lb/A	0.12 lb/A
Boron (B)	0.14 lb/A	0. 03 lb/A	0.04 lb/A	0.05 lb/A	0.06 lb/A	0.07 lb/A

Table 2. Suggested nutrient concentration sufficiency ranges in potato tissue collected from the 4th leaf from the top of the shoot during tuber bulking stage (3 growth stages for petiole nitrate-N)

Element	Petiole sampled	Whole leaf (leaflets + petiole) sampled
Total N	—	3.5-4.5 %
Vegetative Nitrate-N	1.7 – 2.2 %	—
Tuber bulking Nitrate-N	1.1 – 1.5 %	—
Maturation Nitrate-N	0. 6 – 0.9 %	—
Phosphorus	0.22 – 0.40 %	0.25 – 0.50 %
Potassium	8.0 – 10.0 %	4.0 – 6.0 %
Calcium	0.6 – 1.0 %	0.5 – 0.9 %
Magnesium	0.30 – 0.55 %	0.25 – 0.50 %
Sulfur	0.20 – 0.35 %	0.19 – 0.35 %
Zinc	20 – 40 ppm	20 – 40 ppm
Boron	20 – 40 ppm	20 – 40 ppm
Manganese	30 – 300 ppm	20 – 450 ppm
Iron	50 – 200 ppm	30 – 150 ppm
Copper	4 – 20 ppm	5 – 20 ppm

Table 3.

Petiole sap nitrate-N sufficiency levels for Russet Burbank potatoes

Time of season	Stage of growth	Sap NO3-N
Early	Vegetative/tuberization (June 15-June 30)	1200 – 1600 ppm
Mid	Tuber growth/bulking (July 1-July 15)	800 – 1100 ppm
Late	Tuber bulking/maturation (July 15-August 15)	400 – 700 ppm

Soil pH

One of the more important chemical properties affecting nutrient use is soil pH. Many soils used for potato production have become more acid over time due to use of ammonium fertilizers and leaching of cations from the root zone. Acid conditions are generally better for reducing common scab (Strepotmyces scabies), which is most widespread when soil pH is above 5.5. Use of liming amendments is often avoided to minimize scab. Controlling scab in this manner, however, can result in a soil pH that will cause nutrient imbalances. Once soil pH drops below 4.9, nutrient deficiencies and toxicities become more common. In particular, Mn and aluminum (Al) toxicity and P, K, Ca, and Mg deficiencies may occur in these low pH soils. The problem may not be prevalent through the entire field, but may occur in smaller areas where the soil consists of higher sand or lower organic matter content. In some cases, grid sampling a field for pH may be useful to identify areas that need correction. If you need to take corrective measures, lime the soil to a pH of 5.5 during a year in the rotation when potatoes are not grown. We also recommending using scab-resistant varieties to maintain desirable pH range. Irrigation water can be quite alkaline in Minnesota and may also help to slow down soil acidification processes.

Nutrient management suggestions

Potatoes have a relatively shallow root system with most roots located in the top 1.5 to 2 feet of soil. We recommend using banded fertilizer two to three inches below and two to three inches to the side of the tuber at planting to supply all or a portion of immobile nutrients, such as phosphorus and potassium. For most efficient fertilizer use, select a practical yield goal. Reasonable yield goals are usually set at 15 – 20 percent higher than a grower’s average for the past 5 years. For potatoes, yield goal is associated with market class, growth habit (determinate or indeterminate) and the time of the season the vines are killed.

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Table 4.

Nitrogen recommendations in pounds per acre (lb/A) for irrigated potato production by previous crop and soil organic matter content (OM).

Yield goal3	Harvest4	Alfalfa1: Low2 OM	Alfalfa1: Med-High OM	Soybeans, field peas: Low2 OM	Soybeans, field peas: Med-High OM	Group 1 crop: Low2 OM	Group 1 crop: Med-High OM	Group 2 crop: Low2 OM	Group 2 crop: Med-High OM
<250 cwt/A	Early	0 lb/A	0 lb/A	80 lb/A	60 lb/A	60 lb/A	40 lb/A	100 lb/A	80 lb/A
250-299 cwt/A	Early	25 lb/A	0 lb/A	105 lb/A	85 lb/A	85 lb/A	65 lb/A	125 lb/A	105 lb/A
300-349 cwt/A	Early	50 lb/A	30 lb/A	130 lb/A	110 lb/A	110 lb/A	90 lb/A	150 lb/A	130 lb/A
350-399 cwt/A	Mid	75 lb/A	55 lb/A	155 lb/A	135 lb/A	135 lb/A	115 lb/A	175 lb/A	155 lb/A
400-449 cwt/A	Mid	100 lb/A	80 lb/A	180 lb/A	160 lb/A	160 lb/A	140 lb/A	200 lb/A	180 lb/A
450-499 cwt/A	Late	125 lb/A	105 lb/A	205 lb/A	185 lb/A	185 lb/A	165 lb/A	225 lb/A	205 lb/A
500+ cwt/A	Late	150 lb/A	130 lb/A	230 lb/A	210 lb/A	210 lb/A	190 lb/A	250 lb/A	230 lb/A

Group 1 crops:

• alfalfa (poor stand)¹
• alsike clover
• birdsfoot trefoil
• grass-legume hay
• grass-legume pasture
• red clover
• fallow

Group 2 crops:

• barley
• buckwheat
• canola
• corn
• edible beans
• flax
• grass hay
• grass pasture
• millet
• mustard

Group 2 crops continued:

• oats
• potatoes
• rye
• sorghum-sudan
• sugarbeets
• sunflowers
• sweet corn
• triticale
• vegetables
• wheat

Table 5.

Phosphate recommendations in pounds per acres (lb/A) for irrigated potato production by yield goal and soil test P level (STP)¹

Yield goal2	STP: 0-5 ppm Bray-P1, 0-3 ppm Olsen-P	STP: 6-10 ppm Bray-P1, 4-7 ppm Olsen-P	STP: 11-15 ppm Bray-P1, 8-11 ppm Olsen-P	STP: 16-20 ppm Bray-P1, 12-15 ppm Olsen-P	STP: 21-25 ppm Bray-P1, 16-18 ppm Olsen-P	STP: 26-30 ppm Bray-P1, 19-22 ppm Olsen-P	STP: 31-50 ppm Bray-P1, 23-41 ppm Olsen-P	STP: 51+ ppm Bray-P1, 42+ ppm Olsen-P
less than 200 cwt/A	75 lb/A3	50 lb/A3	25 lb/A3	—	—	—	—	—
200-299 cwt/A	100 lb/A3	75 lb/A3	50 lb/A3	25 lb/A3	—	—	—	—
300-399 cwt/A	125 lb/A3	100 lb/A)3	75 lb/A3	50 lb/A3	50 lb/A3	50 lb/A3	50 lb/A3	50 lb/A3
400-499 cwt/A	150 lb/A3	125 lb/A3	100 lb/A3	75 lb/A3	75 lb/A3	75 lb/A3	75 lb/A3	75 lb/A3
500 cwt/A or more	175 lb/A3	150 lb/A3	125 lb/A3	100 lb/A3	100 lb/A3	100 lb/A3	100 lb/A3	75 lb/A3

Table 6.

Potash recommendations in pounds per acre (lb/A) for irrigated potato production by yield goal and soil test K level (STK).

Yield goal	STK: 0-40 ppm	STK: 41-80 ppm	STK: 81-120 ppm	STK: 121-160 ppm	STK: 161-200 ppm	STK: 201+ ppm
less than 200 cwt/A	150 lb/A1	75 lb/A1	50 lb/A1	25 lb/A1	—	—
200-299 cwt/A	200 lb/A1	100 lb/A1	75 lb/A1	50 lb/A1	25 lb/A1	20 lb/A1
300-399 cwt/A	300 lb/A1	200 lb/A1	100 lb/A1	75 lb/A1	50 lb/A1	25 lb/A1
400-499 cwt/A	400 lb/A1	300 lb/A1	200 lb/A1	100 lb/A1	75 lb/A1	50 lb/A1
500 cwt/A or more	500 lb/A1	400 lb/A1	300 lb/A1	200 lb/A1	100 lb/A1	75 lb/A1

Calcium, magnesium, and sulfur

Potato production on acid sandy soils low in organic matter may require addition of one or more of the secondary nutrients (Ca, Mg, and S) for optimum tuber yield and quality. However, keep in mind that groundwater and irrigation can contain substantial amounds of Ca, Mg and S and may be able to supply all or part of the requirements of these nutrients, depending on irrigation amounts used. Groundwater concentrations of Ca, Mg and S in Sherburne County in a recent study were 55.8,21.3 and 5.3 ppm, respectively.

 | 

Table 7. Calcium recommendations for irrigated potato production

Calcium soil test	Relative level	Calcium to apply
0-150 ppm	low	200 lb/A
151-299 ppm	medium	100 lb/A
300+ ppm	high	0 lb/A

Table 8.

Magnesium recommendations for irrigated potato production

Magnesium soil test	Relative level	Magnesium to apply: Broadcast	Magnesium to apply: Row
0-49 ppm	low	100 lb/A	20 lb/A
50-99 ppm	medium	50 lb/A	10 lb/A
100+ ppm	high	0 lb/A	0 lb/A

Table 9.

Sulfur recommendations for irrigated potato production

Sulfur soil test	Relative level	Sulfur to apply: Broadcast	Sulfur to apply: Row
0-6 ppm	low	20-30 lb/A	10-15 lb/A
7-12 ppm	medium	trial only	trial only
12.1+ ppm	high	0 lb/A	0 lb/A

Table 10. Boron recommendations for irrigated potato production.

Boron soil test	Relative level	Boron to apply
0. 0-0.4 ppm	low	1 lb/A broadcast 0.5 lb/A banded
0.5-0.9 ppm	medium	0 lb/A
1.0+ ppm	high	0 lb/A

Table 11. Zinc recommendations for irrigated potato production

Zinc soil test	Relative level	Zinc to apply: Broadcast	Zinc to apply: Row
0.0-0.5 ppm	low	10 lb/A	2 lb/A
0.6-1.0 ppm	medium	5 lb/A	1 lb/A
1. 1+ ppm	high	0 lb/A	0 lb/A

Carl J. Rosen, Department Head, Soil, Water and Climate

Reviewed in
2021

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OMU Potato – Buisky Fertilizers

	Features: Characteristics: Potato 3 kg, length 380 mm, width 55 mm, height 220 mm Potato 5 kg, length 400 mm, width 65 mm, height 340 mm Note: The appearance of the product may differ from that shown in the photographs, which in no way impairs its characteristics, properties and quality. Delivery terms
5064 4607019650262 NK5064 Buyskiye WMD “Potato”, 3 kg Retail 257 ₽ 1 0 ₽ Discount 1 231 ₽ 54 13 725 ₽ Discount 2 213 ₽ 209 53 614 ₽ Discount 3 195 ₽ 364 93 502 ₽ Joint purchase Join the Buy Now with Free Shipping Moscow Retail 257 ₽ In stock Go to cart 5065 4607019650415 NK5065 Buyskiye WMD “Potato”, 5 kg Retail 402 ₽ 1 0 ₽ Discount 1 373 ₽ 40 15 913 ₽ Discount 2 354 ₽ 154 61 639 ₽ Discount 3 335 ₽ 268 107 365 ₽ Joint purchase Join the Buy Now with Free Shipping Moscow Retail 402 ₽ In stock Go to cart The minimum purchase amount is 2,000 ₽. Discount system. If you find a similar product cheaper, we will make an additional discount.

Description

Organo-mineral fertilizer “Potato” was developed taking into account the real needs of potatoes in nutrients and the characteristics of growing this crop. The basis of this fat is peat, which fixes nitrogen in the exchange form and does not allow it to be washed out of the soil, and makes phosphorus easily digestible for plants. Thus, it is possible to avoid excessive consumption of fertilizers and excessive clogging of the soil. This fertilizer contains nitrogen 10%, phosphorus 6%, potassium 16%, magnesium 6%. It is used for the main application for potatoes and other vegetables 100 g / m2, as well as for application directly into the hole before planting at the rate of 20 g / hole. Before hilling, fertilizer is applied at a rate of 20-30 g/m linear. OMU “Potato” is permissible to apply only in dry form.
OMU “Potato” due to the presence of magnesium in the composition prevents the darkening of tubers, wet rot, bacterial diseases. The complex of nutrients increases productivity, improves the taste of products, keeping quality. Does not contain chlorine.

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OMU Potato

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Fertik, water-soluble fertilizers

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instructions for use and purpose of feeding. Composition and dosage for plants. How to apply?

Key Features:

• Name Synonyms : Organo-Mineral Fertilizer for Potatoes
• General characteristics : organo-mineral potato fertilizer with potassium magnesia
• Type (filter) : organomineral complex
• Universal : no
• Special : yes
• Form : dark gray granules, diameter: 1-5 mm
• Safety : fertilizer absolutely safe for plants
• Safe (filter) : yes
• Composition : contains 40% organic matter, nitrogen, phosphorus, potassium, magnesium and trace elements, humic compounds.
• Nitrogen (total nitrogen) N : 6%

View all features of

Potato is perhaps the most popular root crop, which is grown not only on an industrial scale, but also on individual plots. In order for the vegetable harvest to be rich, one should not only correctly plant the fruits, but also take good care of the planting. The most important stage of agricultural technology is fertilizers. OMU Potato is a very popular top dressing, which is increasingly chosen by farmers and gardeners. It is easy to use, accelerates the growth of fruits, has a positive effect on their quality and the overall immunity of the plant.

General description

WMD Potato is produced by the domestic trade mark Buisky Fertilizers, it is this brand that owns a whole line of WMD. This complex organomineral top dressing has a special purpose – for potatoes. A balanced composition and absolute safety distinguish this drug on the agricultural market. The safety class is indicated as the highest possible, that is, the product does not pose a danger to plants.

The composition of the drug deserves special attention, a little less than half is organic. Also among the components are useful substances:

• humic type compounds;
• potassium;
• magnesium;
• phosphorus;
• nitrogen;
• boron;
• copper;
• iron;
• manganese;
• zinc; sulfur.

Thus, the entire set of macro- and micro-substances necessary for the qualitative development of potatoes is present in this preparation. The action of this remedy is defined as prolonged, that is, it is not momentary, but continues over time.

Top dressing is granules, which are made on the basis of peat substances with the addition of humates, nutrients. The organomineral type of fertilizer is good because it combines both organic and mineral substances. This complex composition allows root crops to absorb useful elements more actively and more fully, grow healthy and strong.

Feeding has a number of advantages, its benefits are as follows:

• the composition is carefully selected specifically for potato crops and is well developed;
• budget price, allowing the use of top dressing on large areas;
• does not contain chlorine, which is very harmful to potatoes and negatively affects their taste;
• no toxic substances in the composition;
• a significant proportion of potassium, which has a positive effect on the growth dynamics of root crops, in addition, it has a good effect on the future keeping quality of fruits, commercial qualities, increases the shelf life;
• is suitable for regular use, without harm or accumulation of harmful elements;
• Magnesium in the fertilizer is enough to improve the metabolism inside root crops;
• reduced risk of fungal infections, especially sea rot;
• contains not only a diverse complex of useful elements, but also a significant amount of them, so the yield increases, immunity improves;
• easy to use, the method of application is very simple, does not require special training, can be injected when planting in the hole.

As for the minuses, no significant negative properties of the Potato WMD have been identified so far. If you use the product according to the instructions, then it can not harm either plants or humans.

For which crops is it used?

Despite the fact that this drug is positioned as a special drug and the name indicates the plant for which it is released, another direction of use is allowed. In addition to all varieties of potatoes, this tool has proven itself well when growing other types of root crops. In general, it is produced in the group of fertilizers for vegetable garden plants. Can be used for berry and fruit crops.

Effects on plants

The purpose of the fertilizer is diverse, many goals can be achieved when growing root crops:

improves the taste and texture of potatoes;

complete nutrition of the plant;

soils of depleted and poor type are saturated with useful substances, including sulfur, magnesium, potassium;

The structure of the soil is significantly improved, the soil is permeable to oxygen and water permeability is increased.

Types and forms of release

The release form of this drug is granulated. The size of the granules is insignificant, varying from 1 to 5 mm. The surface of the granules is enriched with special bacteria taken from the soil. The granules are packaged and sold in different packaging. You can purchase 3, 5 or 10 kg of the drug.

Instructions for use

It is recommended to use the fertilizer immediately during the planting of potatoes, that is, no separate time is required for this. The process is as follows:

• a hole is formed with a garden tool or special equipment;
• feeding granules are introduced into each well, the amount of the substance per well is from 15 to 20 g;
• then a tuber is inserted into the hole and covered with soil so that a minimal mound forms on top.

The ability to introduce top dressing during planting is an indisputable advantage of this preparation. You can do this even at the stage of digging, in which case you need to enter 100 g of the composition per square of planting. To make it easier to measure the top dressing, you can use a spoon or measuring cup:

• 11 g of the substance is placed in a tablespoon;
• in an ordinary glass – about 120 g. For 5 kg of top dressing, 900 g of potassium magnesia.

  Key features

  Name synonyms

  Organo-Mineral Fertilizer for Potatoes

  Brand (filter)

  Buoy Fertilizers

  Series

  OMU

  general characteristics

  organo-mineral potato fertilizer with potassium magnesia

  Type (filter)

  organomineral complex

  Universal

  no

  Special

  yes

  The form

  dark gray granules, diameter: 1-5 mm

  Safety

  fertilizer absolutely safe for plants

  Safe (filter)

  yes

  Composition

  Compound

  contains 40% organic matter, nitrogen, phosphorus, potassium, magnesium and trace elements, humic compounds.

  Nitrogen (total nitrogen) N

  6%

  Phosphorus oxide (P2O5)

  8%

  Potassium oxide (K2O)

  9%

  Magnesium oxide (MgO)

  2%

  Bor (V)

  0. 025%

  Copper (Cu)

  0.01%

  Iron (Fe)

  0.06%

  Manganese (Mn)

  0.1%

  Zinc (Zn)

  0. 01%

  Sulfur (S)

  6.2%

  organic matter

  40%

  Humic substances

  10.5%

  For which crops is it intended

  For which crops

  for potatoes and other root crops, for fruit and berry crops

  For which plant groups (filter)

  vegetable crops

  For garden

  yes

  For the garden

  yes

  Vegetables (filter)

  potatoes

  Purpose

  Purpose

  increases the yield and quality of the products obtained, improves the keeping quality of fruits

  Impact on the soil

  intensively nourishes poor and depleted soils with potassium, magnesium, sulfur; improves soil structure – looseness and water permeability

  Impact on soil (filter)

  improves the condition of the soil

  How to use

  Mode of application

  root dressing, incorporation

  Classification by application

  basic (digging with soil in spring or autumn), when planting, top dressing (applying during the growing season)

  Application place

  open ground, greenhouse

  soil type

  all soil types

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  instructions for use, composition, reviews

  Contents

  • 1 Characteristics of fertilizer
  • 2 Varieties of Fertik
  • 3 Fertilizer composition Fertik for potatoes
  • 4 Advantages and disadvantages
  • 5 Dosage and methods of introduction
  • 6 Instructions for the use of fertilizers of the FERIC
    • 6. 1 when landing
    • 6.2 at the growth stage
    • 6.3 Autumn
    • 6.4 spring
    • 7 Complexity 900 9 Conclusion
    • 10 Reviews

    Fertilizer for potatoes Fertik is considered a complex mineral fertilizer for crops, which perfectly saturates the soil and enriches it with various useful substances. Many gardeners use it as an alternative to organics. It is easy to use this top dressing, it does not take up much space, it is perfectly stored, non-toxic, it is presented in stores in convenient packaging.

    Fertik comes in different types, when growing tubers choose the option marked “For potatoes”

    Fertilizer characteristics

    Fertik preparation is not new on the market. Previously, it was released under the name Kemira. The composition of the mixture, in contrast to the name of the product, has not been changed. You can use the tool on personal plots, farms and country gardens. In addition to the fact that it improves productivity well, many note that improvements after its use are also noticeable in product quality. In vegetables, the content of toxic substances and nitrates is reduced.

    Fertilizer is beneficial to use, its consumption and costs are less than traditional top dressings. The product is produced in different forms, but for potatoes, granules are more often used, which look like a powder mixture. A feature of the incorporation of the preparation is that the work is carried out in moist ground. If the weather is hot and dry, in order for the composition to dissolve, it will be necessary to carry out additional watering of the site.

    Raw materials for the production of Fertika are supplied by Yara

    Varieties of Fertiki

    The drug has a beneficial effect on most plant species. It is divided – according to the method of application, seasonality and purpose. Each culture has its own category. There are compositions not only for potatoes, but also for the lawn, flowers, indoor, garden, coniferous plants.

    Warning! To achieve the desired effect, Fertik should be used as directed.

    The company provides the following varieties of the drug:

    1. Granulated. A very easy-to-use fertilizer that does not require special preparation. The composition should simply be scattered over the surface of the soil in accordance with the instructions or embedded in the soil, and then water the beds. A feature of granulated Fertiki is a prolonged action.
    2. Liquid. In particular, it is used to fertilize indoor plants and flowers. Before use, the drug is recommended to be diluted in water.
    3. Water soluble. A fertilizer in which useful elements are in a chelated form. It has maximum biological activity and is best absorbed by plant organisms. The composition is a powder, which is diluted with water before use. This fertilizer is usually carried out foliar top dressing.
    4. Organo-mineral. A special form of the drug, in which mineral supplements are combined with humic acids. Such a Fertik is useful not only for plants, but also for the soil. It makes it looser, helps to retain and adsorb moisture.

    Potato farm is presented in granular form

    Fertilizer composition Potato farm

    Every vegetable grower knows that it is impossible to get a rich vegetable crop without the use of fertilizers. There is no ideal soil, and the fertile soil on which vegetables are grown annually is depleted over time. Since the potato root system is underdeveloped, if the plantings are not fed in time, the harvest will be poor, the bushes will wither and may even die. It is most effective to add fertilizers to the soil in a complex manner, and Fertik’s preparation is excellent for this. It contains in its composition a complete set of macro- and microelements necessary for the tuber, namely:

    • calcium;
    • iron;
    • nitrogen;
    • magnesium;
    • honey;
    • sulfur;
    • molybdenum;
    • zinc;
    • manganese;
    • Bor.

    Attention! A huge plus of the drug is that it does not contain chlorine.

    Advantages and disadvantages

    Vegetable growers often use Fertik’s fertilizer for potatoes in practice. Judging by the numerous reviews, it has many advantages.

    Potato farm saturates the crop with useful substances, stimulates growth and development, strengthens the immune system

    Advantages:

    • high efficiency;
    • ease of use;
    • balanced composition;
    • wide range;
    • convenient packaging;
    • availability of all necessary elements;
    • no chlorine;
    • safety for people and plants.

    Disadvantages:

    • overpriced;
    • high consumption.

    Dosage and application methods

    The composition of Fertik’s fertilizer “For potatoes” is selected in such a way that it fully meets the requirements of the crop. The tool helps to improve the formation of tubers, increases productivity and its long-term storage without loss of taste. As a result of top dressing, potatoes grow rapidly, ripen more actively, and become more resistant to various diseases. The formula of the drug P:N:K is 9:11:16.

    The fertilizer is placed on the market packaged in bags with a mass of substance 1; 2.5; 5; ten; 25 kg. It is allowed to be used from April to July, when preparing the soil, planting potatoes and during the growing season of the crop.

    The granules of the drug are evenly distributed over the surface of the soil and the area is dug up onto the bayonet of a shovel. Calculate the consumption based on the formula 60 g of substance per square meter of land.

    Instructions for use Fertik fertilizer

    The preparation has simple instructions for use, but before using it, be sure to read it. Depending on the period of its use, the methods of application may differ.

    Warning! Mineral fertilizers can harm potatoes, so when working with Fertika, you must strictly follow the dosage so as not to overfeed the plants.

    When cultivating the soil with this preparation, there is no need to use other means

    When planting

    At the stage of planting, Fertik’s fertilizer is applied into holes dug in advance at a distance of 40 cm from each other. It is recommended to pour 15 g of the drug into one hole, then mix it with the ground, and then lay out the sprouted tuber. This should be done to avoid direct direct contact of the substance with the culture.

    Tip! According to experienced gardeners, it is best to fertilize potatoes before planting or immediately at the time of planting.

    At the stage of growth

    You can once again feed the potatoes with Fertika during the hilling of the beds. To do this, 30 g of granules must be distributed around each sprout, and then carry out the procedure. Hilling the crop should be done twice per season: first, when the plantings grow to 10 cm in height, then until the rows close.

    In the autumn

    Many gardeners fertilize the soil with Fertika before the arrival of frost. This is especially true on poor soils, as well as in regions with little snowy winters. At the time of work, they try to evenly distribute the drug throughout the site and then dig up the ground. The consumption of funds is calculated at 50 g per 1 sq. m. Depending on climatic conditions, in autumn, work can be performed from the second half of August to November.

    In spring

    In early spring, before planting potatoes, Fertiki granules are applied to the soil at the rate of 80 g per square meter of plot. Next, the earth is dug up, while freeing the beds from weeds and debris.

    Compatibility with other preparations

    The acidity of Fertik’s potato fertilizer is practically neutral. Because of this feature, it can be used with most other dressings, as well as pesticides and stimulants.

    Precautions

    According to the manufacturer of Fertiki, the drug can not harm either humans or the environment. But, according to experienced farmers, when using it, the rules of elementary security measures should not be neglected. Top dressing is applied under the root, so there is no need for a protective suit, goggles and a respirator, but it is still advisable to wear gloves.

    Important! If an allergic reaction occurs when a substance gets on unprotected skin, you should drink an antihistamine, and if you feel worse, consult a doctor.

    For the preparation of Fertika’s solution, it is not recommended to use food utensils

    Conclusion

    Fertik’s potato fertilizer will be an excellent helper for gardeners who do not have the opportunity to feed the soil with organic compounds. It is very easy to use, gives excellent results, significantly increases crop yields. There are many varieties of Fertiki, if it is properly selected and used according to the instructions, the results of the application will only please.

    Reviews

    Igor Tolmachev, Engels

    I have been using Fertik fertilizer for the second year. I use for potatoes and lawn. The results are very pleasing. A huge plus in the convenient packaging of the product and ease of use. I noticed that after the start of using the product, the potatoes began to be stored longer.

    Ibragimova Elena, Ufa

    I consider Fertiku the best fertilizer for potatoes. Thanks to this product, the harvest becomes several times better. The only drawback is, in my opinion, the overpriced.

    Sinelnikova Tatyana, Penza

    Fertik is an excellent fertilizer, which has become a godsend for me. On the advice of a neighbor in the country, I completely replaced manure with this tool and I have absolutely no regrets. No need to mess with it, even the solution is easy to prepare, there is nowhere easier to apply. The consumption is quite economical. Now the need to bring organics to the site by machines has completely disappeared.

    Fertilizer potato formula in Novosibirsk: 171 products: free shipping, 24% discount [link]

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