Fertilizer Management in Potatoes: Organic, Compost Manure, NPK, and Schedule

Potatoes are heavy feeders and require ample fertilizer for optimum yields. Nutrition applications for Potatoes will help you obtain optimum crop efficiency and maximize the yield and high quality of all Potato crops. Potato vegetation typically require massive quantities of vitamins to provide acceptable yields. Seed Potatoes present deep, unfastened, acidic soil with a pH of 4.8 to six.5 and add quite a lot of potassium and nitrogen, serving to them get off to a robust begin. Let’s try extra details about fertilizer administration in Potatoes.

Fertilizer Management in Potatoes
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The quantity of fertilizer utility is determined by the soil check outcomes. Potato progress and worthwhile manufacturing depend upon many administration components, considered one of which is to make sure an sufficient provide of vitamins. Fourteen parts or vitamins derived from the soil are important for plant progress. Fertilizer utility turns into crucial when the provision of vitamins from the soil shouldn’t be sufficient to satisfy the event necessities. Therefore, a nutrient administration program is crucial to take care of a wholesome Potato crop, enhance tuber manufacturing, and scale back opposed results on the setting. 

Fertilizer administration in Potatoes

Types of fertilizer for rising Potatoes

Potato is a really intensive crop and wants a a lot greater charge of vitamins because of greater dry matter manufacturing per unit space. However, as a result of most of our soil is poor in obtainable vitamins and the crop’s root system is shallow and sparse, nutrient demand is often not met by soil. That is why the crop responds nicely to exterior sources of vitamins. Therefore, the dietary necessities of the Potato crop are very excessive, and using fertilizers and natural fertilizers is taken into account important for reaching financial and greater yields.

The use of inexperienced manure is useful in mild soils and in areas the place natural manure shouldn’t be available. However, the utmost dose of fertilizer utility varies drastically relying on soil sort, soil fertility, local weather, crop rotation, sort, size of the rising season, and moisture provide. 

Choosing the kind of fertilizer to develop your Potatoes is a matter of non-public desire. There are many alternative methods to assist your Potatoes develop; you’ll be able to select the natural route or customary chemical fertilizers. Whichever methodology you select to fertilize your crop (and you’ll need so as to add some fertilizer to develop a great Potato crop), that you must determine whether or not you’ll use your fertilizer in the standard method.

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Potato Farming
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Organic fertilizers 

Organic growers use a wide range of fertilizers throughout the rising season after planting seed Potatoes. Using a cotton meal, bone meal, and inexperienced sand will increase soil acidity and gives nitrogen, potassium, and phosphorus. In mixture, kelp detects small quantities of minerals in meals. When the soil is ready for many vegetable crops, the fertilizer is added to the soil. When the soil is prepared from above, the fertilizer settles on high of the soil.

In trade for rising cowl crops, many natural gardeners apply soil fertilizer and well-decomposed manure, reminiscent of hen manure. Manure helps the soil retain moisture, and well-decomposed manure helps decrease soil pH and enhance vitamins. Compost and manure may be blended with bone meal, greensand, and kelp to finish the fertilizer program earlier than planting. After planting and digging the furrows, the manure combination is added to the soil. 

Compost manure 

Manure is a wonderful modification to the soil the place Potatoes will likely be grown except the manure is recent. For use in the vegetation with out the chance of burning younger vegetation, the fertilizer should both be allowed to get well in the winter or spend sufficient time in the compost heap, the place it may be heated to temperatures between 57 and 71°C. Heat to medium warmth.

Either of those strategies can kill probably dangerous micro organism and pathogens which will include recent manure and scale back the depth of the manure to some extent. However, well-digested Farmyard Manure (FYM), animal manure, and waste manure are heavy and present small quantities of plant vitamins used as main natural manure. They often apply 15-30 tonnes/hectare, relying on availability.

In addition to the important vitamins, this natural matter is wealthy in secondary and micronutrients, which considerably enhance crop yields, soil fertility, and bodily situation. Soil bodily situation is improved by water infiltration, water storage capability, aeration, permeability, soil aggregation, root depth, discount of soil crusting, bulk density, runoff, and erosion.

Fertilizing ideas for higher outcomes 

  • The position of natural manure is nicely established, and 15-30 tons per hectare of well-digested farmyard manure, leaf mildew, or compost provides higher outcomes relying on the natural matter content material of the soil. 
  • Using 3 to five quintal/hectare of well-powdered neem-cake helps management the pests and gives vitamins to the vegetation. These fertilizer doses ought to be supplemented with the required quantity of fertilizer. In addition to the important vitamins, the crop additionally wants micronutrients that should be utilized because the soil is dropping them rapidly.
  • P utility improves the variety of tubers, improves the dimensions, helps in quicker bulking, accelerates maturation, and counteracts the dangerous results of extreme N. 
  • Potassium is a normal aspect and enhances dry matter, starch content material, and higher cooking high quality. It improves tuber manufacturing by rising their dimension and helps in the environment friendly use of N. Potassium gives resistance to water stress and illness. 
  • Sulfur is one other nutrient acknowledged because the fourth largest plant nutrient after nitrogen, phosphorus, and potassium. The use of sulfur has been a wonderful response to Potato manufacturing. But due to variations in location, soil varieties, obtainable sulfur standing, sulfur sources, genotypes, progress situations, and crop administration ranges, these reactions have been discovered to fluctuate broadly. 

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Potato Farm
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Slow-release vs quick-release fertilizer for Potatoes

The sluggish or fast launch choice relies upon solely in your desire and expectation of outcomes. Immediate launch choices often come in a water-soluble type that delivers vitamins instantly upon utility. It may result in speedy enchancment, particularly if the tubers or seedlings are in much less fascinating soil. 

Highly concentrated, slow-release choices provide vegetation a steady, constant provide of vitamins over an extended interval. Instead of drowning your vegetation in massive quantities of vitamins directly, this will have a devastating impact. No watering is required for activation and is much less prone to attain close by surfaces or groundwater. 

NPK fertilizer

Nitrogen (N) – N is the aspect that always restricts Potato progress. Nitrogen fertilizer is important to make sure worthwhile Potato manufacturing. Both charge and time can considerably influence manufacturing and high quality. Proper administration of N is without doubt one of the most important components required to attain a excessive yield of the very best quality Potatoes. Adequate early season N provide is crucial for plant progress. Its use is important for profitable Potato manufacturing. An acceptable quantity of nitrogen will increase the variety of roots and shoots and the dimensions of tubes.

Phosphorus (P) – Phosphorus is crucial in the early progress of crops, rising tuber set, and selling tuber maturity. In addition, phosphorus is important to develop roots and shoots, offering power for plant processes reminiscent of ion uptake and transport. Roots take in phosphate ions solely when they’re dissolved in soil water. Phosphorus deficiency may also happen in soils the place P is plentiful if drought, low temperature, or illness intrude with the unfold of P via soil resolution to the foundation.

These deficiencies will end result in root improvement and inadequate work. Phosphorus improves yield with its constructive impact on the variety of tubers and the dimensions of Potato tubers. On common, some P fertilizer is required to achieve most Potato manufacturing in sandy soils. Therefore, it is suggested that research be performed regionally to find out the response of Potatoes to P fertilizer. 

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Growing Potatoes
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Potassium (Ok) – Potatoes include a big quantity of Ok, and these vitamins play an important position in the manufacturing and high quality of tubers. Soil exams are very helpful in predicting soil response to Ok. Both broadcast and banded functions can be utilized on low Ok testing soils, which require excessive charges of Ok fertilizer utility. In addition, potato vegetation take in massive quantities of potassium throughout the rising season. 

Potassium performs an important position in controlling the water standing of vegetation and the inner ion focus of plant tissues, with specific emphasis on stomatal operate. Potassium is important for top yields. This macronutrient determines the environment friendly transport of different important vitamins and carbohydrates from the leaves to the tuber. Potassium additionally reduces the presence of inside darkening throughout progress. 

The dietary necessities of the Potato crop are very excessive, and using fertilizers and natural manures is taken into account important for reaching financial and greater yields. The use of inexperienced manure is useful in mild soils and in areas the place natural manure shouldn’t be available. The most dose of fertilizer utility varies drastically relying on soil sort, soil fertility, local weather, crop rotation, sort, size of the rising season, and moisture provide.

Fertilizer utility of 180-240 kg N, 60-90 kg P2O5, and 85-130 K2O per hectare is beneficial for alluvial soil. It is beneficial to use 100-150 kg N, 100-150 kg P2O5, and 50-100 kg K2 O per hectare in mountainous areas. Approximately 120-150 kg N, 50 kg P2O5, and K2 O are beneficial in plateau black soils. 120 kg N, 115 kg P2 O5, and 120 K2O kg per hectare are beneficial for Potato manufacturing in acidic soils. Two-thirds of N and whole-food of P and Ok are given on the cultivation time.

Balance N is given throughout the earthing-up operation. Then, fertilizer is utilized by banding at a distance of 5 cm from the tubers. The finest fertilizers for Potatoes are the ammonium nitrate and ammonium sulfate, adopted by calcium ammonium nitrate, ammonium chloride, and urea. 

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Harvesting Potatoes
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Fertilizer requirement (kg / acre) 

Calcium (Ca), Magnesium (Mg), and Sulfur (S) – Most soils include enough quantities of secondary vitamins for Potato crop manufacturing. However, acidic soils are low in natural matter and might require including a number of of those vitamins. As a supply of lime for acidic soils, Dolomitic lime will present each calcium and magnesium.

Urea SSP Muriate of Potash
165 155 40 

Macronutrient uptake in Potatoes 

The quantity of vitamins in Potatoes varies with the stage of crop progress. Macronutrients are in excessive demand throughout early spring progress; vegetation have to have sufficient vitamins when wanted. Both potassium and nitrogen are required throughout Potato plant progress and tuber formation. Potassium is probably the most generally used nutrient in Potato crops and is required in massive portions with nitrogen to attain excessive crop yields. 


If your Potato vegetation flip mild inexperienced or yellow whereas the leaf veins stay inexperienced, or in the event that they develop into scorched, the soil could also be poor in vitamins. The frequent deficiencies when rising Potatoes are magnesium and sulfur. Iron and manganese, each micronutrients, are additionally important for Potatoes. The first step in overcoming these deficiencies is to check the soil or check it your self with a soil check to search out out which vitamins or micronutrients are inflicting the issue.

Once the deficiency is recognized, you’ll be able to apply the suitable fertilizer to repair it. But, once more, a balanced crop vitamin technique is crucial. Although tiny quantities are required, the precise stability of micronutrients should be added as these are important parts in reaching excessive yields. The most important micronutrients in Potatoes are boron, copper, manganese, and zinc. 

Potato fertilizer utility strategies 

The fertilizer utility methodology can primarily have an effect on the variety of vitamins required to achieve the crop all through the season. Broadcast utilized phosphorus (P) may be an ineffective methodology of phosphorous fertilization for Potatoes as it’s extremely energetic in the soil and shouldn’t be typically beneficial.

However, nitrate-nitrogen may be both transmitted or turned off at planting. Since it’s comparatively energetic in the soil relying on the season, both methodology can present equal availability to the crop and plant roots. (Although no method will have an effect on it. It is prone to be misplaced in a moist spring earlier than the crop can use it). 

Possible methods to use fertilizer to Potatoes

  1. Spread all of the fertilizer earlier than planting.
  2. Banding all of the fertilizer to the planter. 
  3. Before planting, apply a cut up utility with all potash and some nitrogen broadcast. The remainder of the nitrogen and all phosphorus is tied to the planter. 
  4. A cut up utility with all phosphorus and some nitrogen with planter plus residual nitrogen and all potash broadcast earlier than planting or after plant emergence, earlier than preliminary therapeutic operation. 

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Potato Harvest
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Frequently requested questions on fertilizing Potatoes (FAQ)

Can you over fertilizer to Potatoes? 

In addition to the various inexperienced foliages, the over-fertilized Potatoes might have leaves that develop into spoiled or roll up beneath stress as a result of they’ve put all their sources into making the leaves on the expense of the roots. 

Why are my Potatoes so tall? 

When an excessive amount of fertilizer (particularly nitrogen) is given, the Potato vegetation will develop taller. Overgrown Potato vegetation can develop taller because of over-feeding (primarily in the event you use a excessive nitrogen fertilizer). It will promote quite a lot of wholesome inexperienced progress above floor.

Is Epsom Salt Good for Potatoes? 

Yes, including Epsom salt to Potato vegetation helps crop yield. It gives a great supply of magnesium to vegetation, which is useful in stimulating biochemical reactions. It additionally helps construct robust cell partitions and helps plant progress. 

Do Potatoes like manure? 

As lengthy because the Potatoes develop in virtually any soil, they’ll do higher if the soil is blended with decomposed natural matter reminiscent of farmyard manure and it’s unfastened/nice.

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