What is the Advantage and Disadvantage of npk 15-15-15 compound fertilizer

NPK Compound Fertilizer

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The letters "NPK" on a fertilizer label stand for nitrogen, phosphorus, and potassium, the three primary nutrients plants need to grow. The numbers on the label indicate the ratio (by percentage) of nitrogen, phosphorus, and potassium in the fertilizer container.

Even if you do not see the letters N-P-K, but you see a set of three numbers, for example, 5-10-5, you can correctly assume it stands for 5% nitrogen, 10% phosphorus, and 5% potassium, always in that order. This fertilizer contains 20% nutrients; the remaining 80% is minor nutrients or fillers. Plants need about 16 nutrients; some they get from the air and water, and others are nutrients like iron, calcium, and chlorine from soil.

How Ratios Work vs. Fertilizer Quantities

A smaller quantity of fertilizer with higher ratios can be the same as a larger quantity with lower numbers. For example, a five-pound bag of 10-20-10 fertilizer has the same nutritional value as 10 pounds of 5-10-5 fertilizer.

What Do the Ingredients in NPK Do?

Here's a brief look at what each nutrient contributes to plant growth.

Nitrogen

Nitrogen, the first number referenced in an NPK sequence, plays a key role in a plant's coloring and chlorophyll production, making it an important factor in leaf development. Fertilizers high in nitrogen are often used for grass or other plants where green foliage growth is more important than flowering. At the opposite end of the spectrum, gardeners sometimes encounter the problem of nitrogen depletion—the yellowing of typically green plants often indicates a nitrogen deficiency.

Phosphorus

The middle number in an NPK series refers to the percentage of phosphorous in the fertilizer product. Phosphorus plays a key role in the growth of roots, blooming, and fruiting, which is why it is an essential nutrient for your plants in spring. Phosphorus contributes to many fundamental plant processes, such as rooting and seed formation.

Potassium

The final number in the major ingredients listing gives the percentage of potassium in the product. Potassium contributes to the overall health and vigor of plants. It is known to help strengthen plants' ability to resist disease, assist in the movement of water and nutrients in the plant, and can be especially important in areas that experience cold or dry weather.

Other Ingredients

In addition to the major nutrients that are usually noted on the front label, most fertilizers also include additional ingredients that are listed on a side or back label. This may include other nutrients like calcium, magnesium, iron, micronutrients, and even the percentage of organic matter and fillers. Although the minerals and micronutrients are less critical than the major nutrients, a good fertilizer product will include small amounts of other ingredients as well. 

Types of NPK Fertilizers

Balanced Fertilizers

A fertilizer listed as "10-10-10" is considered a balanced or "complete" fertilizer because its nitrogen, phosphorus, and potassium proportions are equal. Meanwhile, a fertilizer labeled "10-0-10" is an "incomplete fertilizer."

Incomplete Fertilizers

An incomplete fertilizer is not necessarily inferior to a complete fertilizer. Identifying the right fertilizer for your needs depends on a variety of circumstances. If your soil already has an excess of one of the three nutrients in NPK, you could be harming some of your plants by adding more of it to the soil—in this case, an incomplete or unbalanced fertilizer may be the right choice.

For this reason, it is important to test your soil before applying fertilizer. Otherwise, whenever you add anything to your soil, the effect (whether positive or negative) is left to chance.

Organic Fertilizers

Organic fertilizer ingredients are soil nutrients from plant, animal, or mineral sources. Products labeled as "organic fertilizers" must specify which nutrients are organic and must be identified as synthetic or natural by percentage. For example, the label might read, "20 percent of nitrogen (6 percent synthetic, 14 percent organic)."

Organic fertilizer sources might include manure, alfalfa meal, kelp, blood and bone meal, fish emulsion, cottonseed, sewage sludge, soft rock phosphate, and green sand.

What Does "Organic" Mean in Fertilizer

Technically speaking, "organic" material is anything that contains carbon atoms. The modern definition of "organic" means it doesn't contain anything synthetic; however, "organic fertilizers" may have natural or synthetic materials, but the percentages of each must be marked. So, if what you want is "non-synthetic fertilizer," read the label carefully for all ingredients before purchasing since the term "organic" does not cover it.

Worthy of note: Organic fertilizers made wholly from natural ingredients often have lower concentrations of the three major nutrients, so you will often need to use larger amounts. The upside is they usually contain many additional nutrients that feed the plant and the soil. It is strongly recommended that if you are only using commercial synthetic fertilizer, supplement it with some type of organic matter, such as compost or manure, for more holistic soil health.

How to Choose the Right Fertilizer

To properly give your plants the nutrients they need, you need to evaluate what they currently have (or will have if doing a new planting). Not all types of plants have the same nutrient requirements, and you can cause ill-wanted effects when applying amendments haphazardly.

Amendments are supplements like fertilizer that you add to the soil to improve its condition; they can fix a number of factors, including nutrition, water permeability, or pH level. Agricultural lime is a type of amendment you use to reduce acidity in the soil, just like sand or grit is an amendment used to increase the porosity of the soil, aiding in drainage.

If you do not choose the right fertilizer, and if your soil pH is already too high or too low, your plants cannot access some nutrients, even if you give them fertilizer. Knowing what's already in your soil is crucial because you can do more harm than good when applying a fertilizer high in nitrogen to an already nitrogen-rich soil. For example, nitrogen feeds foliage at the expense of flowers, which can affect flower production.

Here are the steps for choosing the right fertilizer:

Get your soil tested. Having a soil test done before you start adding amendments will tell you what you actually need. You can do a home test, send a soil sample for testing, or contact your local cooperative extension office for guidance.

Determine what you are planting. Some plants might need more or less of a certain type of nutrient. For example, leafy greens need more nitrogen, while more phosphorus is required for fruiting and flowering. Before you start any gardening or planting project; have a firm understanding of the plant you're growing and its fertilizer needs

Check for fertilizers specially formulated for the plant you're growing. You can find preformulated fertilizers for lawns, trees, bulbs, cactus, houseplants, flowers, fruits and vegetables, acid-loving plants, and much more. Most will match or come close to the nutrient requirements you need, considering your soil is neutral, so adjust accordingly based on your soil analysis.

Read the fertilizer analysis label before buying fertilizer. If you cannot find a fertilizer with the exact N-P-K ratio you need based on your soil test, come as close as possible. Of the three nutrients, it's more important to get the nitrogen correct and not overdo the phosphorus since it can affect water intake.

Determine the form of fertilizer you need. If you are establishing a new lawn, you might consider using a quick-release fertilizer that is sprayed in liquid form. Or, you might try a granulated fertilizer for a slow-release form of food for the plant and its roots over time. Most plant growth and care guides will list nutrient ratios, liquid vs. dry forms, and quick vs. slow-release recommendations.

If not sure, use compost. If you have not had your soil tested and do not understand how well it meets a plant's nutritional needs but still feel the need to feed it, use compost instead of commercial fertilizer or consider using a slow-release fertilizer. Slow release is less likely to harm plants to any great degree.

How to Use Fertilizer

Since every plant has different fertilizer needs, we know that one plant may require more fertilizer while another might require less or none at all. In most cases, a regular fertilizer schedule will keep your plants vigorous. However, too much fertilizer can kill your plant, often burning the foliage and roots if given too much too quickly or applied directly on the foliage.

How do you know how much to use and how often? Follow the guidelines on the fertilizer label combined with the plant's specific care instructions. Also, check your local extension office for recommendations for fertilizer needs in your region; some regions have more acidic soils than others.

For a simple example, we know in the spring a lawn requires nitrogen-rich fertilizer. One pound of nitrogen might be recommended per 1,000 square feet of lawn. If your lawn is 1,000 square feet and your fertilizer contains 20% nitrogen, you should evenly apply 10 pounds of the fertilizer over the entirety of your lawn. In most cases, lawns benefit from fertilizer once a month from April to November, with a pause during the hottest months of July and August; however, this is variable based on how rich the soil already is. That's why soil analysis is important. You never want to over-fertilize, if you can avoid it.

Variables that affect how much and how often you should fertilize:

The type of plant

Slow-release vs. quick-release fertilizer

Mowing practices (lawns)

Watering

Weather and temperatures

Soil texture

Soil pH

Warning

Avoid over-fertilizing your plants, especially lawns. Nutrients that aren't taken up by plants may run off into sewer systems and rivers, leading to serious pollution problems.

How to Apply Fertilizer

It is generally recommended that the best time to apply fertilizer is when the sun is not beating down on the plants. However, applying it before or after rainfall or plant watering depends on the form of fertilizer you use. Different forms of fertilizer are granules, liquid, powder, or spikes.

Granular fertilizer: This dry fertilizer comes in the shape of pellets, typically used for lawns. Most granular fertilizers are slow-release fertilizers, giving off nutrients to grass over a prolonged period. This type of fertilizer uses special fertilizer spreaders as tools—broadcast, drop, or hand-held spreaders. It's best to apply this fertilizer before the rain comes. This slow-release fertilizer uses rainwater as its method of dispersal. On wet grass, the granules might stick to foliage, increasing the risk of burning it.

Liquid, powder, or crystal fertilizer: This form is often sold as a liquid concentrate, dry powder, or crystals that require further dilution with water. Most liquid fertilizers are quick-release solutions, which means nutrients pass to the plant more immediately. Sprayers and hose attachments make spreading this fertilizer an easy task. It's best to spray this fertilizer on already-wet grass to limit "burn" from the chemicals.

Spikes: For a set-and-forget-it approach to fertilizing, spikes are your go-to. Spikes are usually the most expensive type of fertilizer but are easy to use. Spikes are slow-release, leeching nutrients from the spike to the soil over time. Spikes are formulated for trees, shrubs, outdoor plants, and houseplants. Generally, plant the spike in soft, damp soil at the drip line (the point where water falls from the tree or plant down toward the roots).

How to use the roll compactor to maker NPK fertilizer granular/pellet

What is NPK fertilizer

The NPK compound fertilizer refers to a fertilizer variety that contains more than two elements in the three nutrient elements of nitrogen (N), phosphorus (P), and potassium (K) required by crops, or contains a variety of nutrient elements including medium or trace elements, and is mechanically mixed and manufactured. Products made from granulation, drying, screening, etc. According to its physical state, it can be divided into solid compound fertilizer and liquid compound fertilizer. Solid compound fertilizer is divided into powder, granulation (from dry granulation) and bulk blended compound fertilizer.
 

Advantages of granular NPK fertilizer

These granulated pellets are quite good in quality, and have features as follow:

Sufficient strength,

No agglomeration;

Large enough particle size, with few or no dust;

Good liquidity;

Uniform particle size.

When using on the agricultural industry, we get these benefits:

Complete nutrients

High nutrient utilization

Low environmental pollution

Easy for mechanized fertilization and aerial fertilization

According to the chemical properties of the soil and the growth requirements of crops, different nutrient distribution ratios, different particle sizes or when using coating agents can improve the dissolution rate of nutrients in the soil, scientific fertilization, and fertilizer efficiency, thereby improving chemical fertilizers utilization rate, to obtain better agricultural production increase effect.

NPK compound fertilizer can improve the utilization rate of chemical fertilizers and crop yield, which is an inevitable trend of modern chemical fertilizer development.

How to make granular (pellet) fertilizer – 4 ways

Granular compound fertilizer is developed on the basis of powdered compound fertilizer. Granular compound fertilizer is a granular fertilizer that uses chemical or physical methods to process non-granular or powdered materials into the required size, and has a certain mechanical strength and stability. The production process has 4 types: agglomeration granulation, slurry coating granulation, melt coagulation granulation and compacting granulation.

The agglomeration granulation process is to moisturize and increase the temperature of the solid raw material to reach the liquid phase necessary for granulation, and then send it to the granulator (drum, disc) for agglomeration and granulation.

The slurry coating granulation process is to spray the base fertilizer into the granulator in the form of slurry, apply it on the surface of the returned material particles, coat or powder into a ball, and then send it to dry, and then enter the granulator as the returned material The pelletizer is coated with the slurry again, and this is repeated so that the particles are repeatedly coated until they meet the size requirements.

The melt granulation process is to heat the material and use the heat of the chemical reaction of the material to spray the material through the nozzle in the form of an anhydrous liquid. The liquid can be directly condensed into granules in the refrigerant, or it can be coated on the granulator condensed into granules on the particles.

The products of the above 3 kinds of granulation processes have high granule precision and good appearance quality, but chemical reactions and physical changes will occur during production, and the production process is complicated and corrosive.

In addition, the agglomeration granulation and slurry granulation processes can only produce mixed fertilizers. It will take 3 to 10 hours to change product specifications. The raw material requirements are limited. The amount of urea added is <7%, and the effective nutrient recovery rate is 96%. The production process medium material loss> 2%, high energy consumption, high processing cost, large amount of sewage, large environmental pollution, and high construction investment.

The compacting granulation process

The compacting granulation process is a dry granulation process that mixes powdered materials and relies on external pressure to agglomerate the materials. When the material is under high pressure, the particles get close to each other to cause molecular force, electrostatic force, and valence force, so that the molecules are tightly combined and reunited.

Advantage of the compacting granulation process

The technology is mature and reliable, and the granulation equipment is advanced and complete, which can realize automatic control;

The adaptability of the raw materials is strong, the urea addition amount is less than 25%, and the drying and cooling procedures are generally not required. It is especially suitable for heat-sensitive materials. Ammonium bicarbonate can be used as a base fertilizer;

It is easy to change the product scale and add trace elements, and the time to change the product specification only needs 20 to 40 minutes;

Adapt to various production scales, flexible production and operation;

Low energy consumption, high compacting ratio, material loss less than 1%, and low production cost;

There is no high temperature operation in the production process, low corrosiveness, low equipment cost, no sewage discharge, only a small amount of dust, and low environmental pollution;

Are you interested in learning more about npk 15-15-15 compound fertilizer? Contact us today to secure an expert consultation!

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The concentration of compound fertilizer is high, organic fertilizer can be added as needed;

The project investment is low. According to the research of the International Fertilizer Development Center, the investment of the compacting granulation method for the device with an annual output of 120,000 tons of granular compound fertilizer is 20% lower than that of the agglomeration granulation method. 50% of slurry coating granulation. Its construction period is short but economic benefits are good.

The only disadvantage of the compacting granulation process is that its product appearance is not quite good and roundness, but it does not affect its fertilizer efficiency.

The process of compacting granulation

The compacting and granulation process is divided into four sections:

Raw material preparation,

Feeding and compacting,

Granulation,

Grain surface refining (if needed)

The various raw materials are crushed first, then automatic ingredients are weighed according to the requirements of the formula, after that send the mixture to the mixer for uniform mixing.

After being mixed and crushed by the crusher, the material is mixed and smashed into the humidifier for humidification, and then sent to the compactor to force the raw materials to be briquetted into flakes.

The flakes are crushed into granular materials by the granulator, and then sent to the screen machine. The small particles under the screen are returned and compacted again. The pellets on the screen are qualified. Qualified pellets are sent to the wet drum for grinding and spheronization (if needed), and then they are dried and hardened. The dried particles are sent to the vibrating screen, the powder under the sieve is returned to re-granulation, and the qualified particles on the sieve are sent to the cooler, and then sent to the coating film after cooling. Roll coating film wrap, you can get rounded granular compound fertilizer.

What will affect the quality of the granular (pellet)

Mainly there are 3 factors shall affect the quality of the granular

Raw materials: including raw material characteristics, moisture, particle size distribution, plasticity, temperature and hardness.

The operating conditions of the compacting: including the operating pressure, the diameter of the rolls and its circumferential linear speed (specific pressing force), the surface structure of the roller, the operating gap between the rollers, etc.;

 The different materials in the formula may undergo chemical reactions after extrusion granulation, and some may cause the particles to break. Therefore, after the raw materials and products are determined, it is better to take the compacting granulation evaluation test.

A typical application

A typical application of this type of system is a fertilizer system in Guatemala by compacting granulation. The factory chooses this place because the climate there is dry, which reduces moisture problems and provides high-quality calcium carbonate nearby.

The factory is designed as a combination of bulk mixing and compacting granulation. The production starts from the transportation of raw materials from the storage and sends these materials into the bulk mixing system. After bulk mixing, the raw materials are crushed into uniformly sized particles, mixed together with the backflow material and compacting on the compactors. The compactor compact a sheet with a thickness of about 10 mm. After crushing and screening, they get the final finished granular. All products are packaged and sold in polypropylene bags.

This factory has two production lines and runs continuously 24 hours a day. Their raw materials are granular urea, monoammonium phosphate, standard MOP (potash fertilizer), potassium magnesium (K-Mg) powder, boron powder and local calcium carbonate. The grades are 15-15-15, 16 20-0, 20- 20-0 and 18-6-12, particle size is 1,2~4 mm, used in coffee plantations.

It is worth mentioning that the water absorption of the powder after crushing has become a major problem. Urea is used as a raw material because it is the most economical nitrogen fertilizer resource, and it is an ideal binder. It enables the compactor to operate at low pressure, thus extending the service life of the equipment. However, due to its strong water absorption, part of the urea was later replaced by ammonium sulfate, reducing the urea content to 10-15%. The use of ammonium sulfate increased the production speed, modified the physical properties, and weakened the frictional resistance. In addition, it also added an important crop element-sulfur.

Monoammonium phosphate was used because it is a very economical P2O5 resource. MOP is used for potash fertilizer for the same reason. Potassium-magnesium powder and boronate 48 are also used in this factory to produce granular fertilizer. The filler calcium carbonate is produced near this factory and supplied in bulk form.

Regular chemical analysis is carried out to ensure the accuracy of each nutrient content in the formula. Although raw materials with different sizes of particles (large particles, general particles, powders) are used in the ingredients, for each ingredient, in order to obtain a uniform and accurate nutrient content, the continuous blade mixer makes the mixing very effective.

What else we can expect

The compacting granulation process is particularly suitable for processing heat-sensitive materials and does not have a strong requirement on the investment. Especially for material like ammonium bicarbonate, it has strong heat sensitivity and humidity sensitivity, avoids water and heat, is easy to absorb moisture and decompose, and its fertilizer efficiency is only 30%, so it is not suitable for other fertilizer granulation processes.

The main varieties that can be produced by the compacting granulation process include three types: ammonium sulphophosphate, ammonium nitrate phosphate and urea ammonium phosphate. The product variety and production scale can be adjusted at any time according to market supply and demand conditions.

With the further development of granular compound NPK fertilizers, the development direction of granulation technology is to increase the service life and production capacity of granulation equipment, extend the shelf life of granular compound fertilizer products, and reduce the loss of effective nutrients (mainly nitrogen) and energy consumption during the production process.

NPK 15 15 15 Fertilizer, Compound Fertilizer NPK

Compound fertilizer NPK 15-15-15

Compound fertilizer 15-15-15 means that the nitrogen, phosphorus and potassium content of the compound fertilizer is 15 each, and the total content is 45. Nitrogen fertilizer can promote the growth of trees and supplement the nutrition for plant growth; Phosphate fertilizer can promote flower bud formation, flowering and fruit ripening early, potassium fertilizer can make the stem strong.

With high tower granulation, water soluble and fertilizer effect lasting, nutrients in fertilizer npk 15 15 15 play a vital role in plant growth and development and are required in sufficient quantities for healthy and vigorous plant growth. 

Features of NPK 15-15-15 fertilizer:

• Balanced Nutrient Supply: Triple 15 fertilizer provides a balanced supply of the three key nutrients, which is essential for overall plant growth and development.

• Enhanced Root Development: The phosphorus in NPK 15-15-15 promotes root development, leading to stronger and more extensive root systems that can absorb more water and nutrients.

• Improved Flower and Fruit Production: The potassium in NPK 15 15 15 fertilizer helps to improve flower and fruit production, resulting in larger and more abundant yields.

• Increased Chlorophyll Production: The nitrogen in NPK compound fertilizer helps to increase chlorophyll production, leading to greener and healthier plants.

NPK 15 15 15 fertilizer applications:

• Vegetable and Fruit Crops: NPK 15-15-15 is ideal for vegetable and fruit crops that require a balanced supply of nutrients for optimum growth and development.

• Lawn and Turf: NPK complex fertilizer can be used to fertilize lawns and turfs, promoting a healthy and green appearance.

• Ornamental Plants: NPK 15-15-15 fertilizer can be used to fertilize ornamental plants, promoting beautiful and healthy foliage, flowers, and fruit.

• Houseplants: NPK 15-15-15 compound fertilizer is also suitable for houseplants, providing a balanced supply of essential nutrients for optimal growth and health.

Instructions

1. Application method: withdrawal application, hole application, machine application, flushing application, etc.

2. Recommended application amount: 40-60kg/mu of base fertilizer and 15-40kg/mu of topdressing.

3. Applicable plats: for Fruit trees, vegetables, tobacco, tea, seedlings, medicinal materials, beans, sugarcane and other cash crops

Matters needing attention

1. Please increase or decrease the dosage according to the actual situation guided application.

2. It can be used as base fertilizer and topdressing. Pay attention to avoid direct contact with seeds and roots, and isolate fertilizer seeds and seedlings by 5-10cm.

3. This product contains biuret. Improper use will cause damage to crops, biuret ≤ 0.8%.

Compound or Straight Fertiliser – Which is Best?

There are many different types of fertiliser on the market, so how do you know which is the right one for your plants? In our latest blog, we look at the relative merits of the main categories of fertilisers to help you narrow down your choice.

Compound fertiliser

The most commonly used fertilisers are compound fertilisers, which contain a mixture of all the main nutrients plants need. These may be either all-purpose plant feeds or else tailored towards a specific type of plant. For example, a good quality lawn fertiliser will usually contain a carefully balanced mix of different nutrients to provide everything grass needs for healthy growth.

Compound fertilisers are ideal for general feeding purposes and will usually be applied several times through the year to help keep plants healthy and productive.

Straight fertiliser

These contain only one main nutrient, although they may sometimes contain small quantities of other nutrients that help plants use the main one. The main types of straight fertiliser are sulphate of ammonia (which supplies nitrogen), sulphate of potash (potassium), single superphosphate (phosphorus), magnesium sulphate (magnesium) and sulphate of iron (iron).

Straight fertilisers are usually used for fixing issues caused by specific nutrient deficiencies, although may also be applied to certain plants at set times of the year when they need large amounts of individual nutrients.

Organic versus inorganic

The other main division is between organic and inorganic. Organic fertilisers are made from plants and animals and contain only organic sources of nutrients, examples include fish, blood and bone and bone meal. These tend to be slower acting, but many people prefer them as they feel they are more environmentally friendly.

Inorganic fertilisers are either created synthetically or are made from naturally occurring minerals obtained from mining. They tend to be more concentrated and faster acting than organic fertilisers. Straight fertilisers are almost always inorganic.

With so many different options to choose from it can be hard to know which fertiliser is best for your specific needs. That is why the team here at Proctors are always happy to provide advice and guidance. Please feel free to get in touch and we will discuss your requirements with you and help you find the appropriate products.

What Are Different Types of Fertilizer?

Fertilizer is material that is applied to the soil or sprayed on crops aboveground directly or indirectly in order to supply nutrients, increase crop yields and improve product quality. Direct fertilizer supplies essential nutrients to crops, including NPK fertilizer, compound fertilizer and micro-element fertilizer, etc. Indirect fertilizer is used for improving soil physical and chemical properties, thereby making growth condition of crops better, such as lime, gypsum and bacterial fertilizers. Fertilizer is in a variety of classification method and types, while having great difference in ingredient and chemical property. What are different types of fertilizer? How to classify the fertilizer? This question is explained in further detail below.

Inorganic fertilizer
Inorganic fertilizer or chemical fertilizer contains one or more nutrient elements for crops growth, which is made by chemical means. It includes nitrogen fertilizer, phosphate fertilizer, potash fertilizer, micronutrient fertilizer and compound fertilizer, etc. The fertilizer is characterized by simple component, high nutrients and long fatty effect.
Nitrogen fertilizers
Nitrogen fertilizers contain nitrogen that crops need during development. Nitrogen plays a very important role for crops growth, which is part of amino acids in plants and is a component constituting the protein. Meanwhile, it is constituent part of chlorophyll that tips the balance in the process of photosynthesis. Nitrogen can also help crops sub-colonization. Nitrogen fertilizer can not only increase production of agricultural products, but also improve the quality of agricultural products.

1.Ammonium nitrogen fertilizer
Ammonium nitrogen fertilizer contains ammonium bicarbonate (NH4HCO3), ammonium sulfate {(NH4) 2SO4}, ammonium chloride (NH4Cl), ammonia (NH3.H2O), ammonia (NH3) and so on. Ammonium nitrogen is easy to be adsorbed by soil colloids, partially into the clay mineral crystal layer. Ammonium nitrogen becomes nitrate easily by oxidation. Ammonia losses volatilizes in an alkaline environment. When crops absorb excess ammonium calcium, magnesium and potassium, it cuases a certain inhibiting effect. Ammonia has a strong irritating odor, corrosiveness and volatileness. Therefore, it can not be directly used for fertilizing. It is available after configured to dilute ammonia.

☆Ammonium bicarbonate
Ammonium bicarbonate is white compound and crystal in granularity, clintheriform and columnar. Aqueous solution is alkaline. Because of unstable nature, it is decomposing into carbon dioxide, ammonia and water above 36℃.Decomposition is finished at the temperature of 60℃. Nitrogen is used for a variety of soil. It can provide ammonium and carbon dioxide for crops growth. Because of low nitrogen content, it is easy to agglomerate. It not only promotes crop growth and photosynthesis, but also helps crops come into leaf.

☆Ammonium sulfate fertilizer
Ammonium sulfate fertilizer is white orthorhombic crystal, which is soluble in water and insoluble in alcohol. Ammonium sulfate is mainly used as fertilizer in agriculture. The advantage of the fertilizer is relatively small hygroscopicity, not easy to agglomerate. Compared with ammonium nitrate and ammonium bicarbonate. Ammonium sulfate has good physical properties and chemical stability. Ammonium sulfate fertilizer is readily available fertilizer and good biological fertilizer. The reaction in the soil is acidic so that the fertilizer is fit for alkaline soils and carbonaceous soils. The disadvantage is that nitrogen content is low.

☆Ammonium chloride
Ammonium chloride is white crystal or colorless crystal powder. Hygroscopicity is small, but it can absorb moisture being caking in wet rainy weather. Powdered ammonium chloride is easily deliquescent, qualified products even worse. Moisture absorption point is generally about 76%. Therefore, the fertilizer should be kept in dry place. It can be used as fertilizer. Avoid using ammonia fertilizer with alkaline fertilizer. It is better not to apply the fertilizer in saline-alkali soil as it may reduce fertility.

2.Nitrate nitrogen fertilizer
Nitrate nitrogen fertilizer includes nitrate fertilizer sodium nitrate (NaNO3), calcium nitrate {Ca (NO3) 2} and ammonium nitrate (NH4NO3), etc. Nitrate nitrogen dissolve easily in water and moves fast in soil. It not only promotes cation absorption, but also facilitates the synthesis of organic anion. For instance, corn and wheat prefer nitrate nitrogen fertilizer. Under the condition of equal nitrogen amount, yield-increasing effect of nitrate nitrogen fertilizer is more prominent than other nitrogen fertilizers. Vegetables have strong preference for nitrate nitrogen. In hydroponic experiment, as long as the nutrient solution is added nitrate, vegetables grow normally without ammonium or urea nitrogen. Simultaneously, tobacco responds to nitrate well. Applying nitrate nitrogen fertilizer increases output of tobacco and improves its quality.

☆Sodium nitrate
Sodium nitrate is colorless transparent or white rhombohedral crystal. It is easy to deliquescent. Under the condition of small amounts of sodium chloride with impurities, deliquescence of sodium nitrate would greatly increase. Sodium nitrate helps combust, so it should be stored in a cool well ventilated place. It is used as readily available fertilizer, especially pertinent in beets, radishes and so on.

☆Calcium nitrate
Calcium nitrate is a typical fast-acting foliar fertilizer. It can successfully act on acidic soil because calcium can neutralize soil acidity. It is convenient for regeneration fertilizing of winter crops, additional fertilization and excessive consumption of alfalfa growth. In addition, it is widely used for sugar beet, fodder beet, poppy and corn, supplying calcium for crops.

3.Amide nitrogen fertilizer
Urea, also known as carbamide, is a white crystal and one of the simplest organic compounds. The nitrogen content of urea is 46%, which is the highest in solid nitrogen fertilizer. It is the final product of protein metabolism in mammals and some fish. As a neutral fertilizer, urea is suitable for a variety of soil and plants. It is easy to save and use. Because of small destructive effect to soil, it is the chemical fertilizer with heavy usage. Urea is the most common nitrogen fertilizer. Urea is suitable for all crops and soils, which is used for base fertilizer and additional fertilizer.
Urea is used as base fertilizer and topdressing, sometimes as seed fertilizer. Under normal circumstances, urea conversion needs 7-10 days at the temperature of 10℃，4-5 days at 20℃, and only two days at 30℃. When urea is converted to ammonium in the soil, it can be absorbed by seedlings in quantity. Therefore, the utility of urea fertilizer should be a few days earlier than the other administration.

Phosphorus fertilizer
Phosphorus is the the main nutrient in phosphorus fertilizer. Fertilizer efficiency depends on effective phosphorus pentoxide content, soil properties, fertilizing method and crop strains, etc. Phosphorus is a component of the cell protoplasm in plants. It plays an important role in cell growth and proliferation. Phosphorus is also involved in photosynthesis, the use of sugar and starch and energy transfer. Phosphate fertilizer also promotes the growth of plant root systems, making the plant ripe early. In the fruit stage, massive phosphorus transfers to the grain, making seed full.
1.Water soluble phosphorous fertilizer
This kind of fertilizer is soluble in water, having high fertilizer efficiency.
The main products are calcium superphosphate and triple superphosphate.

☆Calcium superphosphate
Calcium superphosphate, also called ordinary superphosphate, is obtained by decomposing phosphate rock with sulfuric acid. Calcium phosphate contains effective 14% ~ 20% P2O5(of which 80% to 95% soluble in water), being a part of water-soluble phosphorous fertilizer. It is gray or white powder (or particles), which can be used as phosphatic fertilizer directly or compound fertilizer ingredients. To mix with nitrogen fertilizer is conductive to nitrogen fixation, reducing nitrogen loss.

☆Triple superphosphate
Triple superphosphate is small granular solids, slightly acidic, which has gray or dark brown colour in appearance. It is suitable for long-distance transport and storage. It is soluble in hydrochloric acid, nitric acid and water, practically insoluble in ethanol. Triple superphosphate fertilizer is suitable for a variety of soil and crops. It can be used as base fertilizer, topdressing and compound (mixed) fertilizer. It is widely used in rice, wheat, corn, sorghum, cotton, fruits and vegetables, etc.

2.Mixing soluble phosphate fertilizer
Nitrophosphate is the fertilizer that obtained by decomposition nitric acid, while N/P ratio is 2:1. The use of the fertilizer can supply trace elements in the soil. It can also significantly improve the quality of agricultural products. Nitrophosphate applies not only to wheat, corn, rice and other food crops, but also for rape, tea, cotton, garlic, banana, litchi, apple, watermelon, grapes and other industrial crops. It should be deep placement, casingsoil, deep application of base fertilizer, to avoid contacting with the seeds or roots directly. It is generally used as base fertilizer for common field crops and top application for industrial crops. It is better to apply frequent, small amounts of fertilizer, which aims to improve the utilization of fertilizer.

3.Citrate-soluble phosphatic fertilizer
This kind of fertilizer is insoluble in water. It mainly contains precipitated phosphate, steel slag phosphate fertilizer, calcium magnesium phosphate and defluorinated phosphate fertilizer. Generally, it is applicable to the acidic soil, so it should be used for base fertilizer. It can be dissolved by organic acids that are secreted by soil and plant roots , and then it is gradually absorbed by crops.
Potassium fertilizer
Potassium is the primary nutrient in potash fertilizer. Potassium in plants usually accounts for 0.2% ~ 4.1% of dry matter, second only to nitrogen. In plant growth and development, potassium is involved in the activation of more than 60 kinds of enzymes, photosynthesis, assimilate transportation, carbohydrate metabolism and protein synthesis.
1.Muriate of potash
Potassium chloride is chemically neutral and fast-acting fertilizer, which is well suited for rice, wheat, cotton, corn, sorghum and other field crops. Because of physiological acidity, potassium can be used in neutral calcareous soils. It can be used as base fertilizer or topdressing. Because potassium chloride fertilizer contains a large amounts of chloride, it will affect the growth of seed germination and seedling.
When it is used as base fertilizer, it should be applied to arable soil 10-15 days before sowing. It should be used early in order to leach chlorine ion to lower soil by rain or irrigation water, removing or reducing damage to crops.
2.Potassium sulphate
Potassium sulphate is one kind of potash fertilizer. Potassium sulphate consumption is far less than potassium chloride, which is less than 10% in international potash fertilizer market. It is suitable for a variety of crops, especially for tobacco, sugarcane, potato, sweet potato, grapes, tea and cruciferous crops (such as rape, beans, etc.). It is generally used for dry land rather than paddy field.

Organic fertilizer

Organic fertilizer is commonly known as farmyard manure or natural fertilizer, mainly from animals and plants. When it is applied to soil, it can supply carbonic materials for plants growth. It includes a variety of organic acid and rich nutrient elements. It not only provides complete balance of nutrients, but also has high manurial effect. Organic fertilizer can increase the content of organic matter, promote microorganism reproduction and change soil physical and chemical properties. Therefore, it is the main nutrient for green food.

1.Agricultural waste
Some agricultural wastes are good materials for organic fertilizer, such as straws, bean pulp, and cottonseed meal and so on. The wastes play an unique role in increasing soil nutrient and improving soil structure.
The main manure ways are used directly to field. The technology is simple to operate, while saving time and labor. Related experiments have shown that the soil porosity increases 2.1% to 4.1% after straw using to field for 2 to 3 years, organic material increasing 0.5 ~ 1.7g / kg, rapidly available potassium increasing 15.0 ~ 18.7mg / kg.

2.Livestock manure
These materials include pig manure, chicken manure and rabbit manure, etc. Livestock manure is one of natural fertilizer in agriculture.see more at: Chicken Manure Fertilizer Granulation Technology
Untreated livestock manure contains hazardous substance, such as escherichia coli, nematode and eggs. The application of untreated excrement rises temperature after fermentation, causing seedling burnt. To improve efficiency and reduce harm to crops and the environment, animal dung should be applied to field after complete composting.

3.Industrial waste
Some industrial waste are good materials for organic fertilizer, such as distilers’ grains, vinegar residue and sugar-free grains. On the one hand, the use of wastes in agriculture increases resource utilization rate and reduces environment pollution. On the other hand, it reduces the burden on industry and changes waste material into things of value.
4.Municipal sludge
Because of growing sewage treatment works, the production of municipal sludge is increasing year by year. Many people pay more attention to how to use it reasonably. Applying municipal sludge into agriculture is a good choice for urban construction.
River muck and sewage can be made into organic fertilizer. Because of complete component of the sludge, it just meets the requirements of nutrients in plants growth. Therefore, processed sludge can be used as fertilizer. It contributes to soil amelioration as well as reducing pollution. Not only solving the problem of waste treatment, but also is good for plants growth.

Compound Fertiliser

Today's requirements for tomorrow's needs

Sustainability can be defined in many ways but in general terms, it is all about managing today’s requirements without impacting on the ability to meet tomorrow’s needs. It can also be split into three dimensions: economic, environmental, and social. The first two of these, economic and environmental, are very clearly linked to YaraMila fertilisers. Considering the economic dimension, or sometimes referred to as ‘profit’, then this is very relevant to farm profitability. In wheat trials, YaraMila Extragrass increased yield by 173% taking a crop from 7.26 t/ha to 12.6 t/ha. This profitability improvement equates to £704/ha. The YaraMila brand helps identify that each granule supplies some P and K as well as N and S. The P and K element improved profitability by £67/ha in this trial. The extra revenue achieved through investing in YaraMila comes from the targeted application to meet the crops demand, alongside the accurate, even spread of nutrient that is achieved at the point of application.

Naturally, it is important that this ‘profitability’ doesn’t come at the expense of the environment. An environmental measure that can be used towards improved sustainability is resource efficiency. An example here is Nitrogen Use Efficiency (NUE) which in arable crops can be targeted at 80%. When this is calculated for the YaraMila applications described above, then the NUE% was improved by 4% at the optimum nitrogen rate. Achieving the optimum nitrogen rate is also key for sustainability, thus reducing losses in the nitrogen cycle. Nitrogen management tools such as the N-Tester and N-Sensor can be used to determine application rates.

Another consideration regarding environmental sustainability are the N2O emissions during fertiliser production. Yara was instrumental in the development of the ‘abatement’ technology that removes over 90% of the N2O emissions that occur during the nitric acid production stage of manufacture, significantly reducing the carbon footprint.

The third pillar of sustainability is the societal component that a product can deliver. Food security and reduced poverty are clearly humankind gains associated with fertiliser. It has been calculated that mineral fertiliser nourishes 48% of the global population, and has saved 2.7 billion lives over the last hundred years.

As society now looks to mitigate ‘climate change’, further reductions in carbon footprints need to be made if ‘net zero’ targets are to be achieved. Yara is investing in a number of innovations, including ‘green ammonia’ that will ‘decarbonise’ fertiliser further adding to its current sustainability profile.

Contact us to discuss your requirements of Ammonium Sulphate Fertiliser. Our experienced sales team can help you identify the options that best suit your needs.