Ammonium Sulphate

Description

Ammonium Sulfate Granular&Crystal

Ammonium Sulphate contains nitrogen in readily available ammonium form and sulfur in fast-acting sulfate form. Ammonium Sulphate will continue to grow cost-effective feed in periods of cool/wet conditions.

Chemical Properties

Chemical formula: (NH₄)₂SO₄

N content: 21%

S content: 24%

Water solubility 750 g/L

Solution pH 5 to 6

Ammonium Sulphate Specification:

	Caprolactam Granular	Caprolactam Crystal
Items	Standard	Standard
Appearance	White Granular	White Crystalline
N	21%min	21%min
S	24%min	24%min
Fe	0.007%max	0.007%max
As	0.0005%max	0.0005%max
Moisture	1.0%max	1.0%max
Free acid	0.05%max	0.05%max
Water insoluble	0.02%max	0.02%max
Size	2-5mm	——

Agricultural Use

Ammonium sulfate is used primarily where there is a need for supplemental N and S to meet the nutritional requirement of growing plants. Since it contains only 21% N, there are other fertilizer sources that are more concentrated and economical to handle and transport. However, it provides an excellent source of S which has numerous essential functions in plants, including protein synthesis. Because the N fraction is present in the ammonium form, ammonium sulfate is frequently used in flooded soils for rice production, where nitrate-based fertilizers are a poor choice due to denitrification losses. A solution containing dissolved ammonium sulfate is often added to post-emergence herbicide sprays to improve their effectiveness at weed control. Increasing herbicide efficacy with ammonium sulfate is particularly effective when the water supply contains significant calcium, magnesium, or sodium concentrations. A high-purity grade of ammonium sulfate is often used to avoid plugging spray nozzles.

Management Practices

After addition to soil, the ammonium sulfate rapidly dissolves into its ammonium and sulfate components. If it remains on the soil surface, the ammonium may be susceptible to gaseous loss in alkaline conditions. In these situations, the incorporation of the material into the soil as soon as possible…or application before an irrigation event or a predicted rainfall is advisable. Most plants are able to utilize both ammonium and nitrate forms of N for growth. In warm soils, microbes will rapidly begin to convert ammonium to nitrate in the process of nitrification 【2NH₄⁺+4O₂→2NO₃^–+2H₂O+4H⁺】. During this microbial reaction, acidity [H⁺] is released, ultimately decreasing soil pH after repeated use. Ammonium sulfate has an acidifying effect on soil due to the nitrification process…not from the presence of sulfate, which has a negligible effect on pH. The acid-producing potential of ammonium sulfate is greater than the same N application from ammonium nitrate, for example, since all the N in ammonium sulfate will be converted to nitrate, while only half of the N from ammonium nitrate will be converted to nitrate.

Application Corps

Potato, Rice, Flax, Cabbage, Maize, Winter grain, Forage grasses, Winter rape seed, Sunflower

Product FAQs

When to Use

Autumn, Winter, Spring

Precautions

Avoid application before large amounts of rainfall (40ml plus within 10 hours) to reduce any leaching.

Nitrogen’s Role in Plants

Nitrogen is always the nutrient in highest demand by plants, due to the greater content of nitrogen present on a dry weight basis in comparison to any other nutrient.
Nitrogen is a primary component of amino acids which are the building blocks of proteins. Thus, by adding nitrogen to soil the protein content in plants is increased.
Nitrogen is part of the chlorophyll molecule and a part of numerous enzymes and coenzymes. Chlorophyll is responsible for photosynthesis, where sunlight is absorbed and stored in the plant as sugars and proteins.
Therefore, nitrogen is an integral part of photosynthesis.
Signs of nitrogen deficiency – reduced plant growth, yellowing of the leaf, early crop maturing.

Sulphur’s Role in Plants

Sulphur is essential in forming plant protein as it is present in cysteine and methionine, two vital amino acids involved in protein synthesis.
Key component of coenzymes and vitamins, involved in energy transfer and lipid synthesis.
Some sulphur compounds are responsible for the taste and smell of plants, like onions.
Sulphur amino acids are at high levels in animal fibres, therefore sufficient sulphur is required for good wool production.
Promotes nodule formation in legumes
Signs of sulphur deficiency – light green to yellowish coloured young leaves, reduced plant growth rates, plants that are short, small and slender.

Why Use Ammonium Sulphate?

What makes Ammonium Sulphate such an efficient nitrogen source?

#1. Quicker Response times

Ammonium Sulphate contains nitrogen in plant available ammonium form, resulting in a faster and larger nitrogen response compared to Urea in cool/wet conditions.

#2. Reduced Nitrogen Losses

Ammonium nitrogen is stable and less susceptible to volatilization losses compared to urea nitrogen. Dickie Direct clients are typically applying ammonium nitrogen at 2/3 the rate compared to urea nitrogen and are achieving significantly better responses.

#3. Sulphate Sulphur

Ammonium Sulphate contains readily available sulphate sulphur which is often a limiting factor to nitrogen response during cool/wet periods. This is a result of increased sulphate leaching over this time, combined with cool/wet soil conditions slowing down the rate at which organic sulphur is mineralised into plant available sulphate sulphur.

#4. Reduce Nitrogen Inputs

With less units of nitrogen required to grow more feed, Ammonium Sulphate is better for our environment and well suited to regions operating under nitrogen caps.

Packaging Details

packaged in 9.5KG/25KG/50KG PP woven bag with PE liner;
packaged in 500kg/1000kg/1250kg jumbo bag lined with PE bags inside;
packaged customized as per clients’ request

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