chemical-and-agricultural-fertilizer - پارس توسعه فاتح

Sulfammon Fateh®

Brand: Sulfammon Fateh

Producer: Pars Tose’e Fateh Co

Chemical Name: Ammonium sulfate

Molecular Formula: (NH4)2SO4

ompounds: It contains 20.5%(min) nitrogen as ammonium ions and 23%(min) sulfur as sulfate ions

Purity: % 99.5

Application: Fruit, Crops, Vegetables, Lawn, Flowers

Appearance: Granular and Powder

Packing: 50 kg bag or customer requirement

Production capacity: 80,000 tons per year

Production capacity in the next phase: 200,000 tons per year (under construction)

Other names: Diammonium sulfate – Sulfuric acid ammonium salt

Certification: Certificate of registration of fertilizer materials Soil and Water Research Institute – Certificate of Iran National Standards Organizationi

Ammonium sulfate fertilizer

Ammonium sulfate ((NH₄)₂SO₄was one of the first and most widely used nitrogen fertilizers for crop production. This product offers a high solubility rate that offers versatility for several agricultural applications. Ammonium sulfate is used primarily where there is a need for supplemental nitrogen and sulfur to meet the nutritional requirement of growing plants. Considering that ammonium sulfate contains 21% nitrogen and 24% sulfur, it provides an excellent source of sulfur which has numerous essential functions in plants, including protein synthesis.

Functions and symptoms of nitrogen deficiency in plants

Nitrogen is often the most limiting factor in crop production. Nitrogen is needed by plants for the production of proteins, nucleic acids (DNA and RNA), and chlorophyll. As nitrogen enhances plant’s vegetative growth and consequently improves its yield, accordingly the more nitrogen is used by plants, by impacting on physiological processes, increases photosynthesis activities and produces more assimilate, biomass, and eventually yield. Abundant N supply increases the number of meristems produced by plants and their growth, thus encouraging shoot formation and growth in most plants. Arguably, this is the single most important process affected by N, for it is the way in which plants increase their competitive ability in vegetation and the number of fruits and seeds. Symptoms of N deficiency are general chlorosis of lower leaves (light green to yellow), stunted and slow growth, and necrosis of older leaves in severe cases. Research has shown that nitrogen deficiency reduces both leaf area and leaf N concentration, therefore reducing lightcapture and photosynthetic capacity. Furthermore, low biomass accumulation during the vegetative growth may also limit yield. N deficient plants will mature early and crop quality and yield are often reduced.

Functions and symptoms of sulfur deficiency in plants

Sulphur (S) is an essential macronutrient, vital for plant growth and functioning; ranked fourth after nitrogen (N), phosphorus (P) and potassium (K). Precisely, S is of great importance for the primary structure of proteins and functioning of enzymes, by being a constituent of the amino acids cysteine (Cys) and methionine (Met). Sulphur is also a component of oligopeptides (glutathione; GSH), vitamins and cofactors, a variety of secondary plant products such as glucosinolates in Cruciferae and alliins in Liliaceae and a key ingredient in chlorophyll. Therefore, S plays critical roles in the catalytic or electrochemical function of the biomolecules in cells. The use of elemental S is increasing due to its ability to reduce soil pH and to reclaim sodic soils. It has been observed that, without adequate S, crops cannot reach their full potential in terms of yield, quality or protein content. Sulphur plays an important role in physiology and protection of plants against environmental stresses and pests through its antioxidative protective functions. Since plants are often exposed to combinations of abiotic stresses, such as heat, light, cold, drought, salinity, and toxic metals, S can play a significant role in conferring resistance to these stresses. Moreover, the essential role of S element in N metabolism is well recognized. Since plants use N and S jointly to biosynthesize proteins and enzymes, inadequacy of S may lead to ineffective utilization of the plant’s N content. S deficiency symptoms can be difficult to diagnose as effects can resemble symptoms of N deficiency. In contrast to N deficiency, however, S deficiency symptoms initially occur in younger leaves, causing them to turn light green to yellow (chlorosis). In later growth, the entire plant may be pale green. Characteristic spots or stripes are generally not displayed. Additionally, plants deficient in S tend to be spindly and small and stems are often thin. S deficiency can reduce nutrient use efficiency and that N deficiency can also reduce S use efficiency. Besides, limiting S supply to crops depresses the utilization of available soil N, leading to increased nitrate leaching.

Sulfur (S) and nitrogen (N) interaction

In plants, S and N play a synergistically central role in the synthesis of proteins. S requirement and metabolism in plants are closely related to N nutrition, and N metabolism is also strongly affected by the S status of the plant. Various researchers have reported a lack of S to limit the efficient utilization of added soil N. Thus, for maximal use of added N, sulphur addition to the soil becomes essential. Field studies on N and S deficient soils showed that applications of N when no S was applied reduced grain yields, whereas application of S alone produced no grain yield responses.

Why ammonium sulfate fertilizer?

Ammonium sulfate fertilizers have proven to be an excellent source of the readily-available sulfate sulfur and ammonium nitrogen crops crave. Unlike elemental sulfur, the sulfate sulfur in ammonium sulfate is readily available to crop roots, providing them with access to the essential nutrients they need upon application. The ammonium nitrogen in ammonium sulfate is also immediately available for root uptake, and resists nitrogen losses from leaching, volatilization and denitrification. 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. This practice of increasing herbicide efficacy with ammonium sulfate is particularly effective when the water supply contains significant concentrations of calcium, magnesium, or sodium.

How does ammonium sulphate fertilizer affect soil PH?

In warm soils, microbes will rapidly begin to convert ammonium to nitrate in the process of nitrification. During this microbial reaction, acidity [H+]⁺is released, which will ultimately decrease 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 nitrogen application from ammonium nitrate, for example, since all the N in ammonium sulfate will be converted to nitrate, while only half of the nitrogen from ammonium nitrate will be converted to nitrate.

Best management practices for fertilization

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, 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 nitrogen for growth.

Advantages of Ammonium Sulfate Fertilizer

No nitrogen loss via NH3 volatilization when surface applied to acid or neutral soils.
A better nitrogen source for saline soils by decreasing the negative specific effects of NaCl on plant growth and for saline sodic calcareous soils by improving soil structure.
positive effects of soil acidification on increasing availability of soil phosphorus and micronutrients.
Improve nitrogen use efficiency compared to other nitrogen fertilizers.
Less nitrate leaching from ammonium sulfate can reduce pollution in groundwater and eventually drinking water.
Less denitrification with application of ammonium sulfate may minimize greenhouse gases (NO and N2O).

Ammonium sulfate is used primarily where there is a need for supplemental N and S to meet the nutritional requirement of growing plants. It also 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. This practice of increasing herbicide efficacy with ammonium sulfate is particularly effective when the water supply contains significant concentrations of calcium, magnesium, or sodium. A high-purity grade of ammonium sulfate is often used for this purpose to avoid plugging spray nozzles.

Nitrogen fertilizers	Total nitrogen	Ammonium form of nitrogen	Suitable for saline and alkaline soils
	Crystalline ammonium sulfate	%21	%21
	Sulfammon	%21	%21
	Urea	%46
Ammonium nitrate	%34	%17
Diammonium phosphate	%18	%18

Sulfur fertilizers	Total sulfur	Sulfate form of sulfur
Granular sulfur	%90
Sulfammon	%24	%24
Calcium sulfate	%17-18	%17-18
Phosphate-enriched sulfur	%10-15	%5-7.5
Urea to sulfur coating	%15-20

Advantages of sulfamone granular ammonium sulfate fertilizer over other nitrogen fertilizers

N Nitrogen fertilizers	Total nitrogen	Ammonium form of nitrogen	Suitable for saline and alkaline soils	Easy storage and transport	Ability to mix with urea fertilizer
Crystalline ammonium sulfate	%21	%21	✓	–	–
Sulfammon	%21	%21	✓	✓	✓
Urea	%46	0	–	✓	–
Ammonium nitrate	%34	%17	–	–	–
Diammonium phosphate	%18	%18	–	✓	✓

Advantages of Sulfammon granular ammonium sulfate fertilizer compared to other sulfur fertilizers

S Sulfur fertilizers	Total sulfur	Sulfate form of sulfur	Solubility in water	Easy storage and transport	Ability to mix with urea fertilizer
Granular sulfur	%90	–	–	✓	✓
Sulfammon	%24	%24	✓	✓	✓
Calcium sulfate	17-18%	17-18%	–	–	–
Phosphate enriched sulfur	10-15%	5-7.5%	–	✓	✓
Urea to sulfur coating	15-20%	–	–	✓	–

Fateh Group

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