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Ammonium Sulphate (AS)

admin — Fri, 01 May 2015 15:38:52 +0000

Ammonium Sulphate (AS) is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains: 21% Nitrogen (N) & 24% Sulphur (S).

The primary use of ammonium sulfate is as a fertilizer for alkaline soils. In the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth.

It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. There, it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly effective as an adjuvant for 2,4-D (amine), glyphosate, and glufosinate herbicides.

Diammonium Phosphate (DAP)

admin — Sat, 02 May 2015 03:32:17 +0000

Diammonium Phosphate (DAP) is used as a fertilizer. When applied as plant food, it temporarily increases the soil pH, but over a long term the treated ground becomes more acidic than before upon nitrification of the ammonium. It is incompatible with alkaline chemicals because its ammonium ion is more likely to convert to ammonia in a high-pH environment. The average pH in solution is 7.5–8. The typical formulation is 18-46-0 (18% N, 46% P2O5, 0% K2O).

Urea

admin — Mon, 04 May 2015 14:31:09 +0000

Urea contains 46% Nitrogen (N).

More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer.[40] Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient. The standard crop-nutrient rating (NPK rating) of urea is 46-0-0.