Name: Diammonium Phosphate (18-46-0)
SKU: 37415
Availability: InStock

Diammonium Phosphate (18-46-0)

£45.00

Ammonium phosphate fertilizers first became available in the 1960s, and DAP rapidly became the most popular in this class of products. It’s formulated in a controlled reaction of phosphoric acid with ammonia, where the hot slurry is then cooled, granulated and sieved. DAP handles and stores well. The standard nutrient grade of DAP is relatively high, at 18-46-0, so fertilizer products with lower nutrient content may not be labeled DAP.

The inputs required to produce one ton of DAP fertilizer are approximately 1.5 to 2 tons of phosphate rock, 0.4 tons of sulfur (S) to dissolve the rock, and 0.2 tons of ammonia. Changes in the supply or price of any of these inputs will impact DAP prices and availability. The high nutrient content of DAP helps reduce handling, freight and application costs. DAP is produced in many locations in the world and is a widely traded fertilizer commodity.

Chemical properties

Chemical formula: (NH₄)₂HPO₄
Composition: 18% N, 46% P₂O₅ (20% P)
Water solubility (20 degrees C): 588 g/L
Solution pH: 7.5 to 8

Agricultural use

DAP fertilizer is an excellent source of P and nitrogen (N) for plant nutrition. It’s highly soluble and thus dissolves quickly in soil to release plant-available phosphate and ammonium. A notable property of DAP is the alkaline pH that develops around the dissolving granule.

Description

Since the nitrogen in its content is in the form of ammonium (NH4), it is especially effective in the first growth stages of plants. The amount of nitrogen in its structure may not meet all the needs of the plant when used as a base (subsoil) fertilizer. For this, in the use of DAP, the plant should be supported with other nitrogen fertilizers in top fertilization. It is retained in the soil because its nitrogen is in the form of ammonium (NH4). In case of excessive precipitation or excessive irrigation, nitrogen is not lost by washing from the soil.

Phosphorus is the highest base fertilizer.
Phosphorus is the most effective fertilizer in calcareous soils.
It ensures the germination (exit) of the seed.
It accelerates root development in plants.
It increases flowering in plants.
It provides seed and grain binding.
Early harvest and abundant crops are achieved with DAP fertilizer.

What is DAP fertilizer?

DAP (Diammonium Phosphate) fertilizer is a two-nutrient fertilizer. It contains 18% nitrogen (N) and 46% phosphorus (P). Since the nitrogen in its content is in the form of ammonium (NH4), it is especially effective in the first growth stages of plants. The amount of nitrogen in its structure may not meet all the needs of the plant when used as a base (subsoil) fertilizer. For this, in the use of DAP, the plant should be supported with other nitrogen fertilizers in top fertilization. It is retained in the soil because its nitrogen is in the form of ammonium (NH4). In case of excessive precipitation or excessive irrigation, nitrogen is not lost by washing from the soil.

Where to use?

DAP fertilizer is used as phosphorus fertilizer in our country as well as all over the world. Phosphorus as a plant nutrient is essential for root development in the early growth stages of the plant and phosphorus is very much needed for energy metabolism. If it is not applied in sufficient amount or at the appropriate depth, phosphorus deficiency is seen in the plant; There is a big drop in yield and quality.