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Nitrogen Fertilizer -Ammonium Phosphate |
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| Importance of the Fertilizer | Ammonium Phosphate is a fertilizer contain both phosphorous and nitrogen in it. The fertilizer is available in two forms Mono Ammonium Phosphate and Di Ammonium Phosphate. They are dried crystalline material with good handling and transporting properties. |
| Amount of Available Nutrients | Ammonium Phosphate contains 20% Nitrogen and 20% Phosphorous |
| Compatibility in fertilizer mixtures |
Ammonium phosphate can be mixed with Murate of Potash, Potassium Sulphate, Ammonium Sulphate, Super Phosphate and Ammonium phosphate. But care should be taken to ensure that such mixing should be done only just before application with Calcium Ammonium Nitrate, Sodium Nitrate and Urea. Ammonium phosphate should not be mixed with Calcium Carbonate, lime, slag. |
| Reaction of the Fertilizer in Soil | Ammonium phosphate when applied in soil will form ammonium and phosphate ions. Ammonium will convert to nitrite and then to nitrate. Plant can absorb both ammonia and nitrate form. Nitrate or ammonia which is not taken by the plant will lost as leaching losses or fixed by the soil or uptake of micro organism or in alkaline soils lost as ammonia. Plant can take phosphate ions. At low pH soils, phosphorous will form difficulty soluble compound with iron and aluminium ion and at pH values near neutrality will form more soluble compounds with calcium and magnesium ions and at higher pH values it will form difficulty soluble compounds with calcium ions. |
| Situations where Recommended | Phosphate of ammonia contains soluble phosphates as well as ammonia, and on that account it is a valuable food for fruits, especially those grown in pots. It is frequently of advantage, when flowers are required for a certain date .Phosphate of ammonia is capable of making several days’ difference in the opening of most flowers. It is not recommended in alkaline soils. |
| References | 1. Yawalkar, K. S., Agarwal, J. P., and Bokde, S., (1996) Manures and Fertilizers, Agri-Horticultural Publishing House, Nagpur |