| Common Fertilizer Chart |
Diammonium phosphate(DAP)
DAP is the most widely used phosphate fertilizer among growers today.It is an excellent source of P and nitrogen for plant nutrition.It is highly soluble and thus dissolves quickly in soil to release plant-available phosphate and ammonium. 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.A notable property of DAP is the alkaline pH that develops around the dissolving granule.As ammonium is released from dissolving DAP granules, volatile ammonia can be harmful to seedlings and plant roots in immediate proximity.
Formula: (NH4)2HPO4
Total N(%):18
Available phosphoric acid(%): 46
Soluable potash(%): 0
Type of Fertilizer: Compound fertilizers
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Monoammonium phosphate(MAP)
MAP has been an important granular fertilizer for many years. It is completely water soluble, generally applied in the granular form and used in the formulation of suspension fertilizers. Granular MAP is applied in concentrated bands beneath the soil surface in proximity of growing roots or in surface bands. It is also commonly applied by spreading across the field and mixing into the surface soil with tillage. With its low pH levels, is best used for high-alkaline soils. It is an ideal starter fertilizer because MAP contains less ammonia-nitrogen than DAP, reducing potential seed damage.
Formula: NH4H2PO4
Total N(%):11
Available phosphoric acid(%): 52
Soluable potash(%): 0
Type of Fertilizer: Compound fertilizers
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Ammonium polyphosphate
Ammonium Polyphosphate is a simple fertilizer containing nitrogen and a high level of phosphorous.A liquid solution (10-34-0). The agronomic effectiveness of APP is similar to that of MAP. It is the least expensive form of liquid phosphorous, it is used as an ingredient in liquid blends or as alone as a high P input.
Formula: (NH4)n+2PnO3n+1
Total N(%):10
Available phosphoric acid(%): 34
Soluable potash(%): 0
Type of Fertilizer: Compound fertilizers
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Potassium nitrate
Potassium nitrate is a chemical compound with the chemical formula KNO3.Common uses of potassium nitrate are in fertilizers.It is a source of potassium and nitrogen, two macronutrients (primary nutrients) essential for plant nutrition and growth. Since healthy growth requires large amounts of nitrogen and potassium, these elements have to be added to the soil in order to achieve healthy growth.
Formula: KNO3
Total N(%):13
Available phosphoric acid(%): 0
Soluable potash(%): 45
Type of Fertilizer: Compound fertilizers
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Common Fertilizer Chart Fertilizer: Ammonium polyphosphate
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