Primary Macronutrient Fertilizer Examples
Chemical fertilizers provide defined percentages of primary macronutrients (Nitrogen, Phosphorus, Potassium) necessary for vegetative, root, and reproductive development.
Selecting the right combination depends on crop growth stage, soil pH, and Soil Health Card test results.
- Urea (46-0-0): The primary solid nitrogenous fertilizer supplying 46% amide nitrogen; coated with neem oil to reduce volatilization and leaching.
- Di-Ammonium Phosphate / DAP (18-46-0): Supplies 18% ammoniacal nitrogen and 46% water-soluble phosphate, vital for early root establishment.
- Muriate of Potash / MOP (0-0-60): Contains 60% potassium (K2O) as potassium chloride; essential for grain filling, drought resistance, and stalk strength.
- Single Super Phosphate / SSP (0-16-0): Supplies 16% phosphate alongside 11% sulfur and 19% calcium, proving highly beneficial for oilseeds and pulses.
- Potassium Nitrate (13-0-45) & SOP (0-0-50): 100% water-soluble chloride-free fertilizers formulated for precision fertigation in high-value horticulture.
Complex NPK Grades and Balanced Nutrition
Complex fertilizers contain two or more primary nutrients chemically combined within each uniform manufacturing granule.
Using complex grades ensures balanced nutrient distribution across fields compared to uneven manual farm blending.
- NPK 10-26-26 & NPK 12-32-16: High-analysis basal complex fertilizers providing balanced starter nutrition for cereals, sugarcane, and cotton.
- NPK 19-19-19 & NPK 20-20-20: Completely water-soluble balanced grades used for drip fertigation and foliar spray during vegetative growth.
- Balanced fertilization: Combining chemical fertilizers with organic manure preserves long-term soil structure and biological fertility.
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Common questions
What are the most common chemical fertilizers used in India?
The most widely applied fertilizers are Neem Coated Urea (46% N), DAP (18-46-0), MOP (0-0-60), SSP (16% P), and complex NPK grades.
What makes Single Super Phosphate (SSP) unique compared to DAP?
SSP supplies 11% sulfur and 19% calcium in addition to 16% phosphorus, making it especially beneficial for oilseeds and pulses.
How can farmers ensure balanced fertilizer application?
Farmers should conduct regular soil testing and follow the customized nutrient dosages prescribed in their government Soil Health Card.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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