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Agronomy QUESTION #2024
Question 1
DAP (Di-Ammonium Phosphate) has the chemical formula \((NH_4)_2HPO_4\) and its N:P₂O₅ analysis is:
  • 46:0
  • 18:46✔️
  • 16:48
  • 14:48
Correct Answer Explanation
DAP contains approximately 18% N and 46% \(P_2O_5\), making it one of the most concentrated phosphatic fertilizers. Its high nutrient content (64% total nutrients) makes it highly cost-effective for basal application, particularly for phosphorus supply in cereal and oilseed crops.