The most common phosphate fertiliser in India

Answer: Option C

The most common phosphate fertilizer in India is DAP.
Di-ammonium Phosphate popularly known as DAP is a preferred fertilizer in India because it contains both Nitrogen and Phosphorus which are primary macro-nutrients and part of 18 essential plant nutrients. DAP (NH₄)₂HPO₄: Fertilizer grade DAP Contains 18% Nitrogen and 46% Phosphorus (P₂O₅).
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.