Improvement in Food Resources — Science STD 9 — Question

Fertilizers: Fertilizers are one of the major components for obtaining higher yields especially in expensive.

farming practices. Fertilizers are divided into following four groups:

1. Nitrogenous fertilizers: These fertilizers supply the macronutrient nitrogen.

Example: Urea, CO(NH₂)₂.

2. Potassic fertilizers: These fertilizers supply potassium which is one of the essential macronutrient of the plants.

Example: Potassium sulphate, K₂SO₄.

3. Complex fertilizers: These fertilizers contains two or more nutrients.

Example: Nitrophosphate.