MP Board · Class 9 · Science · Improvement in Food ResourcesExplain two major differences between Manures and Chemical Fertilizers.

Manure is an organic, naturally derived substance obtained from decomposing animal dung and plant residues. It adds humus to the soil, improves its physical texture, but contains nutrients in low concentrations. In contrast, fertilizers are commercially manufactured chemical substances rich in specific plant nutrients like Nitrogen, Phosphorus, and Potassium. Fertilizers act quickly and provide concentrated nutrients, but over-use can degrade soil fertility and cause water pollution.