Question

Which of the following attributes to differentiate fertilisers and manure?

• A. Increase in crop yield.
• B. Direct cause of water pollution.
• C. Increased water holding capacity of soil.
• D. Improvement of soil structure.

Answer 1

The correct option is B Direct cause of water pollution.

$\bullet$ Manures are the organic substances obtained by the decomposition of animal excreta and plant waste. Adding manure is a natural way of increasing soil fertility and in turn increasing yield.
$\bullet$ Fertilisers are artificially synthesised inorganic salts which also increase yield. Excessive use of fertilisers kill the micro-organisms present in the soil. They runoff into the nearby water bodies which would result in water pollution.