Question

Find out the correct sentence about manure

1. Manure contains large quantities of organic matter and small quantities of nutrients.
2. It increases the water-holding capacity of sandy soil.
3. It helps in draining out an excess of water from clayey soil.
4. ts excessive use pollutes the environment because it is made of animal excretory waste.

Options

• (i) and (iii)

• (i) and (ii)

• (ii) and (iii)

• (iii) and (iv)

Answer 1

(i) and (ii)

Explanation:

Manures are natural fertilisers. They are prepared by the decomposition of animal excreta and plant waste. They are bulky sources of organic matter, which supply nutrients in small quantities, but organic matter in large quantities. Examples of manure are farmyard manure (FYM), compost, vermicompost, etc. Manures enrich the soil with nutrients and replenish the general deficiency of nutrients in the soil. Manures add organic matter (called humus) to the soil, which restores the soil texture for better retention of water and for aeration of the soil. It increases the water-holding capacity in sandy soils and drainage in clayey soil. They also avoid water – logging in clayey soils. Manures protect our environment from synthetic chemicals.