Question

What are manures ? State two types of manure. How does manure affect the soil fertility ?

CBSE Class IX Science SA 2 (3 Marks)

Answer 1

Manure is organic matter, mostly derived from animal wastes except in the case of green manure, which can be used as organic fertilizer in agriculture. Manures contribute to the fertility of the soil by adding organic matter and nutrients, such as nitrogen, that are trapped by bacteria in the soil.
types of manures are:
animal manure
compost
green manure
farmyard manure

Answer 2

Manures contain organic matters and supply nutrients to soil.                                                 1

Kinds of manure : Green manure, compost or vermicompost.                                           

Manure helps in enriching soil with nutrients and organic matter and thus, increases soil fertility.