Which is the most appropriate way to reduce crop loss due to pests?

Find the odd one.

Understand the word pair relation and fill in the blanks.
Sericulture - growing silkworm, _____ - Bee keeping.

Understand the word pair relation and fill in the blanks.
Cowdung - organic fertilizer, Azospirillum - _______

Supply of water to crops at appropriate intervals is called

Understand the word pair relation and fill in the blanks.
Mushroom culture - Growing mushroom, Cuniculture - ______

BHC (Benzene hexachloride) is a

Compost is a

_____ is very essential for the plant growth.