India is a monsoon land. Besides it is basically an agricultural country. monsoon climate influences agricultural crops in a big way 
1.India is primarily an agricultural country. about 75% of the total population directly or indirectly earns a livelihood from agriculture. growth and development of Indian agriculture is mainly dependent on monsoon climate.
2. Climatic diversities have led to different cropping patterns. both tropical and temperate climates allow agricultural crops to be raised here without any difficulty. agricultural crops include rice, wheat, cotton etc 
3. high temperatures have resulted in ever growing seasons
4.Western depressions cause rains in the north western parts of the country in winter . It is ideal for wheat cultivation. 

The irrigation of northern plains crops are dependent on monsoons.