Farmers harvest wheat crop in an agricultural field in India.

wheat is the most important food-grain of India and is the staple food of millions of Indians, particularly in the northern and north-western parts of the country.

Conditions of growth for wheat are more flexible than those of rice. In contrast to rice, wheat is a rabi crop which is sown in the beginning of winter and is harvested in the beginning of summer. The time of sowing and harvesting differs in different regions due to climatic variations.

The sowing of wheat crop normally begins in the September-October in Karnataka, Maharashtra, Andhra Pradesh, Madhya Pradesh and West Bengal; October-November in Bihar, Uttar Pradesh, Punjab, Haryana and Rajasthan and Nov.-Dee. In Himachal Pradesh and Jammu & Kashmir.
The harvesting is done in Jan.- Feb. in Karnataka, Andhra Pradesh, M.P., and in West Bengal; March-April in Punjab, Haryana, U.P. and Rajasthan and in April-May in Himachal Pradesh and J&K. The growing period is variable from one agro climatic zone to other that effects the vegetative and reproductive period leading to differences in potential yield. The important factors affecting the productivity are seeding time and methodology, crop establishment and climatic conditions during the growing season.