Delhi’s economy is highly based on its . Wheat, gram, Bajra and Jowar are the important crops grown in Delhi. Tube wells, wells and canals are the major sources of irrigation. The development in the agriculture of Delhi is due to the study and lots of research in agricultural sciences in allied fields. There are numerous institutes of agricultural science by the government of Delhi    in different regions of the place. Delhi boasts of the finest agricultural and allied sciences institutes that study the better production of crops. The 4th World Congress on Conservation Agriculture was held from 4 to 7 February 2009 in New Delhi, where 1,000 delegates gathered.

Conservation Agriculture is based on the following three principles:

• minimum mechanical distribution of the soil
• permanent organic cover of the soil surface, and
• a diversified sequence or association of crops