Indian agriculture began by 9000 BCE on north-west India with the early cultivation of plants, and domestication of crops and animals. Indian subcontinent agriculture was the largest producer of wheat and grain. They settled life soon followed with implements and techniques being developed for agriculture. Innovation in agriculture goes through three stages: research and product development; demonstration and market validation; and commercialization.
You may find information in the following article https://www.academia.edu/40636409/History_of_Organic_Farming_Return_to_Right_History_of_Organic_Farming_Return_to_Right