With reference to Sustainable farming, the objectives of the Integrated Crop Management (ICM) is / are:
1.Minimize dependence on purchased inputs
2.Make use of the indigenous technical knowledge and land use practices
3.Low-cost maintenance of soil structure and fertility
4.Improve Ecological diversity
Choose the correct option from the codes given below:

Answer: [C] 1, 2, 3 & 4

This question is a part of GKToday's Integrated IAS General Studies Module