Hello Supragya,
Few of the best colleges for MBA in agribusiness are as follows:
1. Indian Institute of Management, Ahmedabad - It offers PGP-ABM course with major focus on Agribusiness and Rural Management.
2. Indian Institute of Management, Lucknow - It offers PGP-ABM course.
3. Institute of Rural Management, Anand - It offers placements in the fields related to rural Management like NGOs, organisations related to this field.
4. Xavier Institute of Management, Bhubaneshwar
5. National Institute of Agricultural Marketing, Jaipur
6. National Institute of Agricultural Extension Management, Hyderabad
7. Vaikunth Mehta National Institute of Cooperative Management, Pune
8. Amity School of Rural Management, Noida
9. BGIC Institute Delhi
10. Institute of Business Management in Rural Management, Navi Mumbai
11. IRM, Jaipur

I hope the above mentioned information is helpful to you.
All the best...!!!

Hiii..