Dear Rahul,
I would like to tell you that there are many colleges in India which offers Agribusiness management.
The following colleges/University are among the top colleges/University which offers Agribusiness management in India

1. Indian Institute of Management Ahmedabad
2. School of Business, University of Petroleum and Energy Studies, Dehradun
3. Institute of Management Studies, Banaras Hindu University, Varanasi
4. Indian Institute of Management Lucknow
5. Symbiosis Institute of International Business, Pune
6. Chandigarh University, Chandigarh
7. National Institute of Agricultural Extension Management, Hyderabad

For more information you can check out their website.

i hope this information helps you

All the best