Shivam every institute doesn't offer MBA/PGDM course in Agri-Business Management. I am mentioning few of the top institutes in Maharashtra 

• MIT School of Management, Pune
• MIT School of Technology Management, Pune
• Symbiosis International University, Pune
• Symbiosis Institute of International Business, Pune
• Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur
• Vaikunth Mehta National Institute of Cooperative Management, Pune
• Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola
• MITCON Institute of Management, Pune
• Vishwakarma Global Business School, Pune
• ITM Institute of Management and Research, Nagpur

Feel free to ask if you have any more queries. All the best!!

Dear Shivam, 

Following institutes in state offers management in Agri business:

Vaikunth Mehta institute, Pune

Symbiosis institute, Pune

Mitcon institute,  Pune

College of Agriculture, Nagpur

KCE institute, Jalgon .

You can also check Marathwada university and other agriculture university in state. But according to me Vaikunth institute and Symbiosis will be  better choices out of the given ones.