Hey Rahul,

There are many private colleges offering admission in course Agriculture Business Management.  Some of the top colleges are

• Indian Institute of Management, Ahmedabad 
  
• Banaras Hindu University,  Varanasi 
• Indian Institute of Management, Lucknow 
• Symbiosis International University, Pune
• Chandigarh University, Chandigarh 
• Aligarh Muslim University, Aligarh
• Annamalai University
• ITM University,  Gwalior

Hope this helps