Indian Institute of Technology, Kharagpur is a best IIT for agricultural engineering.

You can also check the top colleges for Agricultural engineering below

Kerala Agricultural University, Thrissur

Aligarh Muslim University, Aligarh

Orissa University of Agriculture and Technology, Bhubaneswar

Central Institute of Agricultural Engineering, Bhopal

Dr ZH Institute of Technology & Management, Firozabad

Tamil Nadu Agricultural University

Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur

Good luck!!