Hey there

There are various colleges which gives btech degree in agriculture engineering. Some of them are

1. Integral University, lucknow.

2. Bannari Amman institute of technology, erode. Etc.

For getting admission into these colleges different engineering exams are there like jee mains, UPSEE, OJEE, AP EAMCET etc.

Check detailed list of colleges

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/colleges/list-of-be-btech-in-agricultural-engineering-colleges-in-india&ved=2ahUKEwjalYrWkaHpAhX-xTgGHQFdBWYQFjAJegQIAxAB&usg=AOvVaw1R0DS4MaCCdpyvyRQejhox&cshid=1588833337172

Good luck