Dear student,
There are three types of agriculture engineering courses, B.Tech in Agricultural engineering, Bachelor of Engineering(BE) in Agricultural Engineering and Diploma in Agricultural Engineering. Out of these three courses, B.Tech in Agricultural engineering and Bachelor of Engineering(BE) in Agricultural Engineering are of four years courses, whereas Diploma in agricultural engineering is either of 2 years course or maximum 3 years course.
As you are asking for 3 years course, then most probably you are looking for Diploma in agricultural engineering course.
Below I am mentioning the list of some top colleges which offers Diploma in agricultural engineering. Please have a look at it.
To know about more such colleges and their details, you can go through the link below.
https://engineering.careers360.com/colleges/list-of-diploma-in-agricultural-engineering-colleges-in-india
I hope this answer helps you.
All the very best!!
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