Hello manega,

There are some best colleges for agriculture in Tamilnadu:-

•VIT University - Vellore Institute of Technology.

•Karunya Institute of Technology and Sciences.

•Tamil Nadu Agricultural University.

•Bharath University - Bharath Institute of Higher Education.

•Thiruvalluvar University.

•Ramakrishna Mission Vivekananda Educational and Research.

I hope this helpful for you.

Best wishes!!