Hey,
Here is the list of some of the colleges in Punjab that offer B.Sc in Agriculture:
1. Khalsa College;Agriculture
2.Chandigarh Group of Colleges,Mohali
3. RIMT University,Gobindgarh
4.PCTE Group of Institutes,Ludhiana
5.Guru Nanak Dev University,Amritsar
6.Lovely Professional University,Jalandhar
Hope this helps.
Good luck.