Hi

NEET exam is entirely for MBBS, BDS,BAMS,BHMS and BUMS like fields. For b.sc in agriculture you do not need to appear in NEET exams . You have to appear in exam of the specific college from where you are thinking to do bsc in agriculture from. It's an entirely different field as compared to medical field so look for the entrance exam of that specific College through their website or any other means .

Hope this helps