Yes you have to clear vbcat for bsc agriculture in Viswa Bharti.

Eligibity-

Age limit 17 <age of candidate <25

For general candidates 60% marks at+2 level with pass marks in any four of the following subjects :

Physics,Chemistry, Biology, Agronomy.

For OBC/SC/ST candidates required percentage is 54%.

The date of entrace exam is not yet announced. For further information check the official site of vbcat.

Thank you.