See there is no course in MSc which a BSc Agriculture student can pursue. Although, if you have Mathematics in your UG course as an elective subject, then you can go for the course of MCA. MCA can be done by any field graduates provided, the student must have Mathematics in there UG course. As a result, if you have this thing, then you can apply for the MCA. Else, you can go for other certification courses in Data Science/Artificial Intelligence/Python etc and you can do a good job in the field of computer sciences.

For more information regarding the MCA course consider the link below:

https://www.careers360.com/courses/mca-master-of-computer-applications

I hope this helps. Wish you a great day!