Hello Student

You have taken the Bsc agriculture course. Now you want to tell want to change your subject. In this case you can only change subject which is  agriculture or agriculture related . But you have to take admission from the first year of 3/ 4 years agriculture related courses like biotechnology , or microbiology courses. First of all you have to submit and request application to the authority of the college and mention your choice of change of subject. Subject is in the course details in the respective college then you will get it but in this case you have to take admission from the first year.

Hope this will help.