Yes u can search on career 360 it give u best detail

Yes, you can go abroad for your MBA after your Bsc agriculture course.

There are courses like Agribusiness Management  which can be very beneficial to your. There are various agriculture based companies or fertilizers based companies where the demand is pretty high for MBA graduates from top colleges.

You need to appear for certain exams like TOEFL or GMAT to apply for the foreign Universities.