Hi Gagan!

Sorry to say, but you cannot pursue M.Tech after Bsc in agriculture. To pursue M.tech from a good college you need to attempt GATE exam. And as per the eligibility of GATE exam, only the students who have completed B.Tech/B.E/ MSc can write this exam. So, first you need to complete MSc then attempt GATE exam and then you are eligible to purse M.Tech degree in the interested domain.

Hope I answered your query, thankyou!