Which is a better option among B.Sc in agriculture and B.Tech in biotechnology?

In my opinion, it's definitely a B.Tech. B.Tech degrees are four-year degrees, the last semester comprises of a 45 month project that will definitely teach you hands-on biotech. It also enriches your practical knowledge and makes your CV look good. If your luck is good, you might even publish paper

Definitely, as B.Tech will give you a lot of exposure to practical environment and you will gain more practical knowledge. It enriches your practical knowledge.