This field deals with understanding of biological and chemical processes that affect plants, dairy, and the production of food. Food science & technology, agronomy, horticulture, dairy technolog, etc.are some of the fields.
You can join Indian Navy, Indian Airforce, Indian Army by writing NDA, AFCAT, INS, examination. You will not only get to serve your nation, but also become a class- I officer and get paid handsomely.