Hi Gaurav,

You have an interesting query.

But could be answered well if you had been more precise, as to what exactly are you looking out for in the field of agriculture.

Please note some of the professionals working in the area of agriculture which includes:

• Agricultural engineer: Agricultural Engineers are the one who generally apply engineering principles and Biology principles to help in betterment of Agricultural activities.
  To pursue a career in this sector, post 12th science, you would have to appear for engineering entrance exam
• Biotechnologists: They are the one who relate Biology and technology to help in soil conservation and improvement in production. This course can be pursued after 12th science
• Botanist: As the name suggests they are the one who study plants and nature. This course can be pursued after 12th science, whereby you specilise in botany
• Horticulture:They are the ones who work with plants, their breeding, selection, planting and production. Again a degree in science and a masters in horticulture
• Dairy farming: They are the ones who bring out new ways and methods to breed animals especially milking animals.
  
  Please go through the above lists and make a choice, and read more on the particular career.
  If possible discuss and get clarifications from your professors.
  Hope this helps.
  Wish you good luck..............