Hello Aspirant,
Yes , you can get admission in engineering colleges for the 4 year B.Tech Agriculture engineering course even if you do not have biology in 12th . The eligibility criteria is 10+2 with minimum 50% aggregate in physics , chemistry and mathematics from a recognized board of education. You have to either clear national or state level entrances to gain admission . If you are opting for private universities then, you will have to clear entrances separately conducted by them .
https://engineering.careers360.com/colleges/list-of-be-btech-in-agricultural-engineering-colleges-in-india
https://engineering.careers360.com/colleges/list-of-agricultural-engineering-colleges-in-andhra-pradesh
All the best
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