Dear Anuj,

The admissions to B.Tech. (DT) programme are done through an All India Combined Entrance Examination conducted by the Education Division of the Indian Council of Agricultural Research, New Delhi. 

In order to be eligible you should have aggregate 50% marks in PCM and English. 

To know in detail you can refer below link

http://www.ndri.res.in/ndri/Design/b_tech.html

Good Luck!!