Hey aspirant , hope you are doing well. According to data in 2017 , a total of 178 marks were required for SCA category and in 2019 178-195 (according to categories) was the cut off to get admission but as the competition increases every year due to agriculture emerging as a desirable subject ,the cut off might get higher. It basically depends on the no. of students applied and have done better but i have given you the general criteria.

Also you can get to know the TNAU better by the link given below

https://www.careers360.com/university/tamil-nadu-agricultural-university-coimbatore

Hope it helped

Thank you