Hi,

The cut off of colleges every year depending on various factors such as number of seats available,number of candidates qualified in the exam, category of the student,course opted  and so on. The seat matrix also varies with colleges . In Tamilnadu agricultural university, Coimbatote there are a total of 63 seats are available for B.Sc (Hons) Agriculture and 5 seats for sericulture in ICAR AIEEA UG . Similarly other colleges have there own seat matrix. You can check the seat matrix of institutes in following article

https://university.careers360.com/articles/icar-aieea-seat-matrix

An admission to government colleges with this score is tough for a general category student based on previous year data. General  and OBC category students needs minimum 50% to qualify while SC/ST category needs 40% to qualify exam. But the cut off for admission varies with institutes. All the best.