Hi,

Mathematics is a mandatory subject for JEE Mains. However, JEE Mains is not mandatory to get admission in B.Tech Agriculture. Here are some entrance exams that are specifically for Agriculture courses:

1. Indian Council of Agricultural Research All India Entrance Examination

2.  Engineering Agricultural & Medical Common Entrance Test (EAMCET):

3.Orissa University of Agriculture and Technology Entrance Test (OUATET):

4.Bihar Combined Entrance Competitive Examination (BCECE)

5.Karnataka Common Entrance Test

Here is a link that you can refer for more details: https://www.careers360.com/courses/agricultural-engineering-course

I hope this helped you.