Agriculture is the science of arts and occupation of cultivating the soil, producing crops and rearing of animals to provide food, wool and other products. 

In the government organizations, a fresher can expect a salary between Rs 20,000/- to Rs 25,000/- per month depending on the efficiency and capability. In private organizations, MNC's and NGO's, an agriculture engineer is paid well. As for a lecturer in the filed of agricultural can earn an initial amount of Rs 15000/- per month plus other allowance.

If you want to go for agriculture engineering you have to appear for JEE Main exam. 

All the Best!!

Below are some good university for agricultural and food  engineering

1- IIT, Kharagpur
2- Amity University, Noida
3- AMU
4- BCKV
5- College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur

To check the full list you can refer below link

Agricultural and Food Technology Engineering Colleges

You have to appear for engineering entrance exam in order to take admission like- JEE Main, JEE Advanced, SRM, VIT, Manipal etc.