Hi Nanda,

The best books to study for ICAR PG Examination are as follows:-

• General Agriculture for ICAR Examinations - Jain Brothres
• Objective Agriculuture Science - U.D. Charam and J.V. Patil
• Indira's Objective Agricultural Extension

Refer here for more info about the exam - https://www.careers360.com/exams/icar-aieea

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!