Hi
Tamil Nadu agricultural University is a really reputed university in India. the basic qualification for a post graduation course is a 50% aggregate in your bachelor's degree. Speaking about the admission, there is a group discussion round after you clear the merit list and is a personal interview round which you will also have to clear where they will test your ability and skillset etc. all in all yes, there is a personal interview round which you will have to clear to get into this college for your post graduation degree after answering your entrance exam.
Good luck