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Agricultural College and Research Institute (AC & RI), Vazhavachanur, Thiruvannamalai district is a new constituent college of Tamil Nadu Agricultural University, Coimbatore and it was started and functioning since 25.08.2014. It is situated on Thiruvannamalai – Kallakuruchi high way and located 22 kilometers south of Thiruvannamalai town. This residential campus is offering B.Sc Agriculture programme, with an allotted strength of 188 students.

An area of 110 acres from the state seed farm Vazhavachanur has been allotted to this new college, which includes wet land and garden land ecosystems with bore well irrigation facility and canal irrigation system. Thenpennai river running south of the location is the main source of water for the irrigated crops. This college is presently involved in education and extension. As on date, the college has Agricultural Meteorology, Soil Science and Agricultural Chemistry Laboratory, Agricultural Microbiology Laboratory and other standard instruments pertaining to each course. Computer lab with WiFi facility, well established gym and sports facilities are available in this campus. The library is equipped with number of reference books and e-journals. Separate hostels for boys and girls studying in this campus. The hostel and campus are under the closed circuit surveillance system. It has plans for future research, mainly to cater the needs of farming community of this area. Laboratory facilities for different faculties are being established.

This campus has well established class rooms and laboratories. Dr. M.Pandiyan, Professor of Plant Breeding and Genetics is the Dean of Agricultural College and  Research Institute, Vazhavachanur.