RICE GROWING SEASONS AND IMPORTANT RICE VARIETIES IN TAMILNADU Rice is a geed of the grass Oryza sativa (asian rice) or less commonly Oryza glaberrima (african grass). It requires Maximum temperature of 36-38°c, and Minimum temperature of 10-12°c. The Optimum temperature required is 30-32°c. For Rice cultivtion annual rainfall of 1000-4500 mm is required. Seasons and Duration: Short duration( 90 - 120 days ) : Navarai, Sornavari, Kar, Kuruvai, Late Thaladi Medium duration (120-140 days): Early Samba, Samba, Late Samba, Thaladi/Pishanam, Late Thaladi, Late Pishanam. Long duration (140-180 days) : Early Samba, Samba, Late Samba, Thaladi/Pishanam, Late Pishanam. Rice varieties that ruling all over the TAMILNADU: A] Short duration varieties; 1] IR 64 This variety of rice has growing Duration (Days): 115 – 120 and they are white in colour. 2] CO 47 This variety of rice has growing Duration (Days): 110 – 115 and they are white in colour. This variety is resis