Performance of different rice genotypes under variable sowing times in climatic condition of Southern Telangana Zone

A field experiment was conducted during Kharif, 2019 at Institute of Rice Research, Rajendranagar, and Hyderabad in Telangana state. The experiment was laid out in split plot design with consisting of four sowing dates in main plots i.e. June 2nd week, July 1st week, July 3rd week and August 1st week and 4 pre released rice cultures RNR 21278, JGL 28545, KNM 1638, WGL 962 and two check varieties KNM 118 and RNR 15048. Significantly higher mean grain yield was obtained when sowing was recorded with D1: June 2nd week (7071 kg/ha) which was at par with D2: July 1st week (6396 kg/ha). D2 July 1st week sowing was in turn at par with D3: July 3rd week (6107 kg/ha) and D4: August 1st week sowing recorded significantly lower yield (4572 kg/ha), thus for the tested cultures June 2nd week sowing was found optimum. Among the varieties V3 (KNM 1638) variety (6425 kg/ha) recorded significantly higher grain yield and was on par with V6 (RNR 15048) (6310 kg/ha), V1 (RNR 21278) (6242 kg/ha) and V2 (JGL 28545) (6111 kg/ha).