摘要：High yield varieties with pests and disease resistance and environmental stress is one of the important technological components for increasing farmer productivity and income.. This research was conducted in irrigated rice fields in Kebakramat District, Karanganyar Regency at planting season (PS) II (March-July) and PS III (July-November). The purpose of this study was to determine the growth performance and productivity of high-yield varieties of rice. The completely randomized design was used with 3 treatments 5 times repeated. Code, Winongo were used and IR 64 as a comparison. Phonska 300 kg/ha and Urea 250 kg/ha were used in this study. Data of plant height, number of tillers, panicle length, and production were collected. Data plant growth and grain yield were analyzed using variance analysis. The results showed that high-yield varieties affected increasing production. The highest rice productivity obtained from the Code reached 8.44 t / ha DMG at PS 3 or 18.2% higher than the existing IR 64, while Winongo reached 8.05 t/ha DMG or 12.7% higher from IR 64. Code has the highest production, however, Winongo at PS 3 can also be used as a choice as a substitute for IR 64 besides Code in Karanganyar Regency.
