The presented study sought to evaluate the growth and productivity of various rice (Oryza sativa L.) cultivars under different water management systems. The experiment ran from May to September 2024, using a split-plot design with two factors and three replications on irrigated paddy fields in Maradekaya Village, South Sulawesi, Indonesia. The main plots were the water management system (intermittent + discontinuous irrigation and intermittent + AWD [alternate wetting and drying]), and the subplots were six rice cultivars (M70D, Padjajaran, Inpari 13, Inpari 19, Inpari 32, and Cakrabuana). The results showed significant effects on the number of tillers and productive tillers by the interaction of water management and cultivars. Other traits, such as harvest age, grains per panicle, filled grains per panicle, and dry milled grain yield, also showed notable variations across the treatments. In contrast, plant height, flowering age, stomatal density, chlorophyll content, and leaf area did not receive significant changes. The highest productivity came from cultivars M70D and Padjajaran, especially under the intermittent + discontinuous irrigation treatment.
Rice (O. sativa L.), cultivars, irrigation water management systems, growth and morphological traits, yield-related traits, productivity
The highest productivity resulted in the rice (O. sativa L.) cultivar M70D, followed by Padjajaran with the intermittent irrigation + discontinuous irrigation water management system.