Growth, grain yield, and water productivity of different rice varieties in response to irrigation management techniques

Abstract The higher water consumption in the flooding irrigation system has challenged rice cultivation. Applying management techniques that help to save and increase productivity is necessary deal with shortage. We evaluated growth, yield, consumption, responses genotypes techniques. experiment was arranged a split-plot design three replications at Rice Research Institute of Iran, Mazandaran. treatments were four varieties (Toloo, Tarom, Tisa, Shiroudi) as main plots six methods (continuous (CFI) from transplanting 20 days after 50% flowering (I1), CFI 15 (I2), 10 (I3), 5 (I4), stage (I5), alternate wetting drying (AWD) (I6)) sub-plots. results showed Toloo genotype had highest grain lowest greatest compared other studied genotypes. I6 treatment slight reduction yield (6% loss) able water-saving by 17.3%.