The Effect of Intermittent Deficit Irrigation on Yield, Yield Components and Water Productivity of Maize Sc-704

In order to evaluate the effects of intermittent deficit irrigation on corn SC-704. An experiment was conducted in randomized complete block design with four irrigation treatments and three replications research farm of college of Aburaihan at Pakdasht in 2013. Treatments included irrigation method A (control treatment، complete irrigation)، B (irrigation alternating with an irrigation full and round، with 85 percent of full irrigation to the plant) treatments C and treatments D with 65 and 50 percent similar of treatments B، was performed. The results of variance analysis showed that intermittent deficit irrigation had significant effect on characteristics of dry weight of plant، ear weight، grain yield and water productivity. For reaching more water productivity، plant height، biomass yield، ear weight and grain yield، there is no need of full irrigation (100 percent)، and through irrigation Form of treatment B، maximum yield could be reached. According to Correlation of characteristics Determined that ear weight maximum positive correlation and significant one percent with grain yield. So far the most convenient method of applying deficit irrigation for corn in the area، intermittent irrigation with a complete irrigation and the next round with 85 percent complete irrigation.