The Effect of Irrigation-off at some Growth Stages on Remobilization of Dry Matter and Yield of Corn Hybrids

In order to study the effect of irrigation-off at some growth stages on remobilization of dry matter and yield of corn hybrids, an experiment was conducted in split plot based on the randomized complete block design with three replications in a farm located in 15 kilometers to Ahvaz during the summer of 2011. In this research, irrigation treatments included irrigation during all stages of growth (control), irrigation-off at tasselling stage and irrigation-off at milking stage as the main factors were located in main plots, and second factor included K.S.C. 701 and K.S.C. 704 corn hybrids were located in subplots. The results indicated that, the maximum accumulation of dry matter has been at the maturity stages and irrigation treatment in all stages of growth (control) and the maximum mobilization of dry matter to grain has happened in irrigation-off treatment at milking stage. The results showed that, the amount of accumulation of dry matter, mobilization of dry matter to grain, biological and grain yields were more in 701 hybrids.