effect of method and levels of irrigation on corn yield and component new varieties KSC Barkat3 (SC. B3)

Strategies for greater efficiency of water, especially in the agricultural sector is one of the most important strategies for improving water resources of Iran. The aim of this research is to achieve the best level of irrigation in irrigation methods for corn cultivation in Jouin city.This research were contracted in the research field Barkat company to the city Jovin on two varieties of maize (KSC 704, KSC barkat 3) growth period (135 days) This experiment using split split (split-split plot) in a randomized complete block design with 6treatments and four replications. The treatments include two sub-plots and sub-plots irrigation to full irrigation, deficit irrigation at two stress levels 75 and 50 percent of water requirements and irrigation tape two main treatments (T-tip) and furrow irrigation and stacking the two sub- treatments is the varieties type. The field irrigated by volume and is calculated based on data from pan evaporation. Results showed that deficit irrigation on water use efficiency, biomass water use efficiency , grain yield, were significant at P 0. It also reviews water use efficiency in the variate, KSC Barkat to 3 to 5 percent higher efficiency compared to single cross 704