Effect of different hormone treatments on the growth and grain yield of maize in irrigation different levels

This investigation had done in order to survey effect of water shortage (irrigation after 70 and 140 mm evaporation from evaporation basin) and priming by different hormones (control, salicylic acid, cytokinin and jibberellin) at different concentrations (control, 50 and 100 ppm) based on complete randomized blocks design with three replications in 2015 in the fields of Islamic Azad University Malakan on maize 704. Analysis of variance due to irrigation levels and hormone had significant effect on all traits and seed weight had no significant effect on the type of hormone. Different Concentration hormun in crop height, biomass, ear diameter, number of seeds per ear, number of kernels in a row, seed weight and seed yield had a significant effect. Irrigation after 140 mm evaporation from evaporation pan can reduce seed yield, seed weight and seed number per ear of corn and priming with various hormones were increased corn yield even under Irrigation after 70 mm evaporation from evaporation pan. 50 and 100 ppm concentrations Salicylic acid 33.3 and 38.8 % respectively and 100 ppm concentration of cytokinin and gibberellic 65.1 and 49.1% increase corn yield respectively. Irrigation after 140 mm evaporation from evaporation pan and priming both the impact on yield components (number of seeds and 100 seed weight) of corn grain yield changes was made.