بررسی زمانهای مختلف محلولپاشی روی بر عملکرد دانه و ارتفاع ارقام جو

n Year 2014, an experiment was conducted at Ramin Agriculture and Natural Resources Univercity of Khuzestan research station in order the effect of zinc sulfate foliar application in different growth in on grain yield and plant height in barley cultivars. The research was designed according to Factorial, Based on Randomized Complete Blocks Design (RCBD). The treatment levels Experimental factors were included four different times of foliar application, including application of zince sulfatate in No spraying, Tillering, the esteming and Flowering on The barley cultivars. Spraying at all times zincSulfate and the net zinc amount of three grams per thousand cc of water. SAS software was used for data analysis. The results showed that the best step to increase the yield of the variety of Jonoob and Zahak flowering cultivar, there was no significant difference between different stages of the Karoon. There effect times was no significant on height The resulted The Maximum heigh of cultivars Zahak with mean (89.1) and the minimum hight Karoon (71.59).