تأثیر زمانهای مختلف محلولپاشی عنصر روی بر غلظت روی و کادمیوم و مس دانه ارقام جو

In 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 order to determine the best time for foliar application of Zinc and Cadmium and Copper in barley cultivars. The research was designed according to Factorial, Based on Randomized Complete Blocks Design.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 Results showed that the rate of tillering and flowering stages, respectively south and Karoon had the highest zinc content was lowest in control. Karoon cultivar was not significantly different between the different stages. The figure is the highest level of cadmium in the Jonoob, where there was no spraying was done, and the lowest value was in the tillering and flowering. Karoon cultivar and Zahak maximum amount of cadmium was observed at a stage where no spraying was done, and the other procedures were almost identical. The effect was significant for copper, so copper is the best time to raise the Copper, no steps were applied.