Apply of zinc, iron and manganese fertilizer on leaf and grain elements concentration and relationship its with economic and biological yield of soybean

In order to effects of micronutrients on leaf and grain concentration and relationship with economic and biological yield of soybean (Cv. Williams), an experiment was conducted in a factorial based on randomized complete block design with three replicates at research farm, Islamic Azad University of Kermanshah at 2010. In this research different levels of micronutrients such as Zn (20 and 40 kg Zn ha-1), Fe (25 and 50 kg Fe ha-1) and Mn (20 and 40 kg Zn ha-1) were applied and compared with control. The end of growth stage and harvesting time, for the measurement of mineral nutrient concentrations, seeds, and leaves were collected from five plants from each plot. The results showed that Zinc and Iron at leaf and Zinc, Iron and Manganese at grain affected by Zn application. The effect of Fe on leaf zinc concentration was not significant, but increasing Fe concentration grain and leaf. In addition, leaf and grain Mn concentration decreased by Fe applied. Grain and leaf Fe increased response to 25 kg Fe ha-1 applied, but did not changed by 25-50 kg Fe ha-1 application. Such as zinc, leaf and grain manganese concentration in response to Mn applied were increased. The highest Mn concentrations were detected in leaves and grains, when 40 kg Mn ha-1 applied. In contrast, leaf and grain Zn concentration changed very little in response to added Mn. Economic and biological yield affected by Zn, Fe, Mn and interaction Zn and Mn.