Effect of foliar fertilization with zinc and manganese sulfate on yield, dry matter accumulation, and zinc and manganese contents in leaf and seed of chickpea (Cicer arietinum)

To investigate the effects of zinc (Zn) and manganese (Mn) foliar fertilization on yield, dry matter accumulation,Zn and Mn concentrations in leaf and seed of chickpea cultivars, a field experiment was conducted in 2014. Theexperimental design was a split plot in randomized complete block with three replications. The phenological stagesrecorded were as follows: Emergence, flowering, 50% flowering, and harvest maturity. At harvest, economic yieldand its components, biological yield, harvest index, stem, leaf, pod, seed, and total dry weight were measured. TheZn and Mn contents were determined by atomic absorption spectrometry. The results indicated that the spraying ofZn and Mn elements did not have a significant effect on the time from emergence to 50% flowering and the timefrom emergence to maturation. Spraying treatments had a significant effect on dry weight of stems, leaves, pods,seeds, and total plant. In all three cultivars, Zn spraying had the greatest effect on the plant height, number of pods perplant, number of seeds per plant, 100-seed weight, grain yield, biological yield, and dry weight of leaves, seeds, andtotal plant, while Mn spraying had the greatest effect on the increase in stem and pod dry weight and protein content.

Micronutrients Distribution in Soybean Plant with Zn, Fe, and Mn Application.

In order to investigate the effect of some of micronutrients application on micronutrient distribution, partitioning, and their ratio in different parts of soybean plant; we conducted an experiment in field conditions at Kermanshah, Iran, 2010 and 2011. Three levels of zinc (0, 20, 40 kg.ha-1 from ZnSo4 source); iron (0, 25, 50 kg.ha-1 from FeSo4 source) and manganese (0, 25, 40 kg.ha-1 from MnSo4 source) were applied. Based on results, it was found that Zn and Mn concentrations increased within the plant with micronutrient fertilizers application. The highest Zn concentration was observed in pod, but Maximum Fe and Mn concentrations recorded in leaves. With increases in soybean old and reach to full maturity stage, the Zn, Fe, and Mn content in tissue plant were decreased. The results indicated that with Zn application [Zn]/[Fe] and [Zn]/[Mn] ratios in seed increased. With Fe fertilizer application [Zn]/[Fe] ratio was decreased, but had no effect on [Zn]/[Mn] ratio.