EFFECT OF FOLIAR APPLICATION OF IRON (Fe) AND MOLIBYDENIUM (Mo) ON YIELD, PROTEIN AND NODULATION IN SOYBEAN UNDER AGRO CLIMATIC CONDITIONS OF SANLIURFA

This study was conducted in 2017-2018 at the Gundas Research Station belong to the GAP Agricultural Research Institute in Sanliurfa/Turkey to investigate the effects of iron (Fe) and molybdenum (Mo) on soybean (Glycine max. L.) yield, protein and nodule formation. The study was carried out with four replications in the randomized blocks trial design. Standard NPK dose (100-50-0 kg ha(-1)) was applied in the form of 20-20-0 compound fertilizer. Iron, one of the factors, was added in two doses (0.5 kg ha(-1) and 1 kg ha(-1)) in the form of iron sulphate (FeSO4+7H(2)O) and molybdenum in the form of ammonium molybdate (NH4)(6)Mo2O24 4H(2)O) was used as a liquid from the foliar spray. The results showed that application of iron and molybdenum significantly increased the grain yield, number of total and active nodules plant', biomass yield, 1000 seed weight (g), total nitrogen uptake, protein content in soybean. Furthermore, it was observed that combined application of iron and molybdenum significantly produced greater crop yields and more nodulation than the only application of iron or molybdenum. It is therefore recommended that Fe and Mo may be applied to soybean in Sanliurfa for better crop yields and greater root nodulation.