A field study was conducted to determine the effect of three soybean varieties and spraying of foliar nutrition manganese and zinc on some qualitative traits of crop soybean (Glycine max L. Merrill) in two sites The first site was in Agriculture - Research Station Tikrit University ، and the second was in Samarra city in the province of Salahuddin، located 60 km south of Tikrit during summer season of 2013 by using the randomized complete block design (RCBD) with three replicates. The investigation consists of three factors the first was three soybean varieties which were (Industrial 2 and Eman and Shaima)، the second factor was manganese foliar nutrient with three concentrations (0، 75 and 100 mg MnSO4 . H2O mg.L-1 )، the third factor was with three concentrations of zinc (0، 50 and 75 mg ZnSO4.7H2O mg.L-1).
The results indicated superiority of soybean variety Industrial 2 other studied varieties for total chlorophyll content in both locations، oil content and linoleic acid in Tikrit site and oleic acid in Samarra. Manganese foliar fertilization with 75 ppm caused significantly increasing of olic and lenolic acid in both locations، protein content and palmitic acid in the seed in Tikrit location، while Mn0 foliar fertilization recorded the highest levels for both above traits in Samarra. The results of zinc fertilization significantly affect recorded data protein and oleic acid of Tikrit location ، and forlinoleic and palmitic acid in Samarra، while zero level of Zn fertilization recorded the highest rate of protein and oleic acid in Samarra location، and linoleic acid in Tikrit location.Zn fertilizationat 75 ppm significantly increasedlevels of oil and palmitic acid in Tikrit location. The combination of both varieties and fertilization caused highest levels of palmitic acid in both locations، linoleic acid and total chlorophyll in Samarra، while in the site of Tikrit the highest rate of bilateral overlap between the categories and the level of fertilization Zn50 of oleic acid in the seeds.