University of Tabriz Journal of Agricultural Science and Sustainable Production 2476-4310 28 1 2018 04 21 Improving Soybean (Glycine max L.) Growth and Yield by Integrated Mineral and Bio-Fertilizers Management Improving Soybean (Glycine max L.) Growth and Yield by Integrated Mineral and Bio-Fertilizers Management 19 35 7334 FA Manochehr Shiri Janagard Morteza Kamrani Saeed Hokmalipour Yaegoob Raei Journal Article 2018 05 05 In order to investigate growth indices, yield, and nitrogen and phosphorous content in soybean under bio- and chemical fertilizer application, a factorial experiment based on a randomized complete block design with three replications was carried out on the research farm of the Moghan College of Agriculture & Natural Resources during 2015. The first factor, Biosoy Bio-fertilizer containing different strains of <em>Bradyrhizobium japonicum</em> bacteria, included inoculation of seed and non-inoculation; and the second factor, chemical fertilizer, included non-application of fertilizers (0%), 50 kg.ha^-1 urea + 66 kg.ha^-1 diammonium phosphate (33%), 100 kg.ha^-1  urea + 132 kg.ha^-1  diammonium phosphate (66%), and 150 kg.ha^-1 urea + 200 kg.ha^-1 diammonium phosphate (100%). The results showed that the lowest leaf area index (2.17), total dry matter accumulation (374.17 g.m^-2), crop growth rate (8.6 g.m^-2.d^-1), grain yield (3738.3 kg.ha^-1), and leaf chlorophyll index (20.83) values were observed from the combined treatment of non-inoculation and non-application of fertilizer. The highest values of leaf area index (5.46), total dry matter accumulation (784.5 g.m^-2), crop growth rate (21 g.m^-2.d^-1), grain yield (7602.8 kg.ha^-1), and leaf chlorophyll index (38.16) were recorded from the combined treatment of inoculation by Biosoy and 33% of chemical fertilizer. Inoculation treatments significantly showed higher nitrogen content and nitrogen to phosphorus ratio than non-inoculated ones. All-told, soybean inoculation with Biosoy bio-fertilizer containing <em>Bradyrhizobium japonicum</em> bacteria not only increases soybean growth, development and yield, but also, reduces chemical fertilizers usage, production costs, and environmental risks. <br />  In order to investigate growth indices, yield, and nitrogen and phosphorous content in soybean under bio- and chemical fertilizer application, a factorial experiment based on a randomized complete block design with three replications was carried out on the research farm of the Moghan College of Agriculture & Natural Resources during 2015. The first factor, Biosoy Bio-fertilizer containing different strains of <em>Bradyrhizobium japonicum</em> bacteria, included inoculation of seed and non-inoculation; and the second factor, chemical fertilizer, included non-application of fertilizers (0%), 50 kg.ha^-1 urea + 66 kg.ha^-1 diammonium phosphate (33%), 100 kg.ha^-1  urea + 132 kg.ha^-1  diammonium phosphate (66%), and 150 kg.ha^-1 urea + 200 kg.ha^-1 diammonium phosphate (100%). The results showed that the lowest leaf area index (2.17), total dry matter accumulation (374.17 g.m^-2), crop growth rate (8.6 g.m^-2.d^-1), grain yield (3738.3 kg.ha^-1), and leaf chlorophyll index (20.83) values were observed from the combined treatment of non-inoculation and non-application of fertilizer. The highest values of leaf area index (5.46), total dry matter accumulation (784.5 g.m^-2), crop growth rate (21 g.m^-2.d^-1), grain yield (7602.8 kg.ha^-1), and leaf chlorophyll index (38.16) were recorded from the combined treatment of inoculation by Biosoy and 33% of chemical fertilizer. Inoculation treatments significantly showed higher nitrogen content and nitrogen to phosphorus ratio than non-inoculated ones. All-told, soybean inoculation with Biosoy bio-fertilizer containing <em>Bradyrhizobium japonicum</em> bacteria not only increases soybean growth, development and yield, but also, reduces chemical fertilizers usage, production costs, and environmental risks. <br />  https://sustainagriculture.tabrizu.ac.ir/article_7334_b7d8f5ab78950f032ac1858821449965.pdf