Mygal I. Formation of soyabean productivity depending on breed biological features, seeding norms and level of a mineral nutrition in the conditions of western Forest-steppe

Object - the processes of growth and development of soybean plants, forming crop harvest and its quality depending on variety biological characteristics, sowing rates of seeds, fertilizers, inoculation of seed with Bradyrhizobium japonicum strains. Purpose - attempting to establish regularity of forming crop harvest and soybean varieties quality depending on seeding rates, fertilization and seed inoculation with the strains of nodule bacteria under conditions of excessive moisture in Western Forest-Steppe zone of Ukraine. Methods - field, laboratory, quantity and weight, comparative accounting, mathematical-statistical. Results - the paper presents the researches results of studying the peculiarities of growth, development and formation of photosynthetic, symbiotic, individual and grain productivity of soybean varieties depending on the impact of seed sowing rates and the level of mineral nutrition. Implemented - in agricultural enterprises of different ownership forms of Lviv region in the area 60 hectares. Sector - agriculture