Plant and Soil Science

A significant role in solving the problem of vegetable protein deficiency is playing soybeans,modern high-performance varietes of which, with developing and improving of adaptvecomponents its growing technologies, are able to form consistently high yields of high-quality seeds.Among these components, selecton of varietes, clarificaton of fertlizing doses and seed inoculatonin accordance with soil and climatc conditons of a partcular region, are of great importance.The purpose of research was to identfy features of soybean productvity formaton of differentvarietes depending on seeds inoculaton and doses and tming of mineral fertlizers applicaton in conditons of the Right-Bank Forest-Steppe. The experiment was laid during 2013–2015 in conditons of the SERF “Salivonkivske” of the Insttute of Bioenergetc Crops and Sugar Beet of NAAS on typical low humus chernozems.According to the results of research, was established that in conditons of the Right-BankForest-Steppe of Ukraine the maximum yields studied hybrids formed under conditon of combinaton seed treatment before sowing by phosphonitragin and applicaton of N30P60K60 like themain fertlizer and extra feeding N15 in the budding phase, what allowed to obtain at early-ripeningvariety Vilshanka 2.91 t/ha and at mid-season variety Suzir’ya – 3.17 t/ha. Compared withthe absolute control, the yield increase in these variants by 1.02 and 0.98 t/ha, respectvely.

soybean, variety, inoculation, top dressing, fertlizers, productivity