УРОЖАЙНІСТЬ ПШЕНИЦІ ОЗИМОЇ В КОРОТКОРОТАЦІЙНІЙ ПРОСАПНІЙ СІВОЗМІНІ ЗАЛЕЖНО ВІД УДОБРЕННЯ Й ОСНОВНОГО ОБРОБІТКУ ҐРУНТУ

Using optimal fertilization system and conducting rational basic soil tillage under all rotation crops favorwinter wheat yield increase. However, there are not enough experimental data concerning the effect offertilization and practices of soil cultivation on winter wheat grain productivity in the zone of insufficientmoistening. So, these are the topicality and practical importance of the present studies, the aim of which isestablishing the impact of basic soil cultivation systems on winter wheat yields under organic and mineralfertilization systems in short-rotation row crop succession. The task of the research was to identify the influenceof different techniques of basic soil tillage on grain productivity of winter wheat; study the effect of variousfertilization systems used during cultivating crops in short-rotation row crop succession, the output ofwinter wheat grain; investigate and analyze winter wheat grain productivity under complex effect of proceedingcrops on it, and also fertilization and soil tillage methods. Corresponding field experiments wereconducted in the Left-Bank Forest-Steppe of Ukraine, in particular, during permanent experiment at VeselyiPodil Experimental Selection Station (in Semenivka district, Poltava region) of the Institute of Bio-EnergyCrops and Sugar Beet of the National Academy of Agrarian Sciences of Ukraine during 2015-2018. As aresult of the studies, it has been established that in short-rotation row crop succession, 20-22 cm deep plowingunder silage corn, 30-32 cm deep plowing under sugar beet, and 10-12 cm shallow soil tillage underwinter wheat and spring barley applying 6.25 t of manure + N33.8Р33.8К33.8 without straw and sugar beet topsper 1 ha of plow land during crop rotation resulted in the highest winter wheat grain yield – 4.61 t/ha. Plowingunder all crops against a background without fertilizers, straw, sugar beet tops, and also plowing combinedwith applying 6.25 t of manure + N33.8Р33.8К33.8 + straw + sugar beet tops per 1 ha of plow land duringcrop rotation ensured significant winter wheat yield increase in comparison with the variants, in which soilwas plowed exclusively under row crops and shallow soil tillage was conducted under cereals (using correspondingidentical fertilization systems of the variants).