Gavrilov S. Agroecological efficiency of basic tillage methods and fertilization under spring barley in the fild crop rotation of the Polissia

The thesis states the research results on the study of the influence of basic tillage methods at various fertilizer systems on the agroecological state of gray forest sandy loam soil. The ecological compatibility of organic and mineral fertilizers with different their ratioes when long-term applying in the field croup rotation is proved. Rational and economically advisable fertilizer dose under spring barley in the Polissia conditions is determined. It is established that on condition of the phytosanitary state control of spring barley crops after fertilized forectop - potatoes, it is advisable to use surface tillage 10-12 cm, deep with disk harrow and the application of mineral fertilizers in dose N60P60K60 which secure the obtaining of grain yield up to 5,0 metric tons/ha under favorable weather conditions for a vegetation period.