FORMATION OF WEEDINESS OF THE WINTER WHEAT DEPENDING ON THE FERTILIZER SYSTEM UNDER THE EXPERIENCE FIELD OF VNAU

The article reflects the results of studying features formation level weediness winter wheat agrocenosis with gradually increasing rates nitrogen nutrition against background recommended phosphorus and potassium fertilizers. A literature review scientific sources on impact mineral segetal vegetation in is carried out. species generic composition weeds was determined taking into account various fertilizer options quantitative percentage values, basis which a generalization respect to specifics additional from standpoint influencing growth number most dominant genera made. effect fertilizers indicators quantitatively weighted weediness, ultimately made it possible formulate useful interval for reducing by certain rate estimated. Based conducted studies, ensuring corresponding levels competitive stress between plants weed are formulated. nature distribution agrophytocenoses context individual biological characteristics determined. Fertilizer 60 kg/ha d.r. conditions our research, Podolyanka variety can be marked as landmark system sufficient cenotic tension, determines subsequent reduction indicator an increase nutrition. Prospects further research modern fractional application main critical periods this outlined.