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Information × Registration Number 0206U000257, 0102U002708 , R & D reports Title To develop the effective integrated system, keeping resources, of struggle with weeds on the basis of rational association of biological and mechanical measures and chemical means with the limited application last popup.stage_title Head Onychko Viktor Ivanovich, Registration Date 19-01-2006 Organization The Sumy inststute of agroindustrial produktion popup.description2 Studying of dynamics of occurrence of weeds in crop of a winter wheat for years of researches has shown, that the most essential period for пшеницы - 30-35 days from the beginning of spring vegetation wheat. At kind competitiveness of a winter wheat the contamination of crop is in the greater dependence on density of plants, than on depth of closing up of seeds at crop. In crop of summer barley and on steam sites, during vegetation occurrence of the first wave of weeds for 20 day after crop has been marked. Density of plants and depth of closing up of seeds of barley influences dynamics of occurrence of weeds within 20 days from occurrence of shoots of culture. Entering of nitric fertilizers into top dressing by norm N60 into a phase of an output into a tube results in increase in the general level of a contamination of crop of summer barley. The high level of productivity, on the average for years of researches, has been received at entering N45 - 3,4 t/h. Dynamics of occurrence of weeds in crop of peas during vegetation essentially depends as on a phase of development of cultural plants, and receptions of removal of weeds. Density of plants essentially influences specific structure and an aggregate number of weeds in crop of peas. In vegetations, at formation of the big vegetative weight of peas, there is a greater oppression of weeds at density of standing. Entering of nitric fertilizers at top dressing causes increase in defeat of plants of summer barley illnesses. Their degree depends, as from norm of fertilizers, and a phase of development of cultural plants. Studying of biological efficiency barley has shown their different efficiency against dominating illnesses. Product Description popup.authors popup.nrat_date 2020-04-02 Close