Effectiveness of Chemical method of Controlling Winter Weeds in the Pre-Sowing Period during the Cultivating of the Spring Wheat
It was discussed the problem of harmfulness of winter weeds in spring wheat crops and the reasons of their spread in modern conditions of minimization of soil cultivation. This was the basis for conducting field tests of various selective herbicides (based on sulfonylurea and 2,4-D ester) and one nonselective (which based on glyphosate) against winter weeds in the pre-sowing period of spring wheat cultivation technology. As a result, herbicides with the highest biological effectiveness against winter weeds from the Brassicaceae were determined, which provided the maximum level of the preserved harvest of spring wheat. Based on the results, it is recommended to carry out early pre-sowing treatment with herbicides on steam fields clogged with winter weeds.