Mineral nutrition of cultivated and weed plants in agrophytocenoses of a field crop rotation at the integrated application of fertilizers and pesticides

摘要

Four fertilizing systems and three plant-protection systems were studied in a field experiment with a crop rotation involving winter rye, flaz, potato, and barley. The application of herbicides reduced weediness by two times and decreased the removalof nutrients by weeds by 4.5-5.8 times compared to the herbicide-free management system. At the same time, the consumption of basic nutrients (NPK) by cultivated crops increased by 16-18 percent.