Abstract
The work shows that in the Vologda region on sod-podzolic medium loamy soil, the use of various doses of fertilizers significantly increased the productivity of rotation crops both with and without herbicides. Fertilizer doses calculated by the balance method for the planned yield using the balance coefficients of nutrient utilization from fertilizers and soil increased the removal of nitrogen, phosphorus, potassium, both by crops and weeds, compared to the control.
Highlights
IntroductionA sufficient amount of heat and often an excess of precipitation (hydrothermal index greater than 1.0) in the Vologda Oblast contribute to the favorable growth and development of crops and weeds
A sufficient amount of heat and often an excess of precipitation in the Vologda Oblast contribute to the favorable growth and development of crops and weeds
The collection of feed units by crop rotation crops without fertilizers and herbicides on average over the years of research amounted to 2.7 t/ha (Fig. 1)
Summary
A sufficient amount of heat and often an excess of precipitation (hydrothermal index greater than 1.0) in the Vologda Oblast contribute to the favorable growth and development of crops and weeds. A significant part of the nutrients of fertilizers and soil is spent on the development of weeds. The application of fertilizers without herbicides, especially in the area of excessive moisture, does not ensure the efficient use of nutrients. There are well known balance methods for calculating the doses of fertilizers for the planned yield of agricultural crops, for the planned increase in yield, etc. The applied method for calculating the doses of fertilizers using differentiated balance coefficients, proposed by Yu.P. Zhukov, provides a planned level of environmentally friendly crop rotation production with simultaneous regulation of soil fertility [1–11]
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