Abstract
The article presents the results of studying the effect of autumn application of mineral nitrogen fertilizers on winter hardiness of winter rye plants. The relevance of research is due to the search for opportunities to reduce the anthropogenic load on the environment, in particular by minimizing the use of artificial fertilizers. The studies were carried out for three years in the fields of the North-West region of the Russian Federation, on medium-cultivated sod-podzolic loamy soils. Sowings of winter rye were placed on the predecessor, early potatoes, under which organic fertilizers were applied for the main tillage. Experimental plants of winter rye were fed on seedlings with ammonium nitrate; in the control, autumn fertilizing was not used. The experimental results showed that the autumn application of nitrogen fertilizers practically did not affect the percentage of successfully overwintered plants. This allows us to conclude that the autumn use of nitrogen fertilizers for winter rye is inexpedient and that it is possible to abandon their autumn use in order to reduce environmental pollution.
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