INFLUENCE OF DIFFERENT DOSES OF MINERAL FERTILIZERS ON THE FORMATION OF THE SURFACE MASS OF ALFERA COLUMNIZED UNDER CONDITIONS OF FROZEN SALTED SOILS OF YAKUTIA

Abstract

The widespread production introduction of alfalfa on permafrost soils for agricultural use in Yakutia is a problem of paramount importance. Of great importance for the extreme conditions of Yakutia is its salt and drought tolerance. To achieve this goal (to justify the effect of different doses of mineral fertilizers on the development of sickle-shaped alfalfa), the following tasks were solved: to determine the effect of different doses of mineral fertilizers on the formation of the leaf surface and crop yield of alfalfa. As an experimental object served as a grade of alfalfa sickle-shaped Yakutsk yellow. As a result of the studies, a positive effect of mineral fertilizers on the development of the leaf surface area of the plant, the formation of the yield of fodder mass and foliage of plants were established; however, the application of different doses of mineral fertilizers does not significantly affect the formation of shoots; the complete relationship between the green mass yield and leaf area, the strong dependence of the green mass yield on leafyness and the average negative dependence of the green mass yield on the number of shoots are noted.