Influence of long-term use of fertilization systems on the productivity of winter grain crops

Abstract

In the conditions of the Vyatka-Kama agricultural province, a study was carried out of the effect of long-term use of various fertilization systems on the productivity of winter grain crops and the fertility of soddy medium podzolic soil in terms of agrochemical indicators. Long-term use of the mineral fertilization system in doses of N69P68K53 on soddy medium podzolic medium loamy soil contributed to an increase in winter grain crops’ productivity on average per year in relation to the control without fertilizers – 1.83 tons of grain units/ha. Long-term use of an organic fertilization system against lime background provided an increase in the productivity of winter crops of 0.64 tons of grain units/ha in relation to control. The most effective was the organomineral fertilization system, which contributed to the productivity increase of the studied winter crops in long-term use by 2.64 tons of grain units/ha in relation to control. As a result of a long-term field experiment, it was revealed that the productivity of winter grain crops in the Vyatka-Kama agricultural province significantly depends on agro-climatic conditions. A close inverse interrelation of productivity from the sum of active temperatures and average air temperature was revealed. For expanded fertility reproduction of soddy medium podzolic medium loamy soil in the Vyatka-Kama agricultural province of Russia, an organic-mineral fertilizer system should be used against liming background.