INFLUENCE OF THE AFTERACTION OF DIFFERENT FERTILIZER SYSTEMS ON MICROBIOLOGICAL ACTIVITY OF SOIL AND OAT PRODUCTIVITY

A. D. Fedulova¹, G. E. Merzlaya², D. A. Postnikov^1
1Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, ul. Timiryazevskaya, 49, Moskva, 127550, Russian Federation
²D. N. Pryanishnikov All-Russian Research Institute of Agrochemistry, ul. Pryanishnikova, 31 a, Moskva, 127550, Russian Federation

Abstract. According to the results of the continuous agrochemical inspection of arable soils in the Non Black Soil zone of Russia, there was revealed an increase in fertility of soils in the years of intensive use of fertilizers (1970–1990). A long-term stationary field experiment is one of the most important methods of agrochemical investigations. The experiment was carried out to analyze the influence of afteraction of fertilizer systems on edaphic parameters of an agrocenosis and productivity of fodder-grain crops. This is necessary to substantiate the choice of the most effective fertilizer system for oat growing on sod-podzol soil under conditions of the west part of the Non Black Soil zone of Russia. The design of the experiment included the following options: control (without fertilizers); a threefold dose of nitrogen (ammonium nitrate); a threefold dose of phosphorus (superphosphate); a threefold dose of potassium (potassium chloride); a threefold dose of a full mineral fertilizer (NPK); a threefold dose of organic fertilizer (litter manure of cattle); a single dose of NPK + a single dose of manure; a double dose of NPK + a double dose of manure; a threefold dose of NPK + a threefold dose of manure; a fourfold dose of NPK + a fourfold dose of manure; a fivefold dose of NPK + a fivefold dose of manure. The single dose of mineral fertilizers for oat was equal to 30 kg/ha of nitrogen, phosphorus, and potassium, or organic fertilizers – 3 t/ha. Work was performed in a long-term field experiment with a grain-grass crop rotation. The productivity of oat at its cultivation without application of fertilizers on average over the years of the investigation did not exceed 1.77 t/ha. The greatest reliable increases from an afteraction of fertilizers were in the organic and mineral system of fertilizers with three- and fourfold doses. Against the background of these systems, the oat productivity was 2.41 and 2.75 t/ha, respectively, which was higher by 36–55% than in the control. In the same variants, a high degree of biological activity of sod-podzol light loamy soil (82% and 55%, respectively) was revealed according to the results of a decrease of weight of flax cloth.

Keywords: system of fertilization; afteraction; biological activity of soil; oat; productivity.

Author Details: A. D. Fedulova, post graduate student (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); G. E. Merzlaya, D. Sc. (Agr.), prof. (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); D. A. Postnikov, D. Sc. (Agr.), prof. (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).

For citation: Fedulova A. D., Merzlaya G. E., Postnikov D. A. Influence of the Afteraction of Different Fertilizer Systems on Microbiological Activity of Soil and Oat Productivity. Dostizheniya nauki i tekhniki APK. 2018. Vol. 32. No. 4. Pp. 31-33 (in Russ.). DOI: 10.24411/0235-2451-2018-10406.