A.N. Khalipskii, A.A. Churakov, D.N. Stupnitskii, S.V. Khizhnyak, P.O. Abduraimov
Krasnoyarsk State Agrarian University, prosp. Mira, 90, Krasnoyarsk, 660049, Russian Federation
Abstract. In 2015–2016 we evaluated the influence of doses of mineral fertilizers and foliar extra-nutrition on potato productivity and development of its diseases. Industrial experiments were carried out on leached chernozem of the Krasnoyarsk forest-steppe at the premises of OOO “SKhP Dary Malinovki”. These experiments included the following options for the main fertilizer application: NPK 32, 48, 64, 80, 96, 112, 128 kg/ha of active substance, the control variant was without fertilizers. Foliar applications were carried out by 1% water solutions of Zelenit, Intermag Profi, Izabion preparation against the background of the major doses of fertilizers of 32, 64, 128 kg/ha and without fertilizers (the control variant). The maximum yield of tubers (32.4 t/ha) was obtained against the background of N48P48K48. Under conditions of the normal moistening (2015), the contribution of the dose of the main fertilizer in the yield was 73 %. At the deficit of precipitation in 2016 (HTC was 0.8) the productivity reduced by 9.3–27.7 %, in comparison with the control (28.1 t/ha), in all variants of the experiment. A single foliar application of all of the studied preparations enhanced the productivity by 52 % against the best background (N64P64K64), in comparison with the control. The maximum effect was obtained by single treatment with Zelenit for all variants of the main fertilizer, the average increase was 1.1 t/ha. Double foliar treatment with all of the studied preparations reduced yield by 1.7–5.2 t/ha in all variants of the main fertilizer. The increase in the doses of mineral fertilizers led to the enhanced development of potato diseases: late blight, early blight, and bare patch. It was not revealed the significant effect of a number of foliar treatments with all of the studied preparations on the spread of late blight and bare patch. The double treatment with the studied solutions led to the significant increase in injury by early blight from 12.2 % to 19.9 % (p was less than 0.01). The best water supply was established at distribution of potato after spring wheat. Pre-winter stocks of productive moisture in the one-meter layer, compared to the permanent cultivation, were higher on average by 15 %.
Keywords: potato, background of mineral nutrition, foliar extra-nutrition, yield, relief, diseases.
Author Details: A.N. Khalipskii, D. Sc. (Agr.), head of department; A.A. Churakov, Cand. Sc. (Agr.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); D.N. Stupnitskii, Cand. Sc. (Agr.), head of laboratory; S.V. Khizhnyak, D. Sc. (Biol.), prof.; .O. Abduraimov, research fellow.
For citation: Khalipskii A.N., Churakov A.A., Stupnitskii D.N., Khizhnyak S.V., Abduraimov P.O. Influence of Nutrition Background, Territory Relief on Potato Productivity and Spread of Its Diseases. Dostizheniya nauki i tekhniki APK. 2017. Vol. 31. No. 8. Pp. 31-34 (in Russ.).