V.I. Prosyannikov, O.I. Stepanova
Center of Agrochemical Service «Kemerovskii», ul. Tsentral’naya, 15, pos. Novostroika, Kemerovskii r-n, Kemerovskaya obl., 650510, Russian Federation
Abstract. The generalization of data of local monitoring of the arable soil layer since 1994 made it possible to reveal the influence of agrochemical parameters on the yield of cereals. The analysis was performed on conjugated data. The dependence of the grain crop productivity on the soil agrochemical parameters is confirmed by statistical indicators. The experiment was carried out on leached chernozems (n = 24) with pH(KCl) of 4.9–6.2 in the arable layer, the content of humus was 6.6–10.5%, of P2O5 – 73–305 mg/kg, of K2O – 65–270 mg/kg; and on dark gray forest soils (n = 26–41) with pH(kCl) of 4.3–6.3, the content of humus of 4.1–10.4%, of P2O5 – 38–158 mg/kg, and of K2O – 52–209 mg/kg. The yield of spring wheat on leached chernozems increases on average up to 50% from 1.0– 1.2 t/ha to 2.2–2.5 t/ha (r = 0.42–0.62) at a decrease in soil acidity from 4.3 to 6.3 units, an increase in humus content from 6.6 to 10.5%, in phosphorus content from 73 to 305 mg/kg and in the content of exchangeable potassium from 65 to 270 mg/kg. The acidity of the soil solution caused 39% of the yield variation, the content of mobile phosphorus and exchange potassium – 19%, and humus content – 17%. The yield of spring wheat on dark gray forest soils increased from 1.0–1.4t/ha to 1.9–2.5 t/ha (r = 0.74–0.82) at a change of soil acidity from 4.3 to 6.3, an increase in the content of mobile phosphorus from 38 to 158 mg/kg, of exchangeable potassium – from 52 to 220 mg/kg, and of humus – from 4.1 to 10.4%. With the content of humus, the yield weakly correlates (r = 0.35). In general, the acidity of the soil solution caused 54% of yield variation, the content of P2O5 and K2O – 67 and 59% respectively, and humus – 12%. The dependence of yield of cereals on the gross content of microelements was determined on leached chernozems. Variation of the spring wheat yield was determined by the gross content of zinc by 56%, of manganese – by 44%, of copper – by 30% (r = 0.55–0.75). When the content of cadmium increased from 0.65 to 1.6 mg/kg, there was the tendency of the yield reduction.
Keywords: spring wheat; cereals; agrochemical properties; humus; mobile phosphorus; exchange potassium; acidity of soil solution; microelements; zinc; cadmium; copper; cobalt; manganese.
Author Details: V.I. Prosyannikov, Cand. Sc. (Agr.), deputy director; O.I. Stepanova, D. Sc. (Agr.), director (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Prosyannikov V.I., Stepanova O.I. Influence of Agrochemical Parameters of Soils on Productivity of Winter Wheat in Kemerovo Region. Dostizheniya nauki i tekhniki APK. 2017. Vol. 31. No. 10. Pp. 32-35 (in Russ.).