Authors:
N. T. CHEBOTAREV, doctor of agricultural sciences,
A. A. YUDIN, candidate of economic sciences,
P. V. GORODISKYI, laboratory assistant,
N. V. BULATOVA, researcher at the agriculture laboratory research
INSTITUTE OF AGRICULTURE OF THE REPUBLIC OF KOMI (27 Rucheynaya Str., 167023, Syktyvkar)
A. V. OBLIZOV, candidate of economic sciences,
D. A. POPOV, doctor of political sciences, associate professor,
KOMI REPUBLIC ACADEMY OF STATE SERVICE AND MANAGEMENT (11 Kommunisticheskaya Str., 167982, Syktyvkar)
Abstract. In long-term stationary field experiments on sod-podzolic soil conducted research on the effect of mineral fertilizers on the background of the residual effect of lime (1983) recommended, VIA (N60Р75К75), change soil properties, yield of perennial grasses and their chemical composition. Found that mineral fertilizers, introduced the background of the aftereffect of lime significantly alters the agrochemical parameters of sod-podzolic soil. The humus content increased by 0,1 – 0,5 % due to the transformation correponding balances and transfer hard burning forms of nutrients readily available to plants, decreased exchange and hydrolytic acidity. In the variants without fertilizers and NPK only making these phenomena are not observed. Effect of improving soil properties appeared to increase the yield of perennial grasses. When using three doses of lime: up to 3.4–4.0 t/ha C. V. (21.4–42.8 % higher than control, yield control – 2.8 t/ha C. V.). The gathering of fodder units was 2.8 and 3.3 thousand/ha. The use of mineral fertilizers on the background of the effects of three doses of lime increased the yield of grasses to 5.0–5.5 t/ha C. V., 78.5–96.4 per cent exceeded the yield of control. The gathering of fodder units was 4.1–4.6 thousand/ha. a Significant effect of fertilizers and ameliorants on chemical composition of perennial grasses is not established. Chemical composition of perennial legume-grass mixtures were as follows: crude protein – at 10.38–12.23 %, crude fat – 3,12–3.80 %, crude fiber – 24,43–29,42 %, crude ash – 6,41–7.07 % and dry matter and 25.69–28.45 % and indicates a relatively high quality of perennial grasses.
Keywords: lime, fertilizers, soil properties, humus, soil acidity, perennial grass yield.
