GRAIN PRODUCTIVITY AND NITROGEN-FIXING CAPACITY OF LUPINE NARROW- LEAF DEPENDING ON SEEDING RATES, FERTILIZERS AND APPLICATION OF HERBICIDES UNDER DIFFERENT WEATHER CONDITIONS IN THE CENTER OF THE NON-BLACK EARTH ZONE OF RUSSIA
2021
Kononchuk, V.V. | Timoshenko, C.M. | Nazarova, T.O. | Shtyrkhunov, V.D. | Nikitochkin, D.N. | Shurkin, A.Yu. | Kolotilina, Z.M.
Five-year studies in a short-term field experiment on a medium-loamy soddy- podzolic soil of the Central Non-Chernozem region with the provision of arable (0-20 cm) layer with mobile phosphorus and potassium at the level of 4-5 classes according to the accepted gradations revealed the features of the formation of productivity and N2 – the fixing ability of a narrow-leaved sowing lupine determinant variety Ladny, depending on agrotechnical factors under different meteorological conditions of growing seasons, and the optimal values of seeding rates, doses and combinations of fertilizers, herbicidal protection for obtaining against the background of the use of growth stimulants with an anti-stress effect (Gumistim Zn, B) 3.5-3.7 t/ha of grain with the accumulation of biological nitrogen (in% of the total) 56-75 in favorable and 36 in unfavorable years for moisture. The most effective protection of the crop from the weed component was provided by using a complex of preparations from the August concern (Kamelot SE, 3.0 l/ha, Miura 0.6 l/ha) after sowing and during the growing season, respectively.
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