INFLUENCE OF AGROTECHNOLOGY ELEMENTS ON THE PRODUCTIVITY OF NATURAL LUPINE CULTIVATED FOR GRAIN IN THE CHANGING CLIMATE OF THE CENTRAL NON-BLACK EARTH REGION
2025
Kononchuk, V.V. | Timoshenko, S.M. | Shtyrkhunov, V.D. | Usmanov, R.R. | Kirdin, V.F. | Tulinova, E.A. | FSBSI
On sod-podzolic soils of the Center of the Non-Chernozem Zone of Russia, sufficiently supplied with phosphorus and potassium (IV-V class), regression analysis revealed a clear correlation (R2=0.76-0.82, r = 0.81-0.91) between grain yield and productivity indicators of determinate varieties of narrow-leaved lupine and meteorological conditions of the first half of the growing season (sowing-flowering), according to which their maximum values were formed in the range of HTC 1.00-1.40 (moderate aridity - normal moisture). Regardless of the prevailing weather conditions, the combined use of herbicides (soil weed killer + graminicide) increased grain yield by 21%, protein and exchange energy collection by 26 and 20%. Fertilizer nitrogen at a dose of 50 kg/ha N when applied before sowing did not affect the yield, but showed a tendency (-3…-5%) to reduce the accumulation of exchange energy and crude protein. Foliar feeding with biostimulants with an anti-stress effect increased the values of the considered indicators by 12...19% with normal and high moisture
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