ВЛИЯНИЕ РЕГУЛЯТОРОВ РОСТА НА ДИНАМИКУ НАКОПЛЕНИЯ ПЛОЩАДИ ЛИСТОВОЙ ПОВЕРХОСТИ И ФОТОСИНЕТИЧЕСКОГО ПОТЕНЦИАЛА КОРМОВОЙ СВЕКЛЫ В УСЛОВИЯХ НЕЧЕРНОЗЕМНОЙ ЗОНЫ РФ

Abstract

Intensification of agricultural production provides for the development and introduction of new, progressive and cost-effective techniques. In the Non-Chernozem zone of the Russian Federation, the issue of increasing the productivity of forage crops with high quality indicators that provide the livestock industry with juicy feeds is extremely acute. One of the ways to obtain a guaranteed high, stable crop yield, on the example of fodder beet experiencing a number of stressful situations during the growing season, is the use of modern, highly effective growth regulators that positively affect the growth and development of the crop. The research was carried out on the basis of the experimental field of the Kaluga branch of the RSAU – MTAA named after K.A. Timiryazev in 2019-2020 on sod-podzolic sandy loam soil in the Kaluga region on fodder beet of the Eckendorf yellow variety type. The aim of the study was to study the influence of various growth regulators on the dynamics of leaf surface growth, photosynthetic potential of fodder beet in the Non-Chernozem zone. The positive effect of the use of growth regulators on crop yield was established, the effect of seed pickling was 26,5-62 t/ha or 4,9-11,5%, with foliar application of 22,5-66 t/ha or 4,2-12,3%, the dynamics of the accumulation of the leaf surface area by the time of full ripeness increased by 4.1-12.3% and 1.8–10.0%, respectively, according to the application options in the culture cultivation technology relative to the control.