Productivity of sugar beet in various crop rotations of the Left Bank Forest-Steppe with organo-mineral fertilizer

Aim. To establish the influence of the structure, recruitment and placement of field crops in different rotations on the general productivity, yield and quality of sugar beets in particular. The research was carried out in the subzone of unstable moisture of the Left Bank Forest-Steppe of Ukraine on typical low-humus chernozem of the Panfil Research Station of the Institute of Agriculture of the National Academy of Sciences. Methods. The technology of growing agricultural crops in the experiment is generally accepted and recommended for the research area. Chemical plant protection agents were used to produce competitive commercial sugar beet products. Results. The results of research carried out in a long-term stationary field experiment, which was established in 2001, to study crop rotations on typical chernozems of unstable moisture in the Left Bank Forest Steppe, convincingly indicate that during the 2016−2020 research period, the 8-field crop rotation turned out to be the most rational in this zone saturated with 62.5 % grain, 25 % fodder and 12.5 % technical crops: perennial legumes – winter wheat – sugar beets – corn for grain – corn for agriculture – winter triticale – spring wheat – spring barley for organic-mineral intensification systems (by-products of the predecessor + N100 P100 K100 for sugar beets). Conclusions. The yield of sugar beets, which were grown after winter wheat, as a precursor and a corresponding set of crop rotations, was in the range of: 50.86–53.21 t/ha, while the sugar harvest was at the level of – 13.5–13.7 t/ha. The economic efficiency of growing sugar beets in the structure of multi – rotational crop rotations is: conditionally net profit – 70.67–75.05 thousand UAH/ha with a high level of profitability – 338–362 %.