Viliana Vasileva1, Ekaterina Lupova2 and Dmitry Vinogradov2
1Institute of Forage Crops, Pleven 5800, Bulgaria
2Ryazan State Agrotechnological University P.A. Kostychev, Ryazan 390044, Russia
Vasileva, V., Lupova, E. & Vinogradov, D. (2021). The yield of spring bird rape (Brassica campestris L.) varieties according to the level of mineral nutrition. Bulg. J. Agric. Sci., 27 (4), 744–750
The production of spring bird rape (Brassica campestris L.) in the Non-Chernozem zone of the Russian Federation is a promising direction for increasing the resource base of oil raw materials in the region. The article presents studies to optimize the mineral regime on gray forest heavy loamy soils of the experimental agrotechnological station of Ryazan State Agrotechnological University Named after P.A. Kostychev (FSBEI HE RSATU) in Ryazan region, in 2016-2019, when growing spring bird rape varieties Kulta and Lipchanka. The duration of the growing season of varieties of spring bird rape in experiments was 73-91 days. The introduction of nitrogen fertilizers lengthened the growing season of the crop, compared with the control, on average, by 4-8 days. A longer growing season was noted in the wet years of research. With an increase in the level of nitrogen mineral nutrition, the flowering and ripening periods were 4–6 days longer compared with the control. Based on the material obtained, it can be argued that the most effective level of mineral nutrition for spring bird rape varieties is N180. While N180P50K50 fertilizer was applied, the maximum yield (2.03 t ha-1) was obtained from Kulta variety, N180P100K100 and N180 was implemented 2.00 and 2.15 t ha-1 yields had from Lipchanka, respectively. The influence of spring bird rape varieties on soil nutrient content changes is not as significant as the effect of fertilizers, primarily nitrogen.