Green mass yield of spring rape hybrids in the european north of the Russian Federation

Productive indicators of spring rape hybrids of Joy KVS, Jerome and Jazz KVS foreign selection have been studied on the experimental field of the Northwestern Research Institute of Dairy and Grassland Farming named after A.S. Emel’yanov, a separate division of the Vologda Scientific Center of the Russian Academy of Sciences. The researchers have used mineral fertilizers, carried out dry inoculation of seeds and modified mineral fertilizers with a preparation based on Ch-13 strain of the gram-positive spore-forming Bacillus subtilis bacterium, which ensures the highest yielding capacity of spring rape, improved conditions for seedling germination, and a richer plant biomass accumulation. The hybrid varieties of spring rape have yielded 13.1-19.8 tons of green mass, 2.52-4.13 tons of dry mass per 1 ha, 2.45-3.77 thousand feed units, 0.23-0.44 tons of digestible protein and 27.8-44.1 GJ of metabolic energy.