Influence of humic fertilizer and mineral fertilizers doses on the productivity of spring rape

The purpose of the research is to identify the productivity of spring rape hybrids cultivated using Clearfield technology and Ecorost humic fertilizer at various levels of mineral nutrition in the Ryazan region. Clearfield technology is becoming very popular among agricultural producers, which consists in the complex application of the herbicide Nupasaran and hybrids resistant to this herbicide. The research was conducted in 2018-2019 on dark gray forest soil of the experimental agrotechnological station of the Ryazan State Agrotechnological University named after Р.A. Kostychev of the Ryazan region. Agrotechnics of spring rapeseed was implemented in accordance with the recommendations adopted in the region. The experiments have shown that a high effect from the use of Ecorost biofertilizer is recorded on variants with Cultus CL, Cebra CL. The maximum increase in seeds was observed when treating them with Ecorost on the variants Kultus KL, N180 and Tsebra KL, N90 (+ 1.5 C / ha). The most effective doses of fertilizers should be considered nitrogen ones - N90, N180. Application of mineral fertilizers for spring rape should be differentiated taking into account the nutrient supply in the soil. The maximum oil content was observed on the variants with the action of N90P60K60 + HUMATE Ecorost for hybrids Cultus CL (46.0%), Cebra CL (44.9), Curry CL (44.1%), and on N180P120K60 + humate Ecorost (44.7%). The yield of vegetable oil depended mainly on seed productivity. In general, as the results of the research show, the cultivation of spring rape using Clearfield technology with the complex application of the herbicide Nupasaran and herbicide-resistant hybrids Cultus CL, Cebra CL, Curry CL, Cyclus CL is economically feasible, the profitability in the experiment was 85.0-106.5%.