Quality of sunflower oil seeds in the Middle Volga region

Abstract

The results of studies on the study of six variants of sunflower cultivated by production system ExpressSun (predecessor barley), on ordinary Chernozem during 2013-2018 are presented. Research on hybrid P63LE10 showed the promise of deep loosening of the soil as the main soil tillage. It ensures, the yield of 2.2-2.5 t/ha of oilseeds after the application of fertilizers. It is established that one of the main quality indicators of oilseeds – oil content – depends on the mass of 1000 seeds, while the highest value detected on the maximum level of intensity of 51.3-51.5 g, that is 1.6-2.6 g (3,2-5,3 %) more than the rest of the studied variants. The maximum oil content is on natural fertility background – 47.8-49.2 %, which was 1.3 and 1.9 % more than in the fertilized variants. In the study of the nature of oilseeds they are revealed trends of dependence on the used means of intensification similar to the oil content of seed at a positive relationship with the crop yield (r= 0.71-0.92*). Application of mineral fertilizers in a dose NPK30 provides stabilization of productivity and quality of oil seeds in any climatic conditions year. On the basis of the obtained data they are revealed manufacturing operations that provide high productivity and quality of seeds: the fertilizer dose NPK30, deep loosening to 25-27 cm (PCH-4.5), spring harrowing (BZSS-1.0), pre-sowing cultivation (OPO-4.25), consolidation of the soil (3kksh-6), sowing (SSTV-6), the harrowing on shoots in one track (BZSS-1.0), treatment with herbicide (Express, 50g/ha).