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Information × Registration Number 0221U100682, 0119U100428 , R & D reports Title To develop agrotechnical measures to increase the sunflower performance due to optimization of mineral nutrition in combination with microbiological agents for the eastern forest-steppe of Ukraine popup.stage_title Head Hutianskyi Roman A., Кандидат сільськогосподарських наук Registration Date 08-01-2021 Organization Plant Production Institute nd. a. V. Ya. Yuriev popup.description2 Study object - soil, fertilizers, sunflowers, hybrids, cultivation technologies. Purpose - to develop effective measures for increasing the sunflower performance on the basis of optimal combinations of mineral nutrition and biologicals, which will ensure the activation of natural biological processes in soil. Methods - field and laboratory. Results and Novelty: Responses of new released and promising sunflower hybrids, which are resistant to lodging, shedding, with high drought resistance, complex resistance to major diseases in relation to growing conditions, have been studied. It was found that in early sowing in a crop rotation (without fertilizers), of hybrids, oil hybrid Platon gave a higher yield, and hybrids Zlatson and Platon gave high yields when fertilized with N30P30K30 dring basic tillage. Optimally and late-sown hybrid Draiv gave good yields with both nutrition variants. The best sowing rate for hybrid Draiv is 50,000 seeds/ha without fertilization, and 40,000, 50,000 or 60,000 seeds/ha with N30P30K30. As to hybrid Zlatson, the best seeding rate is 50,000 seeds/ha with both fertilization variants. Of the confectionery hybrids, early and optimally sown hybrid Kosmos gave a high yield. As to hybrid Hudvin, the highest efficiency of mineral fertilization was with a seeding rate of 25,000 seeds/ha. Biological Sclerocide for soil spraying (3.0 L/ha) was most effective without fertilization. With N30P30K30, Sclerocide (3.0 L/ha; tillage), or Sclerocide (5.0 L/ha; tillage), or Sclerocide (3.0 L/ha; tillage + 0.5 L/ha; vegetation), or Sclerocide (0.5 L/ha; vegetation0 was used. "Biologized technology of sunflower cultivation with bacterial agents and taking into account the agrobiological principles of yield formation" has been developed and tested on 42.0 hectares. It is recommended for using on farms of different forms of ownership in Ukraine Product Description popup.authors Hlubokyi Oleksandr M. Kostromitin Viktor M. Sheliakin Oleksii V. popup.nrat_date 2021-03-17 Close