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Sirvi Autor "Novikova, I.I." järgi

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  • Pisipilt
    Kirje
    Biological effectiveness of a new multifunctional biopesticide in the protection of organic potatoes from diseases
    (2021) Novikova, I.I.; Minin, V.B.; Titova, J.A.; Krasnobaeva, I.L.; Zaharov, A.M.; Perekopsky, A.N.
    Crop disease control is of particular importance in organic crop production, as the use of chemical pesticides is prohibited there. A new multifunctional biofungicide Kartofin was selected and used to optimize the phytosanitary state of organic potatoes ecosystems. Previously of studies indicated the prospects of using the biofungicide to control numerous fungal and bacterial diseases during the potato growing season and storage of tubers. The crop rotation field experiment was carried out in 2017–2020 at the Experimental Station of the IEEP - BRANCH OF FSAC VIM near Saint-Petersburg (59°65 N and 30°38 E). The soil of experimental plots is sod-podzolic light loamy. In the potatoes (variety Udacha) field, a 2-factor field experiment was established which studied:  the action of biofungicide Kartofin;  the effect of the compost. The experiment was established on the plots with the size 61.6 m2 each. The experiment had four replications. Three doses of the compost were used which corresponded to different levels of the potato productivity. Potatoes were treated with biofungicide at the time of planting and by foliar spray during the growing season. The combined use of compost at a dose of 4 t ha-1 and biofungcide made it possible to achieve the yield of standard tubers of 27.3–28.2 t ha-1 with their low incidence of fungal diseases. The biological effectiveness of the biofungicide Kartofin in reducing the prevalence and development of a complex of fungal diseases (alternariosis, late blight, stem form of rhizoctoniosis) on potato plants of the Udacha variety reached 82.2–89.9%.
  • Pisipilt
    Kirje
    The effectiveness of biopreparations in soft wheat cultivation and the quality assessment of the grain by the digital x-ray imaging
    (2020) Kolesnikov, L.E.; Novikova, I.I.; Popova, E.V.; Priyatkin, N.S.; Zuev, E.V.; Kolesnikova, Yu.R.; Solodyannikov, M.D.
    The main trend of modern crop production is the expansion of the use of plant protection solutions and technologies, that ensure not only effective management of the number of populations of harmful organisms, but also the production of environmentally safe agricultural products with minimal anthropogenic impact on agro-ecosystems. One of our priorities is to develop new environmentally sound polyfunctional biopreparations, that combine useful properties of microbial strains such as phytopathogen antagonists and chitosan compositions that increase disease resistance. The introscopic analysis of the seed material quality realized with the non–destructive express techniques application was used for evaluation the effectiveness of the compositions' complex influence on plants. The research studies the effectiveness of the influence of Bacillus subtilis strains and chitosan compositions, including their combined effect, on soft wheat productivity and its damage by disease agents. Data on the quality assessment of the grain using microfocus x-ray radiography and gas-discharge visualization (electrophotography) are also provided. The complex of more than 20 structural elements of wheat productivity was analysed during the research. Assessment of the plant damage intensity according to the standard criterion – the disease development, and additional phytopathological indicators was carried out. The evaluation of the grains’ introscopic characteristics was carried out by the microfocus x-ray radiography techniques combined with the digital x-ray image analysis. It is shown that the biopreparation complexes, containing B. subtilis strains and Chitosan, have a combined biological activity manifested in the optimization of wheat plants’ physiological state, increasing productivity, diseases resistance.