Abstract
The use of biological preparations such as Phytotsid and Planryz contributes the increase of the general number of soil bacteria population by 13.0–36.1% in the case of potato variety Scarbnytsya and by 4.5–24.6% for potato variety Oberig compared with control. It also increases the number of saprophyte microflora, which compete with plant pathogens, micromycetes, and causes 1.2–1.8 times reduction in the number of soil fungi – Fusarium and Alternaria. During the application of Rovral Akvaflo the Shannon ecological index of species biodiversity is lower than during the biopreparation use. The decrease of species biodiversity was observed as well as strengthening the dominance of some species (dark pigmentation in fungi).
Highlights
The biological means of plants protection is relevant direction which has got the wide scientifically innovative development
The microbiological control results of this study suggest that the actinomycetes isolates RoN, G1P and J1N are effective microbiological agents in controlling soft rot of potato and could be considered as promising alternative to chemical products
The studying of soil microbiocenosis structure during potato cultivation resulted in determination of the total number of microorganisms which ranged within 153.4–259.2 thousands/g of soil in all variants of investigation
Summary
The biological means of plants protection is relevant direction which has got the wide scientifically innovative development These methods are alternative to chemical ones which have negative impact on the biological components of agrophytocenosis (Odum, 1983; Voznyakovskaya, 1988; Andreyuk et al, 2001; Zhuchenko, 2004; Patyka, 2005; Tikhonovich et al, 2005; Patyka et al, 2009). The active strains of microorganisms (biopreparations producers) do not cause the long-term genetic effects of human organism comparing to artificial chemically synthesized preparations
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