Abstract
The introduction of Trichoderma viride spores (108 CFU per 1 cm2) essentially changed the structure of micromycetes in the soils of tree nurseries in Krasnoyarsk region. During the first 20 days, in the variants with dark gray forest soils and podzolized chernozems, the total number of fungi decreased by 3–4 and 1.5 times, respectively, as compared to that in the control plots. During the intense development of the introduced microbes, the species composition of the soil fungi changed considerably. The treatment of Scots pine seeds with metabolites of Trichoderma fungi, as well as Pseudomonas and Bacillus bacteria, in the form of water suspensions, biopreparations, and dry spores promoted an increase in the yield of seedlings and improve their morphometric parameters. At the end of the growing period, the treatment with Trichoderma and the biopreparation on its basis increased these parameters, on average, by 18–70%, and the treatment with bacteria increased the same parameters by 13–15%. The application of microbial preparations improved the phytosanitary state of the soils in the studied tree nurseries. The use of the strains of indigenous microorganisms might be feasible for solving bioremediation problems more successfully in particular regions.
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Original Russian Text © I.D. Grodnitskaya, N.D. Sorokin, 2007, published in Pochvovedenie, 2007, No. 3, pp. 359–364.
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Grodnitskaya, I.D., Sorokin, N.D. Application of microbes to the soils of Siberian tree nurseries. Eurasian Soil Sc. 40, 329–334 (2007). https://doi.org/10.1134/S106422930703012X
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DOI: https://doi.org/10.1134/S106422930703012X