Abstract
The results of an experiment on cleaning oil-contaminated soil and accelerating the restoration of its fertility with the aid of combined biopreparations containing bacteria that degrade oil and microorganisms that can stimulate the growth and development of plants. It is shown that the introduction of bacterial mixtures reduced the oil content by 3.1–3.6 times and increased by 2-3 orders the number of basic physiological groups of soil microorganisms participating in its transformation, and also accelerated the germination of seeds (for 2 days) and the beginning (for 6–7 days) of all stages of oat development, used as a phytomeliorant. The most effective was a biopreparation consisting of a consortium of microorganisms Acinetobacter calcoaceticus IB DT-5.1/ 1 and Ochrobactrum intermedium IB DT-5.3/2 and strains of Pseudomonas koreensis IB-4 and Paenibacillus ehimensis IB 739, which, among other things, increased the mass of oat shoots in 2.3–2.6 times and their length is 54.0–77.8% compared to plants in the soil untreated with bacteria with oil.
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