science-review.ru
Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454
ISSN 2500-3399
ПИ №ФС77-57454
EFFECTS OF WEATHER ON FLUCTUATIONS OF MICROBIAL DEGRADATION OF PESTICIDES IN SOIL AT THE BIOREMEDIATION BY MICROORGANISMS
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Results of effectiveness research method of cleaning soil from pesticide toxicity in forest nurseries due the cooperative action of microorganisms in different by rainfall ability years with description of fluctuations major taxonomic groups of microorganisms are presented. Researching was carried out on the basis of small plot experiments in forest nursery. Influence of fluctuation on microbial degradation of pesticides and their submission for three types of forest litter: birch, pine and mixed (taking from forest stand with different species) was investigated. Control plots were without making forest litter. The efficiency of pesticides decomposition assessed by the exit of pine seedlings normal phenotype. Also studied the activity of catalase and number of microorganisms. The experiment was conducted in years different by the hydrological conditions . It is shown that in a well provided rainfall year the addition the forest litter with saprophytes to the soil contaminated by pesticides, has a positive effect on seedlings, regardless of stand composition . Under unfavorable conditions for microbial activity the destruction of pesticides was not occur, as evidenced by the absence of differences with control plots by number of the seedlings with normal phenotype. This changes the composition microbocenosis: reduced number of saprophytic bacteria capable of degrading complex organic compounds.