Stimulation of nitrogen fixation in soddy-podzolic soils with fungiстатья

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Дата последнего поиска статьи во внешних источниках: 31 октября 2014 г.

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[1] Stimulation of nitrogen fixation in soddy-podzolic soils with fungi / A. V. Kurakov, I. S. Prokhorov, N. V. Kostina et al. // Eurasian Soil Science. — 2006. — Vol. 39, no. 9. — P. 968–974. Stimulation of nitrogen fixation in soddy-podzolic soils is related to the hydrolytic activity of fungi decomposing plant polymers. It was found that the rate of nitrogen fixation upon the simultaneous inoculation of the strains of nitrogen-fixing bacteria Bacillus cereus var. mycoides and the cellulolytic fungus Trichoderma asperellum into a sterile soil enriched with cellulose or Jerusalem artichoke residues is two to four times higher than upon the inoculation of the strains of Bacillus cereus var. mycoides L1 only. The increase in the nitrogen fixation depended on the resistance of the substrates added into the soil to fungal hydrolysis. The biomass of the fungi decomposing plant polymers increased by two–four times. The nitrogen-fixing activity of the soil decreased when the growth of the fungi was inhibited with cycloheximide, which attested to a close correlation between the intensity of the nitrogen fixation and the decomposition of the plant polymers by fungi. The introduction of an antifungal antibiotic, together with starch or with plant residues, significantly (by 60–90%) decreased the rate of nitrogen fixation in the soll. [ DOI ]

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