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Microbial changes in clover rhizosphere after foliar and soil application of cobalt

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Abstract

Application of cobalt(II) nitrate to the leaves of red clover (Trifolium pratense L.) resulted in a pronounced increase of dry weight and the number of root nodules. Counts of bacteria in the rhizosphere, content of ammonia and production of carbon dioxide m rhizosphere soil were also higher, whereas the content of nitrates decreased Differences m the counts of bacteria, aotmomycetes, Azotobaoter, anaerobic bacteria and cellulose decomposing bacteria m the rhizosphere of control and treated plants were not directly related to the way of application of cobalt. GeneraPenicillium, Fusarium andTrichoderma predominated among fungi. The relative occurrence of pemcillia was higher after the application of cobalt, the incidence of fusaria was lower. The effects of foliar and soil application of cobalt on rhizosphere microflora were not identical.

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  1. Department of Soil Microbiology, Institute of Microbiology, Czechoslovak Academy of Sciences, 142 20, Prague 4

    J. Vraný

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  1. J. Vraný
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Vraný, J. Microbial changes in clover rhizosphere after foliar and soil application of cobalt. Folia Microbiol 23, 236–242 (1978). https://doi.org/10.1007/BF02876585

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  • DOI: https://doi.org/10.1007/BF02876585

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