The influence of nitrogen on colonization by microorganisms of barley root region
1994
Polyanskaya, L.M. | Orazova, M.Kh. | Sveshnikova, A.A. | Zvyagintsev, D.G.
The dynamic of various groups of microorganisms in the rhizosphere and rhizoplane of barley with addition and without addition of nitrogen was studied. It was shown that the dynamics of bacteria, actinomycetes and fungi in the rhizophere treatment plant (with nitrogen) is the same as the dynamic of their microorganisms in the rhizosphere control plant (without nitrogen). Increase of numerous microorganisms in the rhizoplane treatment plant at the beginning of experiment reflects that nitrogen is extremely deficient resource because of the competition between plant and microorganisms in the rhizoplane. At the beginning vegetation treated plants grow more slowly then control ones; it may be explained by intensive colonization of root by microorganisms. But by the end of the experiment the plants grow better then in the control. The fact of increase in microorganisms amount in rhizoplane of barley in the presence of additional nitrogen helps in the problem of menagement both beneficial and harmful populations of microorganisms including phytopathogens
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