Fluctuation of rhizosphere microflora in paddy rice by long-term fertilization = 동일비료 장기연용에 따른 벼 근권 미생물상의 변화

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Title
Fluctuation of rhizosphere microflora in paddy rice by long-term fertilization = 동일비료 장기연용에 따른 벼 근권 미생물상의 변화
Author(s)
Kye Sook Lee; Jae-Chan Lee; U G Kang; C Y Park; Chang-Jin Kim
Bibliographic Citation
Journal of Korean Society for Applied Biological Chemistry, vol. 49, no. 3, pp. 175-179
Publication Year
2006
Abstract
This study was carried out to investigate the change of rhizosphere microflora in paddy soils of long-term application of same fertilizer by single cropping. Treatments consisted of no fertilizer, NPK, PK, NK, NP and NPK + compost and the same fertilizer has been applied to the soil of each treatment for thirty five years. Any remarkable difference of the microbial population structure was not detected from the rhizosphere of Hwayeongbyeo and that of Hwasambyeo. However, slight difference of dominant microbial species in the rhizosphere was recognized between different fertilization practice. The bacterial population in the rhizosphere was steadily reduced over time after rice plant setting out, while actinomycetal population was increased over time. The increase of actinomycetal population was the highest in the NPK + compost treatment, suggesting the effect of organic matters in the change of actinomycetal population. As for the aerobic culturable bacterial diversity, Bacillus megaterium, B. mycoides, B. licheniformis and B. subtilis were dominants in genus Bacillus, and Streptomyces spororaveus, S. canus, S. tauricus and S. galbus in genus Streptomyces and genus Micromonospora was another dominant in actinomycetes.
Keyword
long-term fertilizationfertilizerrhizosphere microflorarice plant
ISSN
I000-0171
Publisher
Korea Soc-Assoc-Inst
Type
Article
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1. Journal Articles > Journal Articles
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