Impact on soil microbiology in mixed deciduous logged area at Huay Linthin Changwat Kanchanaburi
1993
Kannika Wongvutiyan
Study on genera and number of bacteria and fungi in soil was conducted for study on the impact on soil microbiology in mixed deciduous logged area at Huay Linthin Changwat Kanchanaburi. Samples were collected at four times during December 1990 to September 1991. The results found that selective cutting system were not affected to bacterial and fungal number, but it showed trend of microorganism number after logging. Bacterial and fungal number were increased in logged area after logging 2 yrs and decreased in logging road and logged area after logging 3 yrs, that changed was found correlated with organic matter content. In long time effect logging was deteriorated organic matter and increase pH of soil. Logging were not affected to bacterial and fungal genera because of bacterial and fungal genera were not different in each sample sites. Bacterial isolates classified to 6 genera were Bacillus, Klebsiella, Micrococcus, Pseudomonas, Sporolactobacillus. and Xanthomonas. The most bacterial genus in each sample sites was Bacillus. Fungal isolates classified to 11 genera were Absidia, Aspergillus, Circinella, Cunninghamella, Curvularia, Fusidium, Penicillium, Rhizoctonia, Rhizopus, Sclerotium and Trichoderma. The most fungal genus in each sample sites was Aspergillus.
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