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Effects of Amendments on the Phosphate-solubilizing Bacteria in Rice Paddy Soils  

Suh, Jang-Sun (National Academy of Agricultural Science, RDA)
Noh, Hyung-Jun (National Academy of Agricultural Science, RDA)
Kwon, Jang-Sik (National Academy of Agricultural Science, RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.41, no.5, 2008 , pp. 342-347 More about this Journal
Abstract
Phosphate soubilized by microbes can be easily absorbed by plant as the element diffuses into soil solution. The microbes related to phosphate solubilizing activity are affected by the soil amendments such as rice straw compost, and lime. This study was performed to evaluate the effect of amendments to phosphate solubilizer in rice paddy soils. Available phosphate concentration was increased with the ratio of phosphate-solubilizing bacteria to aerobic bacteria in the rice paddy soils. The ratio was high in the plots applied with lime, silicate, and rice straw compost. Phosphate-solubilizing bacteria isolated from the soil were Aquasipirillum, Arthrobacter, Bacillus, Flavobacterium, Micrococcus and Micromonospora, Pseudomonas species. The highest dominant bacterial species was Pseudomonas, and Bacillus was followed.
Keywords
Paddy soil; Phosphate-solubilizing bacteria; Compost; Lime;
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