Relationship of Topography and Microbial Community from Paddy Soils in Gyeongnam Province

Lee, Young Han; Ahn, Byung-Koo; Sonn, Yeon-Kyu

doi:10.7745/kjssf.2011.44.6.1158

Korean Journal of Soil Science and Fertilizer

2011

DOI: 10.7745/kjssf.2011.44.6.1158

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Relationship of Topography and Microbial Community from Paddy Soils in Gyeongnam Province

Young Han Lee¹,

Byung-Koo Ahn²,

Yeon-Kyu Sonn³

Abstract: The present study was aimed to evaluate the soil microbial communities by fatty acid methyl ester (FAME) method in paddy soils at 20 sites in Gyeongnam Province. The soil microbial biomass carbon content of fan and valley 1,266 mg kg -1 was higher than alluvial plain 578 mg kg -1 (p<0.05). In addition, The dehydrogenase activity of fan and valley 204 ㎍ TPF g -1 24h -1 was higher than alluvial plain 93 ㎍ TPF g -1 24h -1 (p<0.05). The communities of total bacteria and Gram-negative bacteria in the fan and valley… Show more

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Cited by 2 publications

References 21 publications

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The Relationship between Microbial Characteristics and Glomalin Concentrations in Paddy Soils of Gyeongnam Province

Lee¹,

Kim²,

Ok³

2012

Korean Journal of Soil Science and Fertilizer

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Glomalin-related soil protein has been suggested as an enhancer for soil stability by promoting the aggregation. In this study, we examined the concentrations of glomalin and characteristics of microbial community in 20 paddy soils sampled from Gyeongnam Province. Total soil glomalin as glomalin-related soil protein (GRSP) had a significant positive correlation with soil organic matter (p<0.01) and soil dehydrogenase activity (p<0.01). The concentration of GRSP significantly correlated to soil microbial biomass carbon (p<0.001) and the total bacterial community (p<0.01) in paddy soils. In addition, the GRSP had a significant positive correlation with gram-negative bacteria community (p<0.05) and ratio of cy19:0 to 18:1ω7c (p<0.05) in paddy soils. In conclusion, the concentration of GRSP could be an indicator of soil health that simplify the inspection steps for sustainable agriculture in paddy soils.

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The Relationship between Microbial Characteristics and Glomalin Concentrations in Paddy Soils of Gyeongnam Province

Lee¹,

Kim²,

Ok³

2012

Korean Journal of Soil Science and Fertilizer

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Effect of Defective Onion Extract on the Onion Productivity by Organic Farming

Lee¹,

sangdae²,

Lee³

et al. 2013

Korean Journal of Soil Science and Fertilizer

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This study evaluated the close crop recycling method by using the extract from defective onions. The mixture of the diluted extract (1/500) and nutrients was applied seven times on the onion leaves without spilling it onto the field. The yield and quality of the onions produced by this method (recycle) were compared to those grown organically (control) and conventionally (normal). The yield from the recycling field was increased significantly by 9% compared to that of the control field, while it was decreased by 11% compared to the normal field (p < 0.05). This lower yield was explained by the differences of the mulching vinyl and the fertilizers between the treatments which effect the onion growth during the winter. The content of quercetin in the onions from the recycling filed was increased significantly by 34% and 44% compared to those of the control and normal field, respectively (p < 0.05). It seemed that minerals and biologically active substances in the defective onion extract were effective in increasing the onion growth. In terms of soil microbial biomass, arbuscular mycorrhizal fungi was increased significantly in the recycle field by 40.1% and 30.6% compared to those of the control and normal fields, respectively (p < 0.05). On the other hand, microbial stress (cy19:0/18:1w7c) was decreased in the recycle field by 21.0% and 14.1% compared to those of the control and normal fields, respectively.

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Relationship of Topography and Microbial Community from Paddy Soils in Gyeongnam Province

Cited by 2 publications

References 21 publications

The Relationship between Microbial Characteristics and Glomalin Concentrations in Paddy Soils of Gyeongnam Province

The Relationship between Microbial Characteristics and Glomalin Concentrations in Paddy Soils of Gyeongnam Province

Effect of Defective Onion Extract on the Onion Productivity by Organic Farming

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