Effects of Organic Amendments on Soil Microbial Community in Red Pepper Field
2008
Park, K.C. (Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea), E-mail: [email protected] | Kim, Y.S. (Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea) | Kwon, O.H. (Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea) | Kwon, T.R. (Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea) | Park, S.G. (Gyeongsangbuk-do Agricultural Research and Extension Services, Daegu, Republic of Korea)
Diverse organic amendments available in local areas have been used to improve soil quality in red pepper field and so the need for investigating the soil chemical and biological properties changed by the organic amendments application is increasing. Soil microbial diversities were measured by phospholipid fatty acid (PLFA) and Biolog EcoPlate∨TM. Compost was most effective for improving soil chemical properties including pH, EC, total nitrogen, P, K, and Ca, and bark increased soil organic matter significantly (p=0.05). Compost increased the fatty acids indicating actinomycetes and vascular arbuscular fungi, and ratio of cy19:0/18:1w7c and monounsaturated fatty acids/saturated fatty acids in soils in PLFA analysis, Bark increased soil fungal indicators in PLFA analysis (p=0.05). Principal component analysis of Biolog EcoPlate data and PLFA differentiated the compost- and bark-amended soils from other organic matter-amended soils especially the soil incorporated with compost. More researches are needed to use bark for improving soil microbial properties because the soil chemical and microbiological properties caused by compost and bark are significantly different.
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