Short-term Effects of Cultivars and Compost on Soil Microbial Activities and Diversities in Red Pepper Field
2008
Park, K.C. (Gyeongsangbuk-do Agricultural Research and Extension Service, Daegu, Republic of Korea), E-mail: [email protected] | Kwon, T.R. (Gyeongsangbuk-do Agricultural Research and Extension Service, Daegu, Republic of Korea) | Jang, K.S. (Gyeongsangbuk-do Agricultural Research and Extension Service, Daegu, Republic of Korea) | Kim, Y.S. (Gyeongsangbuk-do Agricultural Research and Extension Service, Daegu, Republic of Korea)
A field experiment was conducted to investigate the influence of cultivars and compost on soil microbial activities and diversities in a red pepper-grown field. Compost was applied with 0, 30, and 60M/T ha-¹ in April and then red pepper seedlings of "Yong-go 4" and "Koeun" were transplanted in May 2007. Soil samples were collected in early August 2007. Measurement of microbial activities was based on a dehydrogenase assay and a fluorescein diacetate hydrolysis. Soil microbial community was characterized with Biolog EcoPlate™ and phospholipid fatty acid (PLFA). Red pepper cultivars did not differentiate the selected soil chemical and microbial properties. Soil pH and soil microbial community changed by amending the soil with 30 and 60 M/T ha-¹ of compost, and the soil organic matter and potassium content, and soil microbial activities increased in soils amended with 60 M/T ha-¹ of compost. Red pepper cultivar induced a little different soil chemical properties and microbial activity in soils amended with 60 M/T ha-¹ of compost even though significant differences were not found in those properties. In conclusion the effects of compost on soil chemical and microbial properties were much higher than red pepper cultivars in short-term period but the effects of red pepper cultivars should be investigated in long-term field test.
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