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Contents of Soil Microbial Phospholipid Fatty Acids as Affected by Continuous Cropping of Pepper under Upland  

Hwang, Jae-Moon (Department of Horticulture and Breeding Science, Andong National Univ.)
Park, Kee-Choon (Rural Development Administration)
Kim, Su-Jung (Department of Bio & Environmental Science, Dongguk Univ.)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.43, no.6, 2010 , pp. 1012-1017 More about this Journal
Abstract
This study was carried out to investigate the effect of continuous cropping of pepper on soil microbial phospholipid fatty acids (PLFAs) under upland applied without any pesticides and chemical herbicides from 2000 to 2009. Microbial PLFAs were analysed from soils sampled in 2009. Soil microbial diversities showed PLFAs of monoplanting of pepper were distinct from those of monoplanting of garlic and interplanting of garlic and pepper by principle component 2 (PC2). Furthermore, soil microbial activity of monoplanting of pepper significantly decreased PLFAs representing as VAM-fungi, whereas it significantly increased in actinomycetes and saturated/monounsaturated PLFAs' ratio. The results drove continuous cropping of pepper would vary the microbial community and their specific activity. Soil microbial activities in continuous cropping system would depend on crop root systems.
Keywords
Continuous cropping; Pepper; Phospholipid fatty acids; Soil microbial community;
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