Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Effects of Cover Plants on Soil Biota: A Study in an Apple Orchard

사과원에서 피복식물이 토양생물상에 미치는 영향

  • Eo, Jin-U (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Kang, Seok-Beom (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Park, Kee-Choon (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Han, Kyoung-Suk (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Yi, Young-Keun (School of Bioresource Science, Andong National University)
  • 어진우 (농촌진흥청 국립원예특작과학원) ;
  • 강석범 (농촌진흥청 국립원예특작과학원) ;
  • 박기춘 (농촌진흥청 국립원예특작과학원) ;
  • 한경숙 (농촌진흥청 국립원예특작과학원) ;
  • 이영근 (안동대학교 식물의학과)
  • Received : 2010.09.01
  • Accepted : 2010.09.20
  • Published : 2010.09.30
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Abstract

We aimed to investigate the responses of soil organisms to cover plants and to provide information for the selection of proper plant species. We studied the effects of 7 cover plants, including rye, oat, rattail fescue, Chinese milk vetch, red clover, crimson clover, and hairy vetch, on soil organisms in an apple orchard. An increase in the microbial phospholipid fatty acids (PLFA) and in the number of nematodes and microarthropods in the soil under the cover plants reflects elevated activities of soil organisms. A decrease in the level of some marker PLFA, which is an indicator of environmental stress, suggests that cover plants provide favorable environments for soil organisms. The population of fungi and animals that feed on fungi increased in the soil surface under red clover. The population density of nematodes and mites increased in the soil surface under rattail fescue, and that of mites and omnivorous nematodes increased in the soil surface under Chinese milk vetch. The level of microbial PLFA in the soil surfaces under the tested cover plants was higher than that under clean culture system. These results suggest that proper selection of the cover plants can facilitate the creation of favorable environments for soil organisms.

사과원 토양의 지속적인 생산성을 위해 토양생물의 변화를 파악하는 것이 중요하므로, 피복식물 재배에 따른 미생물 PLFA 및 미소동물의 개체밀도 변화를 조사하였다. 피복식물은 두과식물인 호밀, 귀리, 들묵새와 두과식물인 자운영, 레드클로버, 크림슨클로버, 헤어리배치를 대상으로 하였다. 청경구에 비하여 피복식물을 재배하였을 때 미생물 PLFA 수치 및 미소동물이 증가하였기 때문에 청경구보다는 피복식물로 토양을 관리하는 것이 토양생물을 증가시키는데 유리할 것으로 사료된다. 미생물 PLFA 수치에서는 피복식물간 차이가 적었지만, 화본과식물 중에서는 들묵새와 두과식물 중에서는 자운영이 토양의 미소절족동물의 개체밀도를 증가시키는 효과가 비교적 큰 것으로 나타났다. 본 결과는 적절한 피복식물 선정을 통한 효과적인 유기물분해와 안정적인 양분공급을 위한 기초자료로 활용될 수 있을 것이다.

Keywords

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