Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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The Effects of Soybean Cultivation on Soil Microorganism Activity

콩 재배가 토양 미생물 군집 활성도에 미치는 영향

  • Bak, Gyeryeong (Highland Agriculture Research Institute, National Institute of Crop Science) ;
  • Lee, Gyejun (Highland Agriculture Research Institute, National Institute of Crop Science) ;
  • Kim, Taeyoung (Highland Agriculture Research Institute, National Institute of Crop Science)
  • 백계령 (국립식량과학원 고령지농업연구소) ;
  • 이계준 (국립식량과학원 고령지농업연구소) ;
  • 김태영 (국립식량과학원 고령지농업연구소)
  • Received : 2019.04.22
  • Accepted : 2019.06.25
  • Published : 2019.06.30
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Abstract

BACKGROUND: For sustainable agriculture, there are various agricultural practices including low input. Over the last few decades high input of chemical fertilizer and compounds results in environmental pollution and deterioration of soil fertility. Soybean (Glycine max L.) is well known eco-friendly crop due to their symbionts. Soybean has a relationship with nitrogen fixation bacteria called rhizobia. In this research work, we investigated effects of soybean cultivation on soil microorganism activities. METHODS AND RESULTS: Experiments were conducted in pots and potato cultivation was used as reference. Soil chemical properties were analyzed considering soil nutrient over cropping period. For the soil microbial community analysis, dehydrogenase activity analysis (DHA) analyzed along with denaturing gradient gel electrophoresis. The results showed that higher soil organic matter in the soybean cultivation soil than in the potato cultivation soil. Available $P_2O_5$ concentration increased gradually in both pots but showed higher value in the potato cultivation soil. DHA value implying microbial activities showed higher value in the soybean cultivation soil over all cropping period. CONCLUSION: The cause of high microbial activity in the soybean cultivation soil was considered to the effects of some specific microorganisms related to soybean cultivation. Therefore, the availability of soybean cultivation for sustainable agriculture should be encouraged in terms of microorganism community activity in soil.

저투입생산환경에서 콩 재배가 토양미생물군집활성도에 미치는 영향에 대한 결과는 다음과 같다. 초기 비료 및 퇴비 투입 후 유기물은 재배기간 내내 콩을 재배한 화분이 감자를 재배한 화분보다 높게 나타났으며, 토양 중 인산은 콩을 재배한 토양에 비해 감자를 재배한 토양에서 다소 높은 경향을 보였다. DHA 값은 콩을 재배한 토양이 생육기간 전반에 걸쳐 감자를 재배한 토양보다 유의하게 높게 나타나 토양미생물 활성도가 콩을 재배한 토양에서 증가됨을 알 수 있었고, 이러한 결과는 콩을 재배한 토양의 유기물함량 증가에도 영향을 미친것으로 판단된다. DGGE로 토양미생물군집을 분석한 결과 Proteobacteria 문(phylum)에 속하는 미생물들이 공통적으로 확인되었으며, 감자를 재배한 토양이 콩을 재배한 토양보다 다양한 미생물이 동정되었다. 또한, 콩 재배 토양의 높은 토양미생물활성도는 콩 재배 시 형성되는 소수의 특정한 미생물들에 의한 영향으로 판단된다.

Keywords

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