Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Control Efficacy of Brassicaceae Cover Crops against Clover Cyst Nematode, Heterodera trifolii

배추과 녹비작물의 클로버씨스트선충 방제 효과

  • Ko, Hyoung-Rai (Crop Protection Division, National Institute of Agricultural Sciences) ;
  • Kim, Se-Jong (NBagro Corp.) ;
  • Lee, Jae-Kook (Crop Protection Division, National Institute of Agricultural Sciences)
  • Received : 2020.04.20
  • Accepted : 2020.05.30
  • Published : 2020.06.30
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Abstract

To investigate the effects of Brassicaceae cover crops on clover cyst nematode, Heterodera trifolii, 10 cultivars consisting of six of oil radish and four of white mustard were planted in the nematode infected field at Jeongseon city. Two months after planting, the cover crops were plow down and incorporated into the soil using rotavator, decomposed for 1 month, then transplanted kimchi-cabbages. After 70 days, the density of eggs inside of the cyst and the number of females in the soil were examined. As a result, the reproduction rates of eggs in each plots of Adios and Anaconda cultivars, which were 0.04 and 0.02, respectively, were greatly reduced. The number of females in the plots of above two cultivars showed means at 2.5 and 3.5 per 300 ㎤ soil, which were lower than those of other plots. In addition, fresh weights of three plants in the two plots, which were 7.67 and 7.35 kg, were significantly higher than that of the control plot. Collectively, these results suggest that the two cultivars of Brassicaceae cover crops, Adios and Anaconda, could be used for reducing the cyst nematode density.

녹비작물을 이용한 선충 방제 기술 개발을 위해 클로버씨스트선충이 감염된 정선군 배추 포장에서 기름무 6품종과 백겨자 4품종의 녹비작물을 재배하였다. 2개월 후 트랙터 로터리를 이용하여 녹비작물을 토양에 환원시키고 1개월 동안 부숙시켰다. 이후 배추를 정식하고 70일이 경과한 다음 씨스트 선충에 대한 알 증식률과 배추의 생체중을 조사하였다. 그 결과, 기름무 Adios와 Anaconda 품종을 재배한 처리구의 토양에 존재하는 씨스트 내부의 알 밀도 감소율(Pf/Pi)은 각각 0.04, 0.02로 가장 낮았다. Adios와 Anaconda 처리구의 암컷의 증식수는 토양 300 ㎤당 각각 2.5마리, 3.5마리로 무처리를 비롯한 다른 처리구들보다 낮은 것으로 나타났다. 또한, 배추 3포기 생체중은 Adios와 Anaconda 처리구에서 각각 7.67 kg, 7.35 kg으로 나타나 무처리 5.64 kg보다 높았다. 본 연구결과에 따라 배추과 녹비작물인 기름무 Adios와 Anaconda 품종은 클로버씨스트선충의 친환경적인 방제 소재로 활용 가능하다고 판단된다.

Keywords

References

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