Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effect of Plant Age and Nematode Inoculation Density on Final Population of Heterodera schachtii on Chinese Cabbage

배추 묘령과 선충접종밀도가 사탕무씨스트선충의 증식에 미치는 영향

  • Kabir, Md. Faisal (Department of Ecological Science, Kyungpook National University) ;
  • Lee, Jae-Kook (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Dong Woon (Department of Ecological Science, Kyungpook National University)
  • Received : 2017.08.28
  • Accepted : 2017.11.14
  • Published : 2017.12.01
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Abstract

Sugarbeet cyst nematode (Heterodera schachtii) has recently been detected as a severe pest of Chinese cabbage fields in Korea. Two studies were performed to evaluate the effect of inoculation density of H. schachtii and plant age of Chinese cabbage on the final population of the nematodes. Chinese cabbage inoculated with high inoculation density (4 juveniles or eggs/g soil) showed significant differences in the number of cysts, females and eggs. The 40 day- old plants inoculated with high nematode densities yielded the highest nematode populations after 30 and 60 days of inoculation, compared with other plant age groups (0, 20, 30 day-old)used in the experiment. We, thus, summarize that, maximum nematode multiplication rates are made on comparatively older plants at the high nematode densities. Therefore, taking plant age into consideration at the transplanting of Chinese cabbage was recommended for the management of H. schachtii.

사탕무씨스트선충(Heterodera schachtii)은 최근 우리나라의 배추 재배지의 문제선충이다. 본 연구는 사탕무씨스트선충의 밀도와 배추의 묘령이 사탕무씨스트선충의 증식에 미치는 영향을 알아보기 위하여 수행하였다. 접종농도가 높은(4마리 유충 또는 알/g 토양) 처리에서 씨스트 수나 암컷 또는 알 수가 유의하게 높았다. 40일 묘령 배추에 고밀도 선충 접종 시 30일이나 60일 후 다른 어린 묘령 배추(파종처리, 20일묘, 30일묘)에 비하여 증식 선충 밀도가 높았다. 높은 선충 밀도 조건에 묘령이 오래 된 모종 식재 시 선충 증식율이 높기 때문에 사탕무씨스트선충 관리를 위해서는 정식 모종의 묘령 고려가 필요하다.

Keywords

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