Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Effect of Calcium Cyanamide on Control of Clubroot of Chinese Cabbage Caused by Plasmodiophora brassicae

석회질소에 의한 배추뿌리혹병 방제효과

  • Kim, Jeom-Soon (National Institute of Highland Agriculture, Rural Development Administration) ;
  • Lee, Jeong-Tae (National Institute of Highland Agriculture, Rural Development Administration) ;
  • Lee, Gye-Jun (National Institute of Highland Agriculture, Rural Development Administration)
  • Published : 2006.12.01
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Abstract

The effect of calcium cyanamide($CaCN_2$) on suppression of clubroot of Chinese cabbage was evaluated in the fields infested with Plasmodiophora brassicae at National Institute of Highland Agriculture, Pyeongchang, Korea, from 2002 to 2003. Calcium cyanamide was found to be more effective in reducing disease severity than flusulfamide dust powder. The optimal dosage of calcium cyanamide for control of clubroot of Chinese cabbage was 61 kg/10a. When calcium cyanamide was incorporated into soil at 5, 10, 15 and 20 days before planting(DBP), maximum disease suppression was obtained in the plot with calcium cyanamide, applied 5DBP. The fertilizer property of calcium cyanamide as a nitrogen fertilizer was also investigated by comparing with urea on cv. CR Gangta, a resistant variety of Chinese cabbage. The nitrogen uptake in calcium cyanamide treatment(17.6 kg/10a), was not significantly different from that of urea(17.8 kg/10a). These results indicated that calcium cyanamide could be used as a soil disinfectant as well as a nitrogen fertilizer.

국내 배추 재배지에서 큰 문제가 되고 있는 뿌리혹병을 석회질소로 방제하는 방법을 구명하기 위하여, 고령지농업연구소의 뿌리혹병 다발포장에서 $2002{\sim}2003 $년에 걸쳐 시험을 실시하였다. 석회질소의 처리량은 배추에 대한 질소질 비료 기비량과 같은 61 kg/10a처리할 때, 33%의 발병도를 보여 대조약제인 후루설파마이드의 77%에 비해 우수한 방제 효과를 보였다. 석회질소를 배추 정식 전 5, 10, 15, 20일에 처리한 결과, 정식 5일전 처리가 48%의 발병도를 보여 후루설파마이드 분제의 67%에 비해 발병 억제 효과가 인정되었다. 석회질소와 요소비료를 이용하여 재배한 배추의 수확기 질소 흡수량은 요소가 17.8kg/10a, 석회질소가 17.6kg/10a으로 유의성이 없었다. 이와 같은 결과로 볼 때 석회질소는 질소질 비료로서 뿐만 아니라 배추뿌리혹병을 방제하기 위한 화학약제의 대용으로서 사용될 수 있을 것으로 생각된다.

Keywords

References

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