Suppression of Bacterial Soft Rot on Chinese Cabbage by Calcium Fertilizer Treatment

칼슘비료 처리에 의한 배추 무름병 발생 억제

  • 김병섭 (강릉대학교 식물응용과학과) ;
  • 용영록 (강릉대학교 식물응용과학과)
  • Published : 2004.03.01


Bacterial soft rot by Erwinia carotovora subsp. carotovora is one of the diseases causing the biggest damages in Chinese cabbage cultivation. This study was conducted to evaluate on suppressive effect of calcium fertilizer to bacterial soft rot of Chinese cabbage. Seven calcium fertilizers were selected for evaluation. And screening was conducted to select effective agents for controlling bacterial soft rot. When applied by the nursery test condition using mineral oil inoculation method with Chinese cabbage, calcium hydroxide had more suppressive efficacy than any other calcium fertilizer, While nitrogen fertilizer was induced the disease, calcium hydroxide was suppressed soft rot disease in field test as well as seedling test. Treatment of calcium+nitrogen fertilizer as well as calcium only showed a significant control effect in the field experiment with Chinese cabbage 'Sanchon' in 2003.

Erwinia carotovora subsp. carotovora에 의한 배추 무름병은 배추에서 가장 큰 문제가 되고 있는 병 중 하나이다. 본 연구는 칼슘비료 시비가 배추 무름병 발생에 미치는 영향을 조사하기 위하여 실시하였다 칼슘 비료 7종을 선발하여 배추 유묘에 엽면 살포한 후, 세균현탁액과 mineral oil을 4:1로 혼합하여 배추의 중앙 기부에 10 m1 관주 접종하는 mineral oil 접종법으로 접종하였다. 배추 유묘에 엽면 살포한 결과 calcium hydroxide가 다른 calcium 비료보다 무름병 방제에 효과가 높게 나타났다. 질소 비료시비는 무름병 발생을 촉진한 반면, calcium hydroxide를 수용액으로 엽면시비할 때 유묘에서뿐 아니라 포장 시험에서도 무름병 발생을 억제하였다. Calcium과 질소를 혼합 살포할 때도 calcium 단독살포와 마찬가지로 무름병 발생을 억제하였다.



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