Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Disease Control Efficacy of Chitosan Preparations against Tomato Leaf Mold

토마토 잎곰팡이병에 대한 키토산 제제의 방제 효과

  • Chang, Tae-Hyun (Dept. of Plant Resources and Environment, College of Ecology & Environmental Sciences, Kyungpook National University)
  • 장태현 (경북대학교 생태환경대학 식물자원환경)
  • Published : 2009.12.01
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Abstract

Chitosan has an antifungal activity and is widely used for control of various plant disease and plants growth in the field in Korea. Disease control efficacy of two preparations (SH-1, SH-2) of mixtures of high and low (chitooligosaccharide) molecular weight chitosan compounds against tomato leaf mold caused by Fulvia fulva was investigated under plastic greenhouse conditions. Both SH-1 and SH-2 formulations displayed potent disease control activity in two experiments. The protective activity of both preparations was comparable to synthetic thiophanate-M. The persistence activity of the formulations was sustained until 21 days after application. Effective concentration of the chtosan compounds for disease control was 1,200 mg a.i./L. In pot tests, chitosan preparations, at a concentration of 600 mg a.i./L, promoted plants growth. These results indicate that the chitosan preparations have a potential as an eco-friendly natural fungicide for the control of tomato leaf mold and plant growth regulator.

항균활성을 가진 키토산은 우리나라 포장에서 다양한 식물 방제와 식물 생장을 위해 넓게 사용하고 있다. 고분자와 저분자(키토올리고당)의 키토산 화합물을 혼합한 2가지 제제(SH-1, SH-2)에 대한 병 방제 효과를 Fulvia fulva에 의해 발생하는 토마토 잎곰팡이병에 대하여 비닐하우스에서 조사하였다. 두 제제(SH-1, SH-2)는 두 번의 포장 시험에서 병 방제에 대한 활성을 나타내었다. 두 제제의 예방적인 병 방제에 대한 활성은 합성농약인 thiophanate-M과 비교하여 수행하였다. 병 방제를 위한 제형의 활성유지는 살포 후 21일까지 지속되었다. 병 방제를 위한 키토산의 효과적인 농도는 1,200 mg a.i/L였다. 포트시험에서 키토산 제제는 600 mg a.i/L 농도에서 식물생장이 증진되었다. 결과적으로 키토산 제제는 토마토 잎곰팡이병방제를 위한 친환경제제로서 활력을 가지며 식물생장도 촉진하였다.

Keywords

References

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