| 벼 유기재배에서 석회보르도액을 이용한 벼 잎도열병 방제 효과 |
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강범용, 김선곤, 김도익, 이용환, 최경주, 최용수 |
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| Effect of Bordeaux Mixture on Control of Rice Leaf Blast |
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Beom Ryong Kang, Seon Gon Kim, Do Ik Kim, Yong Hwan Lee, Kyong Ju Choi, Yong Soo Choi |
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| Abstract |
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Recently organic farming practice of rice has been emerged in Korea, but one of the major limiting factor is the no effective environmental-friendly agro-materials to control major plant diseases. Bordeaux mixture has been used effectively as a preventive agro-chemical. The aim of this study was to investigate efficacy of Bordeanux mixture on control of rice blast caused by Magnaporthe grisea which is one of the disruptive rice diseases in world-wide. In greenhouse experiment, pre-treatment of 6-6 type of Bordeaux mixture before inoculation of spore suspension of M. grasea showed 71% of control value. In field experiment, preventive applications of 4-8 and 6-6 types of Bordeaux mixture showed over 71% of the control value. Chemical injury on rice leaves were not found in the application concentrations of all types of Bordeaux mixture, but observed in applications of Bordeaux mixtures between 30 and 100 diluted concentrations. This results indicate Bordeaux mixture can be used as an effective environmental-friendly agro-chemical to control rice blast disease in the field. |
| Key Words:
Bordeaux mixture, Chemical injury, Control, Rice Leaf blast |
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