1Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkok, 10900 Thailand.
2Center for Advanced Studies in Tropical Natural Resources, Kasetsart University, Bangkok, 10900 Thailand.
3Major of Organic Farming Management, Faculty of Science and Technology, Thammasat University, Pathumthani, 12121 Thailand.
4School of Crop Production Technology, Institute of Agriculture Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000 Thailand.
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