Affiliation: | 1. Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan 2. Department of Soil Science, University of Lampung, Bandar Lampung, Indonesia 3. Department of Plant Pest and Diseases, University of Lampung, Bandar Lampung, Indonesia 4. Research and Development Division of PT Gunung Madu Plantations, Sumatra, Indonesia 5. Environmental Education Center, Miyagi University of Education, Sendai, Japan
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