1. The University of Tokyo Tanashi Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo
2. Kasama Agricultural Extension Center, Central Ibaraki Agriculture and Forestry Office
3. Forestry and Forest Products Research Institute
4. CTI Aura Co., Ltd.
5. Environmental Crop Science, Graduate School of Agricultural Science, Tohoku University
6. Central Region Agricutural Research Center, NARO