1. Doctoral Program of Agricultural Sciences, Faculty of Agriculture, Universitas Padjadjaran, Sumedang 45363, Indonesia
2. Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran, Sumedang 45363, Indonesia
3. Faculty of Agriculture, Shinshu University, Nagano 390-8621, Japan
4. Undergraduate Program of Agrotechnology, Faculty of Agriculture, Universitas Padjadjaran, Sumedang 45363, Indonesia
5. Master Program of Agronomy, Faculty of Agriculture, Universitas Padjadjaran, Sumedang 45363, Indonesia