1. Tropical Phytonematology Laboratory, Institute of Weed Science, Entomology and Plant Pathology, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines
2. Weed Ecology and Biology Laboratory, Institute of Weed Science, Entomology and Plant Pathology, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines