Incidence, host range, and control of white root rot disease of rubber (Hevea brasiliensis
) in the Philippines
Naomi G Tangonan & Jasmin A Pecho
University Professor/Plant Pathologist and Research Assistant, respectively, Philippine Rubber Research Center, University of Southern Mindanao, Kabacan, Cotabato, Philippines Tel/Fax (63-64) 248-2610
This project was funded by the Department of Agriculture-Bureau of Agricultural Research (DA-BAR), Quezon City, Philippines through its Plantation Crops and Crop Protection Networks.
Major rubber (Hevea brasiliensis
Muell. Arg.) growing provinces in Mindanao, Philippines (Agusan Sur, Basilan, Bukidnon, Cotabato, Davao, Sarangani, and Zamboanga del Norte, and Sibugay) were surveyed for incidence and severity of white root rot (WRR) disease caused by Rigidoporus lignosus
Synthetic fungicides applied as curative against white root rot disease significantly reduced disease severity of rubber trees for six months.
Three basidomycetous fungi namely, bracket fungus 1 (BF1), 2 wild mushrooms (WM1 & WM2), and T. harzianum were found as potential biological control agents against R. lignosus causing white root rot disease of rubber. Twenty (20) hosts of Rigidoporus lignosus causing white root rot were noted.
Key words: rubber diseases, white root rot, basidiomycetous fungi, botanical extracts, biological control