02/06/2026
๐ฃ๐๐ง๐๐ข๐๐๐ก ๐ฃ๐๐๐
๐ก๐ฎ๐บ๐ฒ ๐ผ๐ณ ๐ฃ๐ฎ๐๐ต๐ผ๐ด๐ฒ๐ป: ๐๐ฆ๐ด๐ต๐ข๐ญ๐ฐ๐ต๐ช๐ฐ๐ฑ๐ด๐ช๐ด sp.
๐ง๐๐ฝ๐ฒ ๐ผ๐ณ ๐ฃ๐ฎ๐๐ต๐ผ๐ด๐ฒ๐ป: Necrotrophic plant pathogen (a fungus that kills host tissue to feed on it)
๐๐ผ๐บ๐บ๐ผ๐ป ๐๐ผ๐๐ ๐ฃ๐น๐ฎ๐ป๐๐: Rubber trees, Cacao, Coffee, Banana, Coconut, Mango, and etc.
According to Aya (2025) of the DOSTโPCAARRD Science and Technology Media Services, approximately 700,000 rubber smallholders and tappers in Mindanao depend on rubber farming as their primary source of livelihood. In the previous year, the Philippines exported rubber products valued at approximately US$131 million, with major export destinations including Malaysia, China, South Korea, Indonesia, and Vietnam, according to the Observatory of Economic Complexity (OEC), as cited by Aya (2025).
๐๐ฎ๐๐ผ๐ฟ๐ฎ๐ฏ๐น๐ฒ ๐๐ผ๐ป๐ฑ๐ถ๐๐ถ๐ผ๐ป๐:
Thrive in tropical and subtropical environments
Warm temperature (25 ยฐCโ30 ยฐC)
High relative humidity above 85%
Frequent rainfall punctuated by sunny periods
๐๐ถ๐๐ฒ๐ฎ๐๐ฒ๐ ๐๐ฎ๐๐๐ฒ๐ฑ:
Leaf defoliation
๐๐ผ๐บ๐บ๐ผ๐ป ๐ฆ๐๐บ๐ฝ๐๐ผ๐บ๐:
Leaf-spotting and blights
Lesion expansion
๐ ๐ผ๐ฑ๐ฒ ๐ผ๐ณ ๐ง๐ฟ๐ฎ๐ป๐๐บ๐ถ๐๐๐ถ๐ผ๐ป:
Airborne spores (conidia) dispersed by wind
Rain splash (splashing from rain or irrigation)
Insect vectors
๐๐ผ๐ป๐๐ฟ๐ผ๐น ๐ ๐ฒ๐ฎ๐๐๐ฟ๐ฒ๐:
Proper spacing and field sanitation (slashing, clearing, and pruning)
Water Management
Fungicide application when necessary
Biocontrol Agents
๐๐บ๐ฝ๐ฎ๐ฐ๐:
Rapid premature leaf fall (up to 80-100%)
Latex production drops by up to 50%
Massive income loss to smallholders and tappers in Mindanao
๐ฅ๐ฒ๐ณ๐ฒ๐ฟ๐ฒ๐ป๐ฐ๐ฒ๐:
Aya, R. A. M. (2025). From assessment to creating impact: Addressing the Pestalotiopsis leaf fall disease in rubber trees in Mindanao. Department of Science and Technology โ Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development (DOST-PCAARRD). https://www.pcaarrd.dost.gov.ph/index.php/quick-information-dispatch-qid-articles/from-assessment-to-creating-impact-addressing-the-pestalotiopsis-leaf-fall-disease-in-rubber-trees-in-mindanao
International Rubber Research and Development Board (IRRDB), & Rubber Research Institute of Sri Lanka (RRISL). (2023). International workshop on circular leaf spot disease (Pestalotiopsis) and other economically important diseases of rubber plantations: New directions and strategies for sustainable management. Rubber Research Institute of Sri Lanka. ISBN 978-624-5806-04-1.
Paguntalan, D. P., Aggangan, N. S., Buot, I. E., Jr., Sotto, R. C., & Pangga, I. B. (2022). Effect of AMFโcacao association on pod disease incidence in three-year-old cacao trees in an agroforest in Calauan, Laguna, Philippines. Philippine Journal of Science, 151(1), 383โ395. https://doi.org/10.56899/151.01.29