Association of Phytophthora palmivora bark canker and insect damage in cocoa in Papua New Guinea

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Abstract
SUMMARY: Bark canker caused by the fungus Phytophthora palmivora has caused the death of many cocoa trees over 15 years old in Papua New Guinea in recent years. Cankers are significantly associated with channels made by the larvae of bark‐damaging insects, which provide the major entry point for the pathogen. The combination of canker and insect damage may limit the economic life of cocoa to less than 15 years in affected areas.

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