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Coconut root wilt disease

Kumari Sonali

Coconut root wilt disease:

Coconut Root Wilt Disease is in the news due to its rapid spread across major coconut-growing regions of Kerala, Tamil Nadu and Karnataka, affecting lakhs of palms.A debilitating, non-fatal disease of coconut caused by a phytoplasma (phloem-limited pathogen), leading to chronic decline and major yield loss.Infected palms often remain alive but become long-term inoculum sources, enabling continued spread through vectors.First reported over 150 years ago from Erattupetta (Kerala) and has remained a persistent endemic problem.Spread is vector-borne, and is accelerated by continuous coconut belts, wind-assisted vector movement, and rising abiotic stress (temperature extremes) plus biotic stress (new sucking pests like whiteflies) that increase palm susceptibility.Transmitted through sap-sucking insect vectors; commonly cited vectors in endemic areas include Stephanitis typica and Proutista moesta

 

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