Phloem production in Huanglongbing-affected citrus trees

Researchers monitored the progression of phloem production over time in field-grown HLB-affected citrus trees to determine how the trees are capable of sustaining new growth. Results showed that new phloem cells are produced during the periodic flushes of vegetative growth and their subsequent collapse and plugging over a six-month period. The weeks immediately before and after the spring and summer flush were determined to be critically important in the management of citrus health.

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