Development of Cankers Caused byNectria cinnabarinaon Honey Locusts After Root Pruning

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Abstract
N. cinnabarina can cause damaging cankers on honey locusts, especially on newly transplanted trees. Root pruning was used to simulate transplanting stress on honey locusts. Trees that were root-pruned had significantly lower (P < 0.05) water potentials than unpruned trees. Cankers caused by N. cinnabarina after inoculation to twigs, branches and stems were larger on trees that were root-pruned than on unpruned trees. Uninoculated wounds closed more slowly on trees that were root-pruned than those that were not root-pruned.