| 31. | Bronson said the hurricanes made the canker problem worse.
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| 32. | Canker-infected trees show lesions on the leaves, stems and fruit.
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| 33. | The damage done provides a point of entry for fungal rots and canker.
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| 34. | Parsnip canker is a serious disease of this crop.
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| 35. | Butternut trees are also threatened by the butternut canker.
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| 36. | Canker causes extensive dieback and ultimately kills the tree.
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| 37. | In older cankers the pycnidia appear on the bark.
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| 38. | Citrus canker continues to be an issue of concern.
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| 39. | As TCD progresses cankers coalesce to further girdle branches greatly restricting nutrient movement.
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| 40. | They also infests rust cankers caused by " Cronartium " species.
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