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Apple Scab Treatments

Apple Scab is a condition caused by ascomycete fungus– this condition affects apple trees, and while it does not lead to the death of the tree itself, it can affect both the appearance and the quality of the fruit.

Apple Scab normally starts to affect trees during the spring, when temperature and moisture levels are at optimum levels for the disease. The infection then remains through to the winter season, once the leaves and fruit have fallen from the tree.

How to Treat Apple Scab

Apple Scab should be treated with Fungicide sprays at the start of each season– Apple Scab is very difficult to manage once the initial infection has taken hold, and therefore this first step is vital.

While most Apple Scab fungicides are intended to protect the tree from the disease, there are products available as treatments once the disease has been contacted. These fungicides are often effective only in rainy, wet weather when the leaves of the tree remain wet for extended periods.

This is part of the reason that it’s so difficult to treat if not caught during the initial infection.

Signs and Symptoms of Apple Scab:

Initially, Apple Scab manifests as yellow spots on the leaves of the tree, eventually progressing to dark, olive green spots that cover both the leaves and the fruit. If the infestation is severe, spots may also appear on the stems of the leaves.

At times, spots appear to have a velvety texture, which is attributed to the growth of fungus– in severe cases, the leaves of the tree will turn yellow and fall off.