Fruit Tree Disease & How To Prevent It
Including a fruit tree or two in your garden design can add a great deal of interest and beauty. Even in the smallest garden it is possible to buy small fruit trees or fruit trees that have been cleverly grafted together onto rootstock that ensures that it remains a manageable size. Some can even be grown in containers, which can be extremely useful, for gardens in areas wish have a cooler climate, as it means that a tree can be moved into a greenhouse during the winter months. If you choose to grow a type of fruit tree that bears pitted fruit (cherry, plums and the likes) you will need to learn a little about how to avoid disease as these trees can prove a little more susceptible than other types.
Brown Rot is rather a common disease seen on fruit, especially fruit which has fallen from the tree and been left on the ground. This fruit tree disease can be rather difficult to eradicate as it is a fungus and as such produces a very large amount of spores. These spores are incredibly small and can travel a surprising distance and once it appears on fallen fruit it can quickly spread to the main plant and will, eventually, appear on the fruit still on the tree.
Fungus grows best in damp areas that do not have good air flow. The spores of fungus land on the area and quickly establish themselves and start producing more spores in a very short space of time. One of the best ways to protect your fruit tree from fungal infection is to prune it carefully.
Fruit trees should be pruned to create an open structure so that the fresh air can flow freely throughout the leaves and branches. Not only does such pruning help reduce the risk of fungal infection it can also ensure that the sunlight reaches all parts of the tree. By ensuring that all leaves get the maximum amount of sunshine helps to make the tree stronger and more able to withstand and fight off infection and disease.
As well as pruning to improve air flow it is important to prune any areas that show symptoms of fungal infection. Place any clippings in the bin or burn them immediately. Do not allow any infected material anywhere near your fruit tree and pick up any fallen fruit regularly so that it does not stand a chance of becoming infected.
Cytospora canker is another disease that can appear on a fruit tree. Cytospora canker is another fungal disease but looks completely different to Brown Rot. Rather, it shows as soft dark patches, on branches, a callous forms and gum oozes from the bark of the tree. Commonly cytospora canker appears in old wounds which have not healed completely.
Just like the treatment for Brown Rot the answer to cytospora canker is, again, pruning. It is incredibly important that you prune a fruit tree correctly. If it is done incorrectly you are simply inviting trouble as the wound will take far longer to heal and will be more likely to become infected. If a fruit tree is badly infected by cytospora canker the only option is to prune it back hard and hope for the best. Making sure that such pruning allows for the free flow of air and light will help speed up the healing process and therefore reduce the risk of fungal infection.
Brown Rot and cytospora canker are only two of several fruit tree diseases that can become something of a nuisance to any gardener, even the professionals can find themselves struggling. However the risk of infection can be vastly reduced by following the advice above. Obviously it is extremely important that you follow other tree care rules such as ensuring that your tree is supplied with sufficient water and nutrients but with just a little effort you can help your tree to grow strong and healthy.
Good article on how to treat disease in these types of trees. By pruning trees regularly, it may open up structures for better leaf and branch airflow.