Growing pears, the gardener may face various troubles. Pear trees need proper care and certain weather conditions, but sometimes, even with all the rules for growing plants, they are still affected by various diseases. Often the first signs of the disease are expressed in the deformation of the leaves, changing their color, falling off. Let's consider the most probable and often manifested diseases, and also analyze which of them turn leaves black on a pear.
Bacterial burn or bacterial infection
The first reason is a bacterial infection. This is a dangerous disease of fruit trees, the pear is most affected. The disease begins to appear in spring or early summer. At first, blackness appears on the edges of young leaves, later the ends of the fruits also turn black. Infection occurs through untreated cracks, wounds when pruning with an infected tool. This is one of the reasons why pear leaves turn black. In this case, the disease begins to develop rapidly, the bacteria are carried along with the juice through the vessels of the tree, causing tissue death. curethe plant in this case is very difficult, usually they resort to felling and burning. However, you can try to save the pear, strictly adhering to the rules of treatment. Spend abundant spraying of leaves and flowers with antibiotics every five days. In addition to everything, for all subsequent pruning of trees, it is necessary to disinfect the tool in a solution of boric acid. This way you can avoid the spread of bacteria.
Scab. Defeat and treatment of the disease
The second reason why pear leaves turn black is scab. This is a fungal infection. Very often the whole pear tree is affected - flowers, leaves, fruits. After the defeat, pear leaves turn black and dry, and then fall off. The disease is dangerous, as the infection of neighboring trees occurs very quickly. Scab can be treated with antibiotics, following the instructions for their use. In this case, it is necessary to process not only the tree itself, but also the land around it. Fallen leaves are recommended to be collected and burned.
Humidity. How does it affect?
Lack of moisture can also be the reason why pear leaves turn black. Plant he alth is very dependent on weather conditions, especially humidity. If the air is too dry, then even abundant watering of the tree will not prevent the leaves from drying out and falling off. Those varieties of pears that are sensitive to dryness and dust, in order to avoid falling leaves and fruits, must be sprayed using a special method - drip.
Aphids and gall mites. The pests thatdestroy tree leaves
Another reason why pear leaves turn black is aphids and gall mites. These are parasites that feed on the juice of plant leaves, while the leaves turn black and curl up. If you expand them, you can see an aphid or a female tick. All diseased trees are treated with a suitable herbicide. You need to pickle the entire garden, and then inspect all the plants adjacent to the pear after processing, as these pests can stay in the neighboring garden, and then return to you.
