Growing pears, the gardener can 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, a change in their color, falling off. We will consider the most probable and often manifested diseases, and also we will analyze which of them leaves turn black on 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 manifest in spring or early summer. First, young leaves appear black at the edges, later the ends of the fruits also blacken. 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, bacteria spread along with the juice along the vessels of the tree, causing tissue death. In this case, it is very difficult to cure the plant, they usually resort to cutting and burn. However, you can try to save the pear by strictly adhering to the rules of treatment. Spend abundant spraying of leaves and flowers with antibiotics every five days. In addition to everything, with all subsequent pruning of trees, it is necessary to disinfect the tool in a solution of boric acid. So you can avoid the spread of bacteria.
Scab. The defeat and treatment of the disease
The second reason why pear leaves turn black is scab. This is a fungal infection. It often affects the whole pear tree - flowers, leaves, fruits. After the defeat, the leaves of the pear 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 use. In this case, it is necessary to cultivate not only the tree itself, but also the earth around it. Fallen leaves are recommended to collect and burn.
Air humidity. How does it affect?
Insufficient humidity can also be the reason why the leaves of a pear turn black. Plant health is very dependent on weather conditions, especially moisture. If the air is too dry, even abundant watering of the tree will not prevent the leaves from drying out and falling. 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. Pests that destroy 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 with a tube. If you expand them, you can see the aphid or female tick. All diseased trees are treated with a suitable herbicide. It is necessary to pickle the whole garden, and then examine after processing all the plants adjacent to the pear, as I can stay in the neighboring garden and then return to you.