Symptoms: the disease mainly occurs on the leaves. The disease spots are usually polygonal. The color is from yellow brown to dark red brown. In the later stage, small black brown mildew spots grow. In the later stage, the leaves will be covered with disease spots, which may be connected into one piece, eventually leading to the leaves falling off.
Prevention and control: in autumn, the diseased branches and leaves need to be removed, and then they need to be concentrated and burned, so as to reduce the source of the disease, and also need spraying treatment.
Symptoms: after infection with this disease, it will turn yellow from the top part of the branch, and it will also fall off. It will gradually expand from one branch to the whole plant, causing the whole plant to die.
Control: enhance the growth of trees, improve the ability of disease resistance. Also cut off dead sick branches and burn them in a centralized way. When the disease can be sprayed carbendazim.
Symptoms: the larva will tear the leaves and damage the cortex of the fruit, leading to the death of the whole plant.
Prevention and control: it is necessary to check the growth of Bauhinia frequently. When it is found that there is a insect sac hanging on the tree, it needs to be removed in time, and then concentrated to burn. In larval stage, DDVP, Phoxim and trichlorfon can be sprayed.
