Common diseases and insect pests of pomegranate tree

Pomegranate tree is a kind of fruit tree with many diseases and insect pests. Every year, farmers will suffer some yield reduction because of these diseases, and serious ones will lead to no harvest. Let's learn about some common diseases of pomegranate trees together with Xiaobian, so that we can judge the varieties of pomegranate trees when they are sick, so as to achieve post-disaster prevention and treatment.

1. Pomegranate stem window moth

This is a highly harmful disease and insect in the larval stage. The mother lays eggs on the branches of the pomegranate tree, and its larvae are fed with the sap of the pomegranate branch, which seriously affects the growth of the pomegranate tree. Generally, around July belongs to the high incidence period. The initial manifestation of the disease is that the death rate of the new branches is very high, and the old branches will die when it is serious. In the later stage of the disease, the larvae will invade the trunk of the tree, resulting in the wilting of the whole plant. So farmers should pay attention to pomegranate stem window moth if they find that there is a lot of branch death rate in that year. It is recommended to clean up the old and dead branches in time, and the plants can be sprayed with trichlorfon after the disease.

2. Pomegranate dry rot

This is a disease caused by bacteria, the onset period is throughout the flowering stage and fruiting stage. And the onset time is mostly concentrated in the rainy season and the subsequent period of high humidity. In the initial stage, brown spots appear in the Corolla of flowers or fruits, and slowly decay spread, and finally spread all over the whole fruit and flowers. The prominent symptom of florescence is the serious drop of flowers, and most flowers are obviously black. The outstanding performance in the fruit stage is the black rot of a large number of fruits, and there is the phenomenon of fruit drop. You can try to treat it with carbendazim gel suspension.

3. Black spot

There are more black spots on the leaves of pomegranate trees that we see every day, and the leaves will wither and fall very quickly for a period of time after the black spots appear, which is basically caused by black spot. When it is serious, it will cause a large number of leaves to fall, pomegranate trees can no longer carry out photosynthesis, and finally slowly wither. After discovering such a situation, it is best to treat it in time. Carbendazim is a good choice.

4. Scab

Scab is a disease that often occurs on pomegranate. The concentrated performance is that there will be some scar-like spots on the surface of the pomegranate, and then it will slowly spread, the location of the disease will further dry down, and finally the whole fruit will become a dry tumor. The time of onset is concentrated in the early stage of the result, and the disease is obvious. After general discovery, it is recommended to directly remove the fruit, reduce the pathogen, and finally use carbendazim powder for treatment.

The above are common pomegranate diseases and insect pests, these diseases and insect pests are a greater threat to pomegranate trees. In general, the prevention of diseases is to reduce the risk of disease by reducing pathogens, so farmers should clean up the residual branches of fruit trees after harvest and bring them out of the plantation.