The Latest Control Methods for Potato Mosaic Virus
Potato mosaic virus is one of the most common diseases in the process of potato cultivation. In severe cases, it can cause massive reductions in potato yield and bring huge economic losses to farmers, so controlling mosaic virus brooks no delay. So how should mosaic virus be controlled? Let us take a look together.
1. Causes of the disease
Mosaic virus, as the name suggests, is a disease that harms the leaves. Generally, after a potato is infected, its leaves will be slightly shriveled, and the leaf edges will be wavy, somewhat like they have been scalded. In the later stages of the disease, the entire infected plant will bend outward in a spreading manner, the leaves will also spread out and become glossy, and parts of the leaves will show slight chlorosis. These chlorotic spots appear alternately, hence the name mosaic virus. The cause of mosaic virus is mostly that the seed tubers carry the virus infection, but virus-carrying seed tubers are no different from normal seed tubers, so the disease is relatively common.
2. Symptoms of the disease
According to its external symptoms, mosaic virus can be divided into common mosaic virus, streak mosaic virus, and compound mosaic virus, and their onset is different in each case. When common mosaic virus occurs, the leaves shrink and become shriveled, and green and pale yellow mottling appears along the leaf veins; streak mosaic virus, also known as severe mosaic virus, is characterized by mottled mosaic or necrotic spots on the leaves, with necrosis of the leaf veins in the later stages, and in severe cases brown streaks also appear on the stems, and the leaves wilt and necrose. Compound mosaic virus is caused by mixed infection of common mosaic virus and streak mosaic virus. When it occurs, the plant becomes shriveled, the leaves become smaller, the leaves bend downward, the plant is short and stunted, generally does not flower, mostly dies early, and has fewer tubers.
3. Control methods
To control mosaic virus, you must understand its modes of transmission and characteristics so as to achieve a targeted effect. First, when planting, choose excellent virus-free varieties, sow at a suitable time, and try to avoid periods of high temperature, which can greatly reduce the chance of infection. At the same time, aphids must be well controlled. This disease is mainly spread by aphids, so once aphids appear, chemical control must be carried out as early as possible to cut off their transmission route. Imidacloprid or menazon can be mixed with water and sprayed for control, with good results.
The above is an introduction to the control methods for potato mosaic virus. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.