Causes and Control methods of Potato virus Disease

In potato planting, growers are most worried about encountering diseases and insect pests. Once they are not manipulated immediately, the rapid spread will not only limit production, but also continue to lose harvest. Potato virus disease is one of the key diseases and insect pests in potato production at the present stage, which can be seriously occurred in most potato growing areas in China. Now I would like to introduce to everyone in detail the causes and control methods of potato virus disease.

The cause of Potato virus Disease

Virus infection is the key cause of potato virus disease. the key ways of virus infection are contact transmission, insect medium transmission, seed potato transmission and soil transmission. Virus-carrying seed potato and * host are the primary infection sources, and aphids are the key to spreading. In addition, friction, agricultural machinery, people and animals, and mouthparts insects can also transmit virus. The standard deviation of cultivation techniques and the occurrence of aphids make a lot of money and serious disease. in addition, the disease resistance and planting strategies are harmful to the production level of the disease.

Prevention and Control of Potato virus Disease

1. Non-toxic seed potato

Before planting potatoes, we must strictly carry out the selection and inspection of potato seeds in accordance with the regulations, so as to prevent the emergence of potato seeds containing viruses, in which only pathogens can be completely eliminated. in order to prevent the harm caused by the virus disease to the growth and development of the potato main stem.

2. Planting management methods.

High border concave ditch, secret recipe to fertilize, carry out shallow irrigation, immediately cultivate * and pull out diseased plants, apply medicine to control aphids, eliminate weeds and other countermeasures to reduce the incidence of the disease. It is best to select the land with no pollutants, high dry and flat terrain, rich quality, rich soil organic matter and excellent lifting and irrigation as commercial land for production and manufacturing.

3. Planting mode

Summer sowing is carried out in one season to produce tubers in wet and cold seasons to improve their resistance to virus. in the second season, mature species are used in spring, plastic film mulch is planted, early sowing and early harvest, moderate late sowing and early harvest in autumn, and slow down the incidence of disease.

4. Aphid control

The key to potato virus disease is the spread of aphids and planthoppers, which can be controlled immediately with 25% thiazinone water dispersible granules or 5% acetamiprid EC before aphids and planthoppers migrate.

5. Drug prevention and treatment

For the drug control of potato virus disease, 1 mu can use 2% Ningnanmycin powder 20ml, or 5% aminooligosaccharide powder 10ml, or 30% toxic fluorophosphate wettable powder 100g with water 30kg to carry out sprayer control, and then carry out sprayer control after 5-7 days, and it is best to replace the above drugs.

The production of potato virus disease is generally limited to 20%, 50%, and more than 80%, which is more serious. Potato farmers should attach great importance to it. When planting potatoes, we can carry out in accordance with the above way, reasonable prevention and control of potato virus disease.