Peanut common mosaic disease

Synonyms

Peanut Dwarf Virus Disease and Peanut Common Virus Disease

Harmful symptoms

The diseased plant begins to show bright veins on the top tender leaves, with lateral veins noticeably becoming lighter, wider, or faded green spots. It then develops into common symptoms of light green and green alternating flowers and leaves, with radiating green small stripes and spots along the lateral veins. The leaves narrow and shrink, and the leaf edges twist in a wavy manner. Diseases significantly affect the development of pods, forming many small and deformed fruits.

Pathogens

The pathogen is Peanut Stunt Virus, abbreviated as PSV, belonging to the cucumber mosaic virus group. The virus exists in different strains. Spherical particles with a diameter of 30nm. The passivation temperature is 55-60 ℃, the in vitro toxicity period is 3-4 days, and the dilution limit is 100-1000 times. Harmful to peanuts, kidney beans, cowpeas, long cowpeas, knife beans, soybeans, amaranth quinoa, black locust, etc.

Infection cycle

The seeds are mainly poisonous and become the primary source of infection in the field. Infected black locusts are also another primary source of infection for the disease. In the field, aphids such as bean aphids and peach aphids transmit the virus in a non persistent manner, and enter the peak of disease incidence in the later stage of peanut growth.

Occurring factors

The number of Robinia pseudoacacia forests is related to the epidemic areas of diseases, and there are a certain number of Robinia pseudoacacia forests in epidemic areas such as Tangshan in Hebei and Kaifeng in Henan. The occurrence of aphids is closely related to the prevalence of diseases. Peanuts have less rainfall in the early stages of growth, and severe drought can lead to a large occurrence of aphids and severe diseases.

Prevention and control methods

(1) Agricultural prevention and control: Select disease resistant varieties to reduce the harm of diseases. Such as Zhonghua No.1, 83-1 5007-1, etc. Select seeds in disease-free areas or transfer them from disease-free areas. The removal of black locust mosaic disease trees in peanut planting areas can effectively eliminate or reduce the initial source of disease invasion, achieving the goal of disease prevention.

Source: World Agrochemical Network