Eggplant virus disease is one of the common diseases of eggplant, which can occur in open field and greenhouse cultivation, but it is more common in open field cultivation, which causes great damage to eggplant production.
Three types of symptoms common to viral diseases:
1. Mosaic type. The whole plant was onset, the leaves were yellow-green, and mottled mosaics were formed. The old leaves had round or irregular dark green markings, and the heart was slightly yellow.
2. Necrotic spot type. The upper leaves of the diseased plants showed local invasive purple-brown necrotic spots, with a size of 0.5-1mm, sometimes with punctate necrosis and leaf shrinkage, showing atrophic atrophy;
3. Large wheel type. The leaves produce round spots consisting of yellow dots, sometimes with necrotic spots.
Disease characteristics: high temperature and drought, extensive management, continuous cropping, and surrounding planting wheat and other crops that affect many crops, the incidence of aphids is very serious. The virus relies mainly on the transmission of poisons such as Myzus persicae and soybean meal, and can also be transmitted via the juice.
Comprehensive prevention measures are as follows:
1 Select disease-resistant varieties according to cultivation times.
2 Timely avoidance and flood prevention, and the field can be hung and silver gray.
3 In the course of field operations such as pruning, use 10% phosphoric acid to wash the tools and hands in time to prevent the spread of juice.
4 Strengthen fertilizer and water management and remove weeds in the field.
5 spraying control. Spray 20% toxic nemesis (virus a) wettable powder 400-500 times, antitoxic agent 1 300 times, potassium permanganate 1000 times. Spray once every 7-10d and spray 3 times.

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