Summer vegetables should be more protective against viral diseases

In the summer, especially in the period from June to July , the temperature will rise further, and the pests of vegetables will be more serious, which will create conditions for the transmission of poisonous pests and viral diseases. At the same time, with the arrival of the hot and rainy season, the rainfall will increase, which is the season in which the open vegetables grow faster, and it is also the season when the autumn vegetable seedlings are about to begin. Therefore, the prevention of summer vegetable virus disease is of great significance to ensure vegetable production and harvest.

Viral diseases can occur in a variety of vegetables, especially in open field vegetables, and the degree is also heavy. There are many manifestations on the symptoms. Common symptoms include leaf mosaic, streaking, shrinkage, fruit malformation, dwarfing of plants, clumping, etc., which are generally easier to identify in the field. However, if the symptoms of the symptoms are manifested, the prevention and treatment is generally poor. To this end, we must do a comprehensive prevention and control of vegetable virus diseases.

First, seed treatment. Seed-borne bacteria are an important source of crop virus diseases, such as seed-borne bacteria, which can be affected by crops at the seedling stage and have a great impact on yield. Therefore, pay attention to seed treatment before planting. Soak seeds for 10 to 20 minutes with 10% trisodium phosphate solution or 1% potassium permanganate solution before sowing to passivate the pathogen activity on the seeds.

Second, seedling management. Strengthening the management of vegetable seedlings is the key to preventing viral diseases. First, we must pay attention to the use of pest control measures, such as regular use of pesticides and silver ash film to avoid cockroaches, etc., to reduce the chance of pest transmission. The second is to take appropriate shading measures, such as using shade nets to shade, to avoid high temperature in the seedbed.

Third, chemical control In the beginning of the occurrence of vegetable virus disease, spraying drugs to prevent and cure viruses, you can choose 83 anti-agents, virus A , virus Becker and other water spray control. In the adult stage, vegetables should be strengthened to manage fertilizer and water, and cultivate strong plants to improve the resistance of plants to disease resistance and disease resistance.

(Source: Farmers Daily)