What should I do after cantaloupe gets vine blight?

The fruits of cantaloupes and melons are fleshy, with many chambers and seeds, much like berries, but the receptacles of these fruits heal with the exocarp and often form a thick exocarp, which is specially called "melon and fruit" in classification. Cantaloupe is a typical example.

Symptoms of cantaloupe after vine blight:

The main harm to melon vines, the main vine side vines are easy to occur, the disease site is often near the base of the plant stem. The disease spot begins to show light yellow near the node, oil-soaked spot, slightly sunken, oval to fusiform, the disease part is easy to crack, and secretes yellowish brown colloid, which is reddish brown or black block after drying. In the later stage of growth, the disease part gradually dried up and sunken, showing grayish white, with small black spots scattered on the surface. Leaves and fruits can also be harmed, the disease spot on the leaf is dark brown, round or irregular, there are obvious concentric wheel lines on the leaf edge, there are small black spots on the old disease spot, and the disease leaf is dry and star-shaped rupture. The fruit is soaked in water at the initial stage, and the central part of the disease spot turns brown and necrotic, showing star-shaped dry cracking, causing melon rot, the fruit expands to the mature stage, and spreads rapidly, and when it is serious, it will cause no harvest.

Route of transmission and conditions of onset:

A disease caused by coccidiomycetes infection. The pathogen can survive the winter on the diseased body and in the soil, and the seed surface can also carry bacteria. Germs are spread by wind and rain. The pathogen can invade from the internodes of the stem, leaves and leaf margin water pores and injuries. High temperature and humidity, dense leaves, poor ventilation, lack of fertilizer, weak plant growth are easy to occur, stubble land, low-lying land is serious, fertilization and tending cause wounds, bacteria are easy to infect.

Prevention and control of vine blight in cantaloupe:

A rotation of 2-3 years was carried out. Apply fully mature organic fertilizer and pay attention to the reasonable combination of nitrogen, phosphorus and potassium fertilizer. Disinfect the seeds before sowing. Blanch the seeds with 70 ℃ of hot water for 10 minutes, the volume of water is 3 times the volume of the seeds, keep stirring when blanching the seeds, so that the seeds are heated evenly. Chemical control. At the initial stage of the disease, 1500-fold solution of Dumaike, 500x solution of 50% methyl topiramate wettable powder, or 1500-fold solution of 25% carbendazim wettable powder or 70% chlorothalonil wettable powder were used. Or use Redomir plus chlorothalonil to spread the stem in paste.