Watermelon wilt caused by dead watermelon seedlings how to control dead watermelon seedlings

Watermelon wilt

Watermelon seedling death is caused by soil-borne fungi, watermelon seedlings, adult stage, can occur, watermelon growth later, high temperature and rain, the disease is rapid and serious. In general, if the rainy season comes early, the precipitation time is long and the rainfall is large, the onset of the disease is early and the illness is serious. The incidence peak of dead watermelon seedlings is usually immediately after the rainfall peak, and the disease can occur at the temperature of 5 ℃ ~ 37 ℃.

Symptoms: watermelon leaves disease, produce round or irregular dark green water stains, when humidity, rot, dry, disease spots light brown, easy to break. The disease occurred at the base of the vine, and there were spindle-shaped dark green sunken spots, which surrounded the stem seriously and all died above the diseased part. Watermelon disease, the formation of dark green round water-immersed sunken spots, and then rapidly spread to the whole fruit, resulting in fruit rot, emitting the smell of silage, the surface of the disease is dense with white hyphae.

Prevention and treatment: at the initial stage of the disease, spray with 50% nail cream copper wettable powder 700 times, 72.2% Pulic water 800 times, 64% poison alum wettable powder 500 times, once every 7 to 10 days, for 3 times. If necessary, watermelon roots can also be irrigated with the above solution, 0.4-0.5 liter per plant. Spraying and root irrigation at the same time, the effect is better.