What are the common methods for controlling pests and diseases in Hami melons?
Hami melon is not only sweet in taste, but also rich in nutrients and has extremely high medicinal value. It is an economic fruit that combines both food and medicinal uses, with excellent planting prospects, and is deeply loved by consumers. It is grown all over the country. However, during the planting process, it often suffers from pests and diseases, which affect yield and quality. Below, the editor brings you the common pest and disease control methods for Hami melons. Let's take a look.
1. Bacterial leaf spot
When the disease occurs, water-soaked lesions appear on the underside of the leaves. As the disease develops, the lesions expand and merge into patches, with yellow halos at the edges of the lesions. Eventually, the leaves wilt and die, affecting plant growth.
Control method: When the disease occurs, spray with 77% Duoning at 500 times dilution for control, 1-2 times per week, for 3-4 consecutive times, and it can be cured.
2. Gummy stem blight
As the name suggests, gummy stem blight mainly harms the vines of the plant. When the disease occurs, the affected areas crack open and small black spots grow on the surface. In severe cases, a gummy substance oozes out, causing the vines to be unable to transport nutrients normally, and eventually they wither and die.
Control method: Control moisture; soil moisture should not be excessive. Try to avoid vine damage and reduce the possibility of pathogen invasion. When the disease occurs, spray with 25% Kairun emulsifiable concentrate at 1800 times dilution for control, once every 3-4 days, for 2-3 consecutive times.
3. Powdery mildew
Powdery mildew mainly harms leaves and vines. When the disease occurs, round lesions appear on the leaves. The lesions expand and connect into patches. In the later stages of the disease, white powdery particles appear on the lesions, and the leaves become yellow, brittle, and curled.
Control method: Strengthen field management, increase the application of organic fertilizer and phosphorus-potassium fertilizer, enhance plant disease resistance, prevent premature aging, prune reasonably, and increase air permeability. When the disease occurs, spray with 15% triadimefon wettable powder for control, once every week, for 2-3 consecutive times.
4. Root-knot nematode disease
Root-knot nematode disease is the most damaging disease to Hami melons. It has an extremely wide distribution range and can occur in all regions. It mainly harms the plant root system. When the disease occurs, a large number of milky-white root knots form on the root system, and in the later stage, huge root galls form. If these root knots or root galls are cut open, semi-transparent nematodes will be found inside. After the plant is infected, the absorption of the root system weakens to the point of stopping, and the aboveground stems and leaves gradually wither and die due to lack of nutrients and water.
Control method: Use insect-free soil or field soil for seedling raising. Before sowing or transplanting, treat the soil with chemicals to eliminate nematodes in the soil, or apply plant ash into the soil, deep plow and mix evenly, then dig trenches and form ridges or beds, fill with water, cover with plastic film and press firmly to isolate oxygen. After half a month, all bacteria and nematodes in the soil can be killed.
5. Pests
The main pests include mole crickets, cutworms, aphids, thrips, and red spiders. They gather on leaves or in the root system, constantly gnawing on or sucking the stems and leaves. During outbreaks, they eat all the leaves, causing the plants to grow weakly and, in severe cases, wither and die.
Control method: Pest control methods can combine agricultural control and chemical control. Agricultural control mainly involves destroying the living environment of pests, reducing pest sources, or using trapping and natural enemies. Chemical control mainly involves spraying insecticides for control.
The above are common pest and disease control methods for Hami melons. We hope this can help you. If you want to learn more about Hami melon cultivation knowledge, please stay tuned to us.