How to prevent and cure cucurbits? Bacterial wilt can also be called black rot, which is a common disease of melon vegetables. It occurs frequently in the open season, mainly affecting the upper parts of the stems, leaves, melons and tendrils, and does not harm the roots. The vine vegetable blight is mostly developed from the surface of the stem to the inside, but the vascular bundle does not change color. Next, Xiaobian talks about the causes and control measures of the vine vegetable blight.
First, the cause of the disease of melon vegetables
The occurrence of vine melon blight is often associated with high temperature, high humidity and poor ventilation in the greenhouse. Plant growth and plant growth are prone to blight.
Second, melon vegetable blight symptoms
1. After the blade is damaged, it will produce a large round or irregular large lesion, which is easily broken and densely colored with black spots.
2. The incidence of plant disease generally shows that it is gradually yellowing from the bottom to the top, but the disease is serious, and several leaves will remain in the upper part of the plant.
3. When the petiole, melon vine or stem base is damaged, the lesion is yellowish-brown oil-like round to fusiform, and will overflow with amber resin-like gel. When the disease is serious, the stem section becomes black, rot, and broken. The diseased part is cracked and dried, and it is yellowish brown to reddish brown, and the surface is scattered with black small particles.
Third, melon vegetable blight control measures
1. Planting vegetables in greenhouses should be properly ventilated and dehumidified.
2. The cultivation of melons and vegetables should strengthen agricultural control, do a good job in water and fertilizer management, apply sufficient base fertilizer, increase phosphorus and potassium fertilizer, and improve the immunity of plants.
3. When the central diseased plant is found, it is necessary to use the medicine in time. The control agent can be used with 40% Anke Manganese Zinc 2000 times solution, 72% Plex 800 times solution or 50% Carbendazim 500 times solution, generally every 5 times. Spray once every -7 days and spray continuously for 3-4 days. At the same time, the above liquid medicine and mud can be mixed and then applied to the affected area of ​​the stem, once every 10 days, and continuously applied 2-3 times, the control effect is better.
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