Pumpkins prefer a cool and humid climate and are easy to cultivate. However, they also encounter various diseases during their growth process, among which pumpkin stem blight is more common. So, what are the symptoms of pumpkin stem blight? How to prevent and control pumpkin stem blight?
Symptoms of pumpkin stem blight
Mainly damaging stems and leaves, fruits can also be affected. In the early stages of the disease, there are water stained, oblong spots at the base of the stem, which are grayish brown with brown edges, and sometimes overflow with amber resin like colloid. In severe cases, it can cause vine withering. Leaf disease occurs when the lesion extends from the leaf edge to the inside of the leaf, forming circular or "V" shaped, yellow brown to black brown lesions that are prone to ulceration in the later stage.
Prevention and control of pumpkin stem blight
1. Agricultural prevention and control. Implement 2-3 years of rotation, adopt formula fertilization technology, and apply sufficient organic fertilizer that is fully decomposed.
2. Chemical prevention and control. In the early stage of the disease, medication should be administered throughout the field, and prevention should be repeated every 3-4 days. In the future, medication should be determined based on changes in the condition.
