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Control Methods for the Mango Leaf Gall Midge Pest
This insect is distributed in production areas including Guangdong, Guangxi, Hainan, Yunnan and Fujian, and is a frequently occurring major pest. It severely damages flush-stage leaves; each leaf may have several or a dozen galls, greatly affecting the quality of new flushes. Damaged leaves are left with numerous perforations, affecting
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Latest Pest and Disease Control Methods for Rhododendron molle
Leaf gall disease Since Rhododendron molle is also a type of azalea, it is quite prone to leaf gall disease, and the probability of infection is relatively high. Spots may appear on the front or back, and in severe cases both stems and leaves will swell; in severe cases, it looks like a biscuit. This disease in
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Symptom Identification and Control Methods for Azalea Leaf Gall
Symptoms: Azalea leaf gall, also known as cookie disease. The young tissues of azaleas can all be affected, mainly damaging flower buds, young leaves and new shoots. On the upper surface of the leaves, initially pale yellow semi-transparent round spots appear, later turning yellow and sunken; the underside of the leaves is pale red, thickened and swollen, subsequently raised into galls, with a thick grayish-white powdery layer on the gall surface, like a cookie, and the leaves wither, yellow and fall early. In severe cases, the petiole lesions merge into patches, deformed and thickened. When young shoots are affected, fleshy lotus-like leaves or tumor-like leaves are produced at the tips, later shrinking into sac-like forms. After the petals are infected, they become abnormally thickened, forming irregular galls.
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