2015年9月3日 · The document discusses several diseases that affect pomelo trees, including Tristeza, Citrus Scab, Citrus Canker, Anthracnose, Citrus greening, Phytophthora gummosis, Citrus Chlorotic dwarf virus, and Pseudocercospora Fruit and Leaf Spot.

Citrus scab is a fungal disease caused by the pathogen Elsinoe fawcettii and Elsinoe australis which causes the unsightly brown to pale orange wart-like scabs on the leaves, stems, and outer rinds of citrus fruit

Other species of citrus - grapefruit, orange and pomelo - are also susceptible, but less so. Wart-like, raised light-brown pustules or scabs are produced on leaves, stems and fruit (Photos 1&2). The scabs are grey or pinkish at first, becoming darker as they age. The scabs join together, and their centres become depressed.

citrus scab is a severe problem on many tangerines and tangerine hybrids. The UH-CTAHR Waiakea Research Station in Hilo, which receives 170 inches of annual rainfall, is an ideal climate for scab disease development. The station has a large collection of citrus cultivars and some rootstocks commonly used in citrus cultivation. Observed suscep-

2024年6月18日 · Citrus canker and citrus scab are notorious for causing brown spots on pomelo leaves. Citrus canker, a bacterial disease, leaves tell-tale circular lesions with a water-soaked appearance and yellow halos.

摘 要：柑橘疮痂病（Citrus scab）是柑橘上的重要真菌病害，为害新梢、幼叶和果实，影响柑橘生长发育，果实产量和商 品价值。 在柑橘上， Elsinoë 属中的3 个种可引起疮痂病，即由 Elsinoë fawcettii 引起的普通疮痂病（Citrus Scab，CS）；

Citrus scab (048) - Worldwide distribution. On lemon, rough lemon and mandarin. Other species of citrus - grapefruit, orange and pomelo - are also susceptible, but less so. An important disease. The fungus distorts the leaves and makes the fruit unsightly. It stunts common rootstocks in the nursery, so they are difficult to bud.

2021年10月22日 · If you grow citrus fruits on a few trees in the home landscape, you may be familiar with citrus scab symptoms. If not, you may ask, what is citrus scab? It is a fungal disease that results in brownish, warty scabs that appear on the rind and, while it does not make the fruit inedible, it does reduce marketability in most cases.

摘要: 为了提高蜜柚叶部中晚期病害的识别准确率，确保蜜柚叶部病害对症施药与病害防治的效果，该文提出了一种基于最优二叉树支持向量机（support vector machine，SVM）的蜜柚叶部病害识别方法，该方法首先将蜜柚叶部病害图像转换为B分量、2G-R-B分量、 (G+R+B)/3分量以及YIQ颜色模型中的Q分量的4个灰度图像，再利用5尺度8方向的Gabor小波分别与4个分量灰度图像进行卷积运算，获得5个尺度下不同方向的幅值均值作为病害的特征向量，并结合提出的最优 …

2024年6月6日 · Several common pomelo diseases (e.g., citrus anthracnose, melanose, greasy spot, brown spot, black spot, scab, and canker) were included in our investigation. However, only the diseases greasy spot and melanose were found during our investigations in the orchards.