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Identification of Symptoms and Control Methods for Honeysuckle Brown Spot Disease
What is honeysuckle brown spot disease? How is it controlled? An introduction to honeysuckle brown spot disease is given below: 1. Damage symptoms: This disease mainly damages the leaves. In the early stage of the disease, small yellowish-brown spots appear on the leaves. Later, several small spots merge together, forming round lesions or angular lesions limited by the leaf veins. When humid, the underside of the leaves also bears...
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How to identify and control brown spot disease of Angelica sinensis?
What is brown spot disease of Angelica sinensis? How to control it? Please provide guidance. The pathogen of brown spot disease of Angelica sinensis is a fungus of the genus Septoria in the subphylum Deuteromycotina. The pycnidia are round, and the conidia are filiform to needle-shaped, colorless and transparent, straight or slightly curved, mostly with slightly pointed tips, with 1-3 septa. 1. Damage symptoms: it damages the leaves. At...
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Control Methods and Technical Key Points for Licorice Brown Spot Disease
Brown spot disease is an infection caused by a type of imperfect fungus (Deuteromycete), mainly damaging the leaves. Its symptoms are: circular or irregular lesions appear on the leaves, the center of the lesion is grayish-brown, the edge is brown, and black mold-like growth occurs on both sides of the lesion. Control methods: spray 1:1:100-1:1:160 Bordeaux mixture or spray 70% thiophanate-methyl wettable powder at 1500x-2000x dilution.
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Occurrence and Control Methods of Brown Spot Disease and Powdery Mildew in Honeysuckle
Honeysuckle, also known as Erhua or Japanese honeysuckle flower, is a perennial climbing shrub. The dried flower buds of honeysuckle are a widely used antibacterial medicinal material, possessing the effects of clearing heat and detoxifying, promoting meridians and activating collaterals, and reducing inflammation and swelling. With the development and utilization of the medicinal value of honeysuckle, its cultivation has become increasingly widespread. However, the damage caused by brown spot disease and powdery mildew in honeysuckle has also shown an upward trend year by year. The occurrence and control of these 2 diseases are described as follows: Honeysuckle brown spot disease is a leaf disease caused by fungi of the genus Cercospora in the subphylum Deuteromycotina, occurring commonly and causing serious damage
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Symptoms and Control Methods of Brown Spot Disease in the Medicinal Plant Licorice
Licorice, scientific name Glycyrrhiza uralensis Fisch., also known as meicao and micao, is a perennial herbaceous plant in the Fabaceae family. Its roots and rhizomes are used as medicine. It has the effects of harmonizing the middle and relieving urgency, moistening the lungs and detoxifying, and harmonizing various medicines. It is produced in Inner Mongolia, Gansu, Shanxi, Shaanxi, Liaoning, Jilin, Heilongjiang, Hebei and other provinces. The symptoms mainly damage the leaves. The lesions on the leaves are round or irregular, 1-3 mm in size, with a grayish-brown center and brown edges, and grayish-black mold-like substances, namely the pathogen's conidia, grow on both sides.
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