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Certain chemicals are used to treat leaf spot disease, such as the Bordeaux mixture, the first fungicide to have been developed, which treats many fungal and bacterial leaf spots. [7] Other fungicides such as zineb, chlorothalonil and Captan, also treat leaf spot disease and Benomyl specifically treats Cercospora leaf spots, cherry leaf spot ...
Indian hawthorn is a mainstay horticultural specimen in southern United States. It is often found in commercial as well as in private landscapes. Often it is trimmed into small compact hedges or balls for foundation plants. It has been successfully pruned into a standard form as well as small dwarf-like trees up to 15 feet in height.
Puccinia graminis is a macrocyclic heteroecious fungus that causes wheat stem rust disease. [citation needed] The sexual stage in this fungus occurs on the alternate host – barberry – and not wheat. The durable spore type produced on the alternate host allows the disease to persist in wheat even in more inhospitable environments.
Almond rust is a disease of almond trees that is characterized by angular yellow leaf spots on upper leaf surfaces and rusty brown masses of spores on lower leaf surfaces. [6] It was first discovered in the upper Sacramento Valley area of California but now has subsequently spread throughout both the Sacramento and San Joaquin valley orchards ...
Alternaria alternata is a fungus causing leaf spots, rots, and blights on many plant parts, and other diseases. It is an opportunistic [ citation needed ] pathogen on over 380 host species of plant. It can also cause upper respiratory tract infections [ 1 ] and asthma in humans with compromised immunity.
Most commonly Cephaleuros virescens is identified by the leaf spots it causes. Theses leaf spots are an orange-brown rust in color and usually occur entirely on the upper leaf surface, although leaf spots on the undersides of infected leaves have been reported. The spots are fuzzy in texture and approximately 2 cm (0.8 in) in diameter. [2]
These spots gradually enlarge and turn orange or red and may show concentric rings of color. Drops of orange liquid may be visible on the spots. Later in the season, black dots appear on the orange spots on the upper leaf surface. In late summer, tube-like structures develop on the undersurface of the apple leaf.
Rhaphiolepis (/ ˌ r æ f i ˈ ɒ l ɪ p ɪ s / RAF-ee-OL-ip-iss or / ˌ r æ f i oʊ ˈ l ɛ p ɪ s / RAF-ee-oh-LEP-iss) [2] is a genus of about fifteen species of evergreen shrubs and small trees in the family Rosaceae, native to warm temperate and subtropical East Asia and Southeast Asia, from southern Japan, southern Korea and southern China, south to Thailand and Vietnam.
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