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Pseudocercospora purpurea is a fungal plant pathogen that causes a leaf spot on the avocado. Species Cercospora purpurea was originally found on the leaves of Persea species in Georgia, USA in 1878. [2] before the species was transferred to the Pseudocercospora genus in 1976. [1] It is also found in New Zealand and Australia, [3] [4] and Tolima ...
Fungal diseases; Anthracnose Colletotrichum gloeosporioides; Glomerella cingulata [teleomorph]; Armillaria root rot. Shoestring root rot Armillaria mellea; Rhizomorpha subcorticalis [anamorph]
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
Avocado sunblotch viroid (ASBV, Avsunviroid albamaculaperseae) is a disease affecting avocado trees.. Infections result in lower yields and poorer quality fruit. ASBV is the smallest known viroid that infects plants and is transmitted by pollen and infected seeds or budwood.
It has been recorded on 287 [2] plant species and cultivars on the U.S. Gulf coast alone. Common hosts of the plant include tropical trees and shrubs, with the following being the more common or economically important; tea, kava, pepper, para rubber, magnolia, coffee, holly, Indian hawthorn, oil palm, avocado, vanilla, mango, breadfruit, guava ...
P. graminis (stem rust of wheat and Kentucky bluegrass, or black rust of cereals); primary hosts include: Kentucky bluegrass, barley, and wheat; Common barberry is the alternate host. Heteroecious and macrocyclic; P. hemerocallidis (daylily rust); daylily is primary host; Patrinia sp is alternate host. Heteroecious and macrocyclic
The fire damaged or destroyed about 100 of his 300 avocado trees. So far, 4,102 acres of avocados were in the burn area, representing a quarter of the 16,497 acres of avocados harvested in Ventura ...
In 2007, an avocado tree near Jacksonville, FL was found showing symptoms of laurel wilt, and the laurel wilt fungus was confirmed to be present in the tree. [10] Field and laboratory observations have since confirmed that the redbay ambrosia beetle will infest avocado trees, although there may be some variation in how susceptible different ...