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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]
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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.
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 ]
Austropuccinia is a monotypic genus of rust (a type of plant pathogen) native to South America with the only species Austropuccinia psidii, commonly known as myrtle rust, guava rust, or ʻōhiʻa rust. It affects plants in the family Myrtaceae. It is a member of the fungal complex called the guava rust (Puccinia psidii) group. [3]
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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 avocado cultivars are to the laurel wilt fungus. [11] In 2011, laurel wilt-infected trees were detected in Miami-Dade County, near areas of commercial avocado groves. [6]