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Fire blight, also written fireblight, is a contagious disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to apple and pear producers. It is a serious concern to apple and pear producers.
A loquat leaf, shown at a high magnification, illustrating the general appearance of the leaf and the structure of the venation. E. japonica is a large, evergreen shrub or small tree, with a rounded crown, short trunk, and woolly new twigs. The tree can grow to 5–10 metres (16–33 feet) tall but is often smaller, about 3–4 m (10–13 ft).
Mcmanus PS. 1994. Role of Wind-Driven Rain, Aerosols, and Contaminated Budwood in Incidence and Spatial Pattern of Fire Blight in an Apple Nursery. Plant Disease 78:1059. Puławska J, Sobiczewski P. 2011. Phenotypic and genetic diversity of Erwinia amylovora: the causal agent of fire blight. Trees 26:3–12.
Blister disease Coniothecium chomatosporum: Blue mold rot Penicillium spp. Penicillium expansum. Botrytis spur and blossom blight Botrytis cinerea Botryotinia fuckeliana [teleomorph] Brown rot Monilinia fructicola Monilinia laxa. Cladosporium fruit rot Cladosporium herbarum Mycosphaerella tassiana [teleomorph] Clitocybe root rot (mushroom root rot)
Fungal diseases; Alternaria blotch Alternaria mali = A. alternata apple pathotype Alternaria rot Alternaria alternata: American brown rot Monilinia fructicola: Anthracnose canker and bull's-eye rot Pezicula malicorticus Cryptosporiopsis curvispora [anamorph] Apple scab: Venturia inaequalis Spilocaea pomi [anamorph] Apple ring rot and canker
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]
The wild form of M. germanica is mostly a thorny, more shrub-like than tree-like plant, which is between 1.5 and 4 m (5 and 13 ft) high. In the cultivated forms, the thorns are usually reduced or even completely absent. [4] In general, the medlar is a small, deciduous tree with an overhanging, almost round crown. The trunk is irregularly shaped ...
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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