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A raspberry leaf spot infection initially causes dark green circular spots on the upper side of young leaves, which will eventually turn tan or gray. [3] These spots are typically 1–2 millimetres (0.039–0.079 in) in diameter, but can get as big as 4–6 millimetres (0.16–0.24 in). [4]
The raspberry spur blight fungus spreads through the pycniospores that are released from the pycnidia. The spores are released and infect other raspberry plants with the help of rain through open wounds or natural openings. [7] The fungus will then spread throughout the plant and will live in lesions during the winter to survive.
Black raspberry necrosis virus (BRNV) is a plant pathogen virus of the genus Sadwavirus found in black raspberries (rubus occidentalis). The virus causes leaf chlorosis , mottling and puckering. Affected plants typically fail to yield fruits after three to four years.
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Raspberry ringspot virus (RRSV) is a plant pathogenic virus of the family Secoviridae. It was first described by Cadman in 1958. It causes ringspots in raspberries and strawberries and can cause rasp-leaf symptoms in cherry. It also has been found in many other plants including those in the Vitis and Narcissus genera.
Imagus, larva and damaged raspberry fruit. The raspberry beetle (Byturus tomentosus) is a species of beetle in the fruitworm family Byturidae. It is a major pest that is widespread in north-central Europe, affecting raspberry, blackberry and loganberry plants. This species is related to the raspberry fruitworm (B. urbanus) which is native to ...
Idaeovirus is a genus of positive-sense ssRNA viruses that contains two species: Raspberry bushy dwarf virus (RBDV) and Privet idaeovirus. [1] [2] RBDV has two host-dependent clades: one for raspberries; the other for grapevines. [3] Infections are a significant agricultural burden, resulting in decreased yield and quality of crops. [4]