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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.
The disease can infect trees of all ages, though trees that are physiologically stressed through water or nutrient deficiencies or wounded via extreme weather or insect damage have a higher incidence of infection. [1] The hallmark symptom of Diplodia tip blight is stunted, brown needles and stems, particularly of new shoots. [4]
It was first recorded in Britain on Corsican pine in 1954 in a nursery in Dorset. [4] [3] The disease spread sporadically until 1966, after which there were no new reports up until the end of the 1990s. [3] Between 1997 and 2005 the majority of reports were on Corsican pine in East Anglia, although it had been found in other parts of Britain. [3]
The healthy pine trees were killed—especially Japanese red pine (Pinus densiflora) and Japanese black pine (P. thunbergii). However, Jack pine (P. banksiana), loblolly pine (P. taeda), sugi redwood (Cryptomeria japonica), and Hinoki cypress (Chamaecyparis obtusa) trees were able to survive. [7] In 1971, the researchers concluded that the ...
Pinus nigra is a large coniferous evergreen tree, growing to 20–55 metres (66–180 feet) high at maturity and spreading to 6 to 12 m (20 to 39 ft) wide.The bark is gray to yellow-brown, and is widely split by flaking fissures into scaly plates, becoming increasingly fissured with age.
Higher wind speeds are necessary to damage healthier trees. Fire, whether caused by humans or lightning, and related abiotic factors also affect the health of forest. The effects of man often alter a forest's predisposition to damage from both abiotic and biotic effects. For example, soil properties may be altered by heavy machinery.
Native to Australia, the trees, which are commonly referred to as red gum or bloodwood trees (for obvious reasons), exhibit a shockingly human characteristic: they "bleed" when they're cut into ...
Red band needle blight is a fungal disease which affects coniferous trees, particularly pine, with a worldwide distribution. The disease is caused by the fungi Dothistroma septosporum . Since the late 1990s its appearance in the United Kingdom has increased, among the most affected species is Corsican pine and the disease has been a significant ...
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