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Gymnosporangium juniperi-virginianae is a plant pathogen that causes cedar-apple rust. [1] In virtually any location where apples or crabapples ( Malus ) and eastern red cedar ( Juniperus virginiana ) coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars.
Gymnosporangium globosum is a heteroecious rust fungus that requires two hosts to complete its life cycle. Its telial stage occurs on eastern red cedar, Rocky Mountain juniper, southern red cedar, and other common junipers while its aecial stage will be found on apple, crabapple, hawthorne, and occasionally on pear, quince, and serviceberry.
Cedar-apple rust [10] Gymnosporangium kernianum: Juniperus: Amelanchier: Kern's pear rust [11] Gymnosporangium libocedri (Now Gymnotelium blasdaleanum, Pucciniaceae family) Calocedrus: Amelanchier: Pacific Coast pear rust, [11] Incense cedar broom rust [10] Gymnosporangium malyi (not known) Crataegus: Gymnosporangium multiporum: Juniperus (not ...
Cedar-apple rust disease, for example, can persist despite removal of one of the hosts since spores can be disseminated from long distances. The severity of cedar-apple rust disease can be managed by removal of basidiospore producing galls from junipers or the application of protective fungicides to junipers. [24]
Los Angeles gardens and landscapes won't support the environment and threatened wildlife unless they use native plants. Low water use isn't enough.
Cedar because of apple-cedar rust. Walnut because its roots produce growth inhibitors that apple trees are sensitive to [81] French marigold inhibits codling moth but also its insect enemies, and fails to reduce damage to apples. [82] Apricot: Prunus armeniaca: Peppers: A fungus that peppers are prone to can infect apricot trees causing a lot ...
Enterprise is a modern bred, late-ripening and attractive, red cultivar of domesticated apple with excellent fruit quality combined with disease resistance to scab, cedar apple rust, fire blight and some resistance to powdery mildew. The fruit is large and attractive and retains excellent fresh quality for up to six months at 1°C.
Juniperus virginiana foliage and mature cones. Juniperus virginiana is a dense slow-growing coniferous evergreen tree with a conical or subcylindrical shaped crown [8] that may never become more than a bush on poor soil, but is ordinarily from 5–20 metres (16–66 feet) tall, with a short trunk 30–100 centimetres (12–39 inches) in diameter, rarely to 27 m (89 ft) in height and 170 cm (67 ...
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