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In southern Germany apple and pear trees have been a part of the landscape for a long time, and are difficult to protect. The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed]
Gymnosporangium juniperi-virginianae is a plant pathogen that causes cedar-apple rust. [1] In virtually any location where apples or crabapples and eastern red cedar (Juniperus virginiana) coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars.
The apple maggot is not as heavily targeted by predators and parasites as other insects because for most of its lifespan it is inaccessible, living inside apples as larvae and in soil as pupae. Occasionally flies are captured by various species of spiders, such as the Dendryphantes militaris, which predates on flies in apple trees. Birds may ...
Five years after the first light brown apple moth was found in California, the state eliminated funding for inspection and monitoring, due to the statewide budget problems in 2012. [15] The federal government funded the inspection program, and farmers were left to use pesticides to kill moth infestations at their own expense.
California is known to be free of Bactrocera tau (Walker). [303] California red scale (Aonidiella aurantii) is an invasive pest here. [304] It competitively displaced a prior invader Yellow scale . [304] Debach et al., 1978 finds that A. citrina is now extinct in this state due to the invasion of A. aurantii.
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The first apple tree in Washington may have been planted at Fort Vancouver between 1827 and 1829, [2] [3] [4] and one of the five original trees was designated a heritage tree by the City of Vancouver, Washington and surrounded by a park created in 1984, Old Apple Tree Park.
Blue dicks-ookow (Dipterostemon capitatus): one of the most common native bulb species throughout California; found in grassland and dry meadow habitats Mariposa lilies ( Calochortus spp.): available from reputable horticultural sources; taking from the wild is illegal and is resulting in significant declines of some species from over collecting.
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