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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 and eastern red cedar (Juniperus virginiana) coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars.
The quarantine was declared thereafter and is designed to protect Washington's core apple growing regions from infestation. [1] [2] The Washington State Department of Transportation installed 70 signs along highways around the state in 1985 to warn of the quarantine. [3]
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]
Based on two recent aerial surveys, the U.S. Forest Service has estimated that nearly 12.5 million trees have died due to the area?s severe drought conditions.
The survey counted over 36 million dead trees, which is a dramatic increase, but there still may be more that were not counted. In a dramatic spike, 36.3 million trees died in California last year ...
By the mid-1800s the problem had become national, and states like California started offering incentives for planting trees to combat the depletion of forests. It became a patriotic duty to ...
The first light brown apple moth to be confirmed in California by DNA analysis was found in February 2007. James Carey, a professor of entomology at the University of California-Davis, believes, based on his previous experience with the gypsy moth program and its geographic spread at the time of identification, that the light brown apple moth had likely been in California for many years before ...
An orchard is an intentional plantation of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees that are generally grown for commercial production. Orchards are also sometimes a feature of large gardens, where they serve an aesthetic as well as a productive purpose. [1]