Bacterial leaf scorch is severely affecting urban shade trees grown not only to provide shade, but to help clear the air, reduce noise, and improve the aesthetics in many U.S. communities, say plant pathologists with The American Phytopathological Society (APS).
According to Ann Brooks Gould, associate extension specialist at Rutgers University, New Brunswick, NJ, bacterial leaf scorch (BLS) affects many shade tree species such as American elm, red maple, sweet gum, sycamore and London plane, and a number of oak species. The disease has been found in landscapes, street plantings, and small woodlots throughout the eastern U.S. and as far west as Texas.
According to Gould, BLS affects as many as 35 percent of susceptible street and landscape oaks in some central New Jersey communities. Current loss of value plus replacement costs for older trees affected by this disease is estimated at $8,000 per tree. Landowners and tree care professionals in these locations must plan for the loss of property values and high costs of replacement as shade trees in landscapes, wood lots, and golf courses affected by BLS decline and must be removed.
More on the symptoms of BLS and disease management options is available in this months APSnet feature article at http://www.apsnet.org/online/feature/bls/.
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Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
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Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
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Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
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On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
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