News tagged with black walnut trees
Beetle, fungus deliver one-two punch to black walnut trees
Jul 09, 2009 |
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(PhysOrg.com) -- A newly discovered disease, caused by a previously undescribed fungus hitchhiking on a tiny native bark beetle, is infecting and killing hundreds of black walnut trees in California and seven ...
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Study Finds Oldest Trees Grow Slowest - Even as Youngsters
Biology /
Feb 05, 2009 |
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(PhysOrg.com) -- A newly published study has found that the oldest trees in the forest also grow the slowest - and they likely aren’t the prettiest.
Reviving American chestnuts may mitigate climate change
Jun 10, 2009 |
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A Purdue University study shows that introducing a new hybrid of the American chestnut tree would not only bring back the all-but-extinct species, but also put a dent in the amount of carbon in the Earth's ...
Tree-eating bugs threaten Monarch butterfly in Mexico
Nov 21, 2009 |
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The mysterious Monarch butterfly, which migrates en masse annually between Canada and Mexico, is now facing a new peril: another insect thriving in Western Mexican forests.
Well-traveled wasps provide hope for vanishing species
Nov 09, 2009 |
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They may only be 1.5mm in size, but the tiny wasps that pollinate fig trees can travel over 160km in less than 48 hours, according to research from scientists at the University of Leeds. The fig wasps are transporting ...
When palm trees gave way to spruce trees
Space & Earth / Earth Sciences
Jun 17, 2009 |
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For climatologists, part of the challenge in predicting the future is figuring out exactly what happened during previous periods of global climate change.
Long-term apple scab resistance remains elusive, expert says
Jun 25, 2009 |
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There are hundreds of choices when picking a crabapple tree from the nursery, but a Purdue University expert says only a handful are resistant to a widespread fungus or other serious diseases.
Trees facilitate wildfires as a way to protect their habitat
Oct 28, 2009 |
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Fire is often thought of something that trees should be protected from, but a new study suggests that some trees may themselves contribute to the likelihood of wildfires in order to promote their own abundance ...
New Southern California beetle killing oaks
May 01, 2009 |
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U.S. Forest Service scientists have completed a study on a beetle that was first detected in California in 2004, but has now attacked 67 percent of the oak trees in an area 30 miles east of San Diego.
Scientists Cryopreserve Pest-Imperiled Ash Trees
Oct 28, 2009 |
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(PhysOrg.com) -- Using cryopreservation methods, Agricultural Research Service (ARS) scientists have devised a procedure for storing frozen budwood from ash trees (Fraxinus) and thawing the delicate buds for ...
Time of day matters to thirsty trees, researcher discovers
Nov 23, 2009 |
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The time of day matters to forest trees dealing with drought, according to a new paper produced by a research team led by Professor Malcolm Campbell, University of Toronto Scarborough's vice-principal for research and colleagues ...
List of search results for black walnut trees
