October 18, 2012. Locopelli - Wailuku , The Maui Weekly.
Hawai'i's Most Invasive Plant Species is Sugar Cane. The sugar cane industry has played a major role in Hawai'i's past and will play an important role in transcending into Hawai'i's agricultural future.
Federal price supports for sugar currently equal $180,000 per job times 800, or $14.4 billion. About 25,000 acres are burnt every year due to 2-years crop rotation. Burning removes dried leaves, reduces trash from fields and helps in control of pests and diseases. The government tries to limit burning with permits in order to prevent air pollution.
New app lets you report invasive species - Ohio State University Extension has released a new app for spotting and tracking invasive species -- non-native organisms such as Asian carps, purple loosestrife and Asian longhorned beetle --...
By using the free Great Lakes Early Detection Network app, a person can take pictures of suspected invasive species -- whether of farm, woods or water -- and upload the pictures and locations for verification.
The chestnut resurrection: “They're hard to breed and easy to kill,” says plant pathologist Fred Hebard as he attacks a 2-metre-tall chestnut tree in southwest Virginia.
Until a century ago, the American chestnut (Castanea dentata) was the cornerstone tree species of eastern North America. With long, straight trunks and bushy crowns, it carpeted the forest floor each autumn with prickly brown nuts. But the arrival of chestnut blight (Cryphonectria parasitica) from Asia wiped out almost all the stately trees, leaving only a few, isolated stands. Since then, a faithful fan club of scientists and citizens has sought to tame the blight.
Common Ragweed (Ambrosia artemisiifolia), is the most widespread plant of the genus Ambrosia in North America. It has also been called Annual Ragweed, Bitterweed, Blackweed, Carrot Weed, Hay Fever Weed, Roman Wormwood, Stammerwort, Stickweed, Tassel Weed, and American Wormwood. It is native in North America, but it is spreading in large areas in Europe, too. It is not only an agricultural problem, but also human health problem, causing alergic reactions. In Hungary they identified also airborne pollen of Ambrosia elatior. The pollen of both Ambrosia species occures in the air in July and August.
Fox News: Two years of testing and trapping have shown that an invasive species that led to vineyard quarantines across Northern California and threatened the state's wine industry has been eradicated...
The European grapevine moth managed to destroy an entire Napa County vineyard's crop at peak harvest time before anyone recognized the new invader in September 2009. Detection of the moth - one of the grape industry's most feared pests - triggered an aggressive state and federal eradication campaign to keep it from taking hold.
Intensive spraying and a quarantine that restricted movement of fruit and equipment failed to contain the voracious eater, which quickly spread into neighboring Sonoma County. A year later the moth spread to the southern Central Valley, before spreading out to the coast and a small area of the Sierra foothills.
Nobody yet knows how the moth got here, though some suspect it hitchhiked in on smuggled grapevine cuttings.
A recent review published in Nature argues that nascent fungal infections will cause increasing attrition of biodiversity, with wider implications for human and ecosystem health, unless steps are taken to tighten biosecurity worldwide.
The past two decades have seen an increasing number of virulent infectious diseases in natural populations and managed landscapes. In both animals and plants, an unprecedented number of fungal and fungal-like diseases have recently caused some of the most severe die-offs and extinctions ever witnessed in wild species, and are jeopardizing food security. Human activity is intensifying fungal disease dispersal by modifying natural environments and thus creating new opportunities for evolution.
An outbreak of the Asian longhorn beetle (Anoplophora glabripennis), an exotic beetle pest which could have severe consequences for British trees, has been found in Kent (England, United Kingdom), the Food & Environment Research Agency (Fera) confirmed on the 28th of March 2012.
Center for Invasive Species and Ecosystem Health ... Launching the eXtension Invasive Species Community. ... National Forest System Invasive Species Management. ... The Threat of Invasive Species on CBS News ...
A map of the range of the invasive brown marmorated stink bug at the #IPM Symposium. #IPM2012 Candace Pollock @SouthernSARE
Halyomorpha halys, the brown marmorated stink bug is an insect in the family Pentatomidae, and it is native to China, Japan, Korea and Taiwan. It was accidentally introduced into the United States, with the first specimen being collected in September 1998. The brown marmorated stink bug is considered to be an agricultural pest, and by 2010-11 has become a season-long pest in U.S. orchards.
Ash disease 'catastrophe' for UK biodiversity (RT @ManMetUni: Dr Robin Sen is doing more media this week on threat to UK ash trees http://t.co/MlmDudyh#ashdieback...)...
The importation of ash tree seedlings from Dutch forest nurseries may have been the trigger for spread of the disease to mature ash trees in East Anglia but alternative routes into the UK through international trade in wood products cannot be discounted.
The government has now imposed import and movement bans which has sparked fierce debate around the poor administration of bio-security measures and controls on imported food crop and tree species.
A worst case scenario estimate, suggests the loss of 80 million trees.
Invasive Species Spotlight: Garlic Mustard (Alliaria petiolata). by Kansas Department of Agriculture | October 20, 2012 at 7:56 PM.
Garlic mustard is one of those invasive species that seems to fly under the radar as it encroaches on more and more land. It was introduced from Europe in the 1800’s as a food and medicinal plant.
As a biennial it produces low-growing, non-flowering rosettes the first year of its life and then really takes off by producing 12 – 36” plants the second year. It is during this second year that it really does the most damage because that is when it flowers and produces many slender pods that contain more than 5,750 seeds per square foot. What’s worse is that each of those seeds will either sprout into another plant or lay dormant in the soil for up to 10 years, growing whenever conditions are just right...
Mile-a-Minute weed--or Persicaria perfoliata--was identified on the property two weeks ago and at the time covered 1,200 square feet of land. Since then the invasive plant has doubled in size, growing at a rate of approximately 6 inches a day...
The plant ailment, known as "Fusarium dieback," was identified recently by UC Riverside extension plant pathologist Akif Eskalen.
California is already battling the Asian citrus psyllid, which spreads a disease that is threatening the state's $2-billion citrus industry. Recently they have got a new problem: the tea shot hole borer is an ambrosia beetle about the size of a sesame seed. It carries the Fusarium fungus in its mouth. When the beetle burrows into an avocado tree, it infects the plant with the fungus. Fusarium then attacks the tree's vascular tissue, interrupting the flow of water and nutrients.
Telltale signs of an infestation include dead or dying branches, as well as beetle exit holes on the bark of the tree's trunk or main branches. The wood near these exit holes may be discolored, wet-looking or be coated with a white, powdery substance.
California’s citrus industry accounts for $2 billion in revenue. You would think a disease that threatens the industry would get more attention, yet this is the first I have heard about it. According to Yahoo news, “state bug detectives fanned across…suburban Los Angeles neighborhood Monday, vacuuming backyard trees with bug catchers, setting traps and taking tissue samples from citrus in a frantic effort to stop the spread of a deadly disease detected there last week.”
RT @pitsenberger: My latest post."This is the most significant plant disease invasion into California in modern history"; http://t.co/7hC50PCi...
The U.S. Department of Agriculture’s Animal (USDA) and Plant Health Inspection Service (APHIS) are dedicating the month of April to sharing information about the threat that invasive plant pests, diseases and harmful weeds pose to America's fruits, vegetables, trees, and other plants—and how the public can help to prevent their spread."
The Mighty Angler: The emerald ash borer is native to Asia and is thought to have been introduced here by wood cargo transported in shipping cargo from China to the Great Lake area. It was first discovered in Michigan near Detroit in 2002. Since then it has reportedly killed over 5 million ash trees across the northeast. It is also now present in the southern border areas of Canada.
This species is spreading incredibly fast and considering that there are a variety of ash trees in most of the U.S. states; this invader could do massive destruction in the very near future. Once attacked by these beetles, the tree will usually be dead in three to five years.
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