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Wednesday, January 23, 2013
Tackling the spread of hyacinth in Kenya
Fishermen around Lake Victoria in Kenya are lamenting the spread of the aquatic weed hyacinth, but others are capitalizing on the plant.
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Plan to control weeds opposed
Environmentalist and iwi groups say chemicals not safe
The Government and electricity giant Mighty River Power want restrictions lifted on banned pesticides they want to discharge into waterways - including the Waikato River - to control pest weeds.
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Tuesday, October 30, 2012
Herbicide Spraying Closes Presque Isle
A helicopter will be flying over Presque Isle State Park on Wednesday, October 10 applying herbicide to 170 acres of land inundated with two invasive plant species. The invasive species are Narrow-leaf Cattail and Phragmites. The presence of these plants is damaging to the native plants as well as the overall habitat and ecosystem health of the park.
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Muck-monster at work — briefly — on Orange Lake
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| Joe Byrnes/Star-Banner |
Frank Taylor with A&L Aquatic Weed Control shreds vegetation near the Heagy-Burry boat ramp on Orange Lake in Orange Lake Monday morning.
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Weed research has positive flow-on effects
Victorian scientists are working on a solution to control aquatic weeds that block irrigation channels. Scientists … are testing a potential new herbicide to wipe out submerged aquatic weeds. DPI Senior Research Scientist Tony Dugdale said efficient water delivery was of critical importance to irrigators, farmers and the community. "When these weeds infest irrigation channels, the hydraulic capacity of the channels is reduced and the delivery of water becomes compromised," Dr Dugdale said. "This ultimately leads to reduced water delivery to irrigators."
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LSU AgCenter releases more weevils to fight aquatic weed
Dearl Sanders calls himself a bug chauffeur. The LSU AgCenter scientist is trying to move as many salvinia weevils as he can to combat the invasive aquatic plant giant salvinia, which is clogging waterways across Louisiana.
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Genoa residents split over weed control
Residents living along East and West Crooked Lakes in Genoa Township continue to disagree whether a large-scale chemical weed-control project would pose risks to human health or aquatic life.
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Alien weed spreading in Pampa river
The holy river Pampa, which has already been a victim of indiscriminate human intervention and high levels of pollution has, of late, become a fertile area for invasive weeds native to America. A recent study... found spreading presence of Cabomba, a fast-growing submerged aquatic species along the Aranmula stretch of the river...
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Mysterious weed in lake is hydrilla
A mysterious aquatic plant that fouls boat propellers, makes boating and swimming difficult, and has the potential to make fishing less productive has been identified as hydrilla, an invasive species.
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Great Lakes Commission to tackle Internet sales of aquatic invasive species
Ann Arbor, Mich. – The Great Lakes Commission (GLC) has received a $400,000 grant through the U.S. EPA-led Great Lakes Restoration Initiative to develop and demonstrate web-crawling software to assess the availability of aquatic invasive species for purchase – and identify sellers of those species – on the Internet.
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Thursday, October 4, 2012
Work to wipe out water weed to be Wednesday
Shawnee County Parks and Recreation announced Thursday it would work Wednesday with Brunswick, Ga.-based Estate Management Services to apply aquatic herbicide to Lake Shawnee to kill Eurasian watermilfoil, an invasive aquatic plant.
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Water hyacinth can be used to make biodegradable plastic
Water hyacinth is considered one of the most notorious aquatic weeds. It proliferates rapidly in lakes, dams and irrigation channels and chokes them. But scientists have now shown that the infamous weed is a rich source of carbohydrate and can be used to make biodegradable plastic.
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Researchers Study Roundup as Possible Cause of Harmful Algal Blooms
The herbicide Roundup may be contributing to the growth of harmful algal blooms in Lake Erie, according to Ohio Sea Grant researchers. Drs. R. Michael McKay and George Bullerjahn of Bowling Green State University are studying the impact of glyphosate, a phosphonate and the main ingredient in the commonly used herbicide, on the strains of blue-green algae found in Lake Erie.
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Tuesday, September 25, 2012
Weevils successfully destroy acres of lake-invading plants
(Phys.org)-A weevil that feeds exclusively on giant salvinia has successfully destroyed about 150 acres of the invasive plant this summer on B.A. Steinhagen Lake near Woodville in East Texas, according to personnel involved in a statewide giant salvinia management program.
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Monday, September 24, 2012
Aquatic threat found in Erie canal
NORTH TONAWANDA — A highly aggressive invasive species from Korea has been found in the North Tonawanda portion of the Erie Canal as state and federal authorities rush to identify the extent of the impending threat.
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Fenton residents have mixed reactions to weed control in lakes
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| Photo: Tri-County Times |
Fenton Twp. — Weed treatment in the lakes of Fenton Township has brought mixed reactions amongst residents. At Monday’s board of trustees meeting, Aquatic Nuisance Plant Control was given approval to treat Lake Ponemah and three other lakes.
Residents on the lakes agreed that the weeds needed to be addressed. However, there was some debate as to whether chemicals should be used to treat the weeds.
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Caged grass carp effective against aquatic weeds - study
A Ministry for Primary Industries trial has found grass carp kept in enclosures are effective in eliminating early infestations of aquatic weeds.
As part of the trial, six 2.5 metre by six metre cages were placed in beds of hornwort weed in Lake Karapiro.
Within nine weeks, the three to five fish contained in each cage had removed the weed.
MPI senior adviser Andrew Bell says once the hornwort was eradicated, the fish and the enclosures were removed safely.
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Cascade Water Alliance targeting milfoil beds for manual removal
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| Photo: BRIAN BECKLEY THE COURIER-HERALD |
After two successful summers of chemical treatment to remove the eurasian milfoil in Lake Tapps, Cascade Water Alliance is taking a more targeted approach this year: pulling out the invasive weed by hand.
"We're hoping from here on out it will just be maintenance," said Jon Shimada, capital projects director for Cascade.
Beginning this past week, divers from AquaTechnex are patrolling the lake's shores and yanking out what milfoil remains. According to Aquatic Biolgist Terry McNabb, two years worth of herbicides have made "huge strides" in battling milfoil, which can be dangerous to swimmers in large quantities, as well as the ecosystem of a body of water.
"People tend to forget that two years ago there was a bay this size you couldn't see the water," McNabb said Wednesday from the company's boat, located in a cove near then north end of the lake.
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Aquatic plant survey needs you
The Lake Gaston Association is again teaming with N.C. State
University's Aquatic and Non-Cropland Weed Management section of the Crop Science Department to survey the Lake Gaston shoreline for the different types of aquatic vegetation.
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