ludwigia การใช้

• Verdone wants to find out if Ludwigia's seeds are fertile.
• Researchers think Ludwigia entered the laguna when someone dumped an aquarium containing the plant.
• But bringing Ludwigia under control is not going to be easy, researchers say.
• "Ludwigia peploides " are native almost all over the United States.
• If they are in a low nutrient condition, " Ludwigia " double their biomass.
• Ludwigia is a problem because it forms dense mats and towering columns that protect juvenile mosquitoes from natural predators.
• The " Ludwigia " occur predominantly in wetlands and in the transition areas between aquatic and terrestrial environments.
• Hot water extract prepared from the leaf of " Ludwigia adscendens " exhibits alpha-glucosidase inhibitory activity more potent than that of acarbose.
• Ludwig is remembered for his correspondence with Carl Linnaeus, in particular, discussions involving the latter's Ludwigia " in honor of Ludwig.
• A fast growing water weed, Ludwigia hexapetala has bright yellow flowers and willow-like leaves that shield mosquito larvae and eggs from sprays and predators.
• Domestic forms of the Ludwigia have been seen along the edge of the laguna since the 1930s, but it does not form the dense mats typical of hexapetala.
• The reason these plants are scattered all over the globe is because " Ludwigia " can be generated during all seasons just from fragments of stems or rhizomes.
• CREDIT : Kent Porter / The Press Democrat-----Water weed spreads in Northern California Officials urgently seek ways to control Ludwigia in Russian River, other areas
• The worst infestations of Ludwigia are in the laguna near Sebastopol and in flood-control channels in Rohnert Park, where the weed now sprouts five feet above the water.
• Ludwigia's leaves cover and smother native plants and decrease the amount of open water where ducks can land and herons can wade in search of food, Sears said.
• He said the only direct way to control Ludwigia is with herbicides, most likely Rodeo, but the cost of application and in fighting anti-pesticide lawsuits would be high.
• Editors, two photos are available at Wieck . 1LUDWIGIA-- With a yellow flower and bright green tendrils, ludwigia, an import from Uruguay, is attractive to the eye.
• He said he has asked the Laguna Task Force, a coalition of government agencies with responsibility for the laguna, to give him a plan and options for Ludwigia control by Oct . 20.
• The Sonoma-Marin mosquito control district fears that lowering flows in the Russian River, as proposed by the Sonoma County Water Agency, would hasten the spread of Ludwigia into the river and downstream.
• Removal options under discussion include hand or mechanical removal, cattle grazing in places where the plant lives on land, covering small terrestrial areas of Ludwigia with plastic to deprive them of sunlight and dredging the channel.