Download or read book Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera Philoxeroides alligator Weed written by Justin Adams and published by . This book was released on 2011 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Restoration of Native Plants Through Chemical Control of Alligatorweed Alternanthera Philoxeroides at Eufaula National Wildlife Refuge written by and published by . This book was released on 2006 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Management of Alligator Weed Alternanthera Philoxeroides written by Imogen Eleanor Bassett and published by . This book was released on 2008 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1975 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of herbicides coordinated with insect-feeding damage as a method for alligator weed management is discussed. Detailed studies on the integrated control method include the details of the research program relating to an integrated approach, the effects of water quality on the distribution of alligator weed and water hyacinth, the effects of water hardness on herbicide toxicity, and the evaluation of promising herbicides for the control of alligator weed and water lettuce. Color illustrations reproduced in black and white.
Download or read book Alligator Weed Control Manual written by Elissa Van Oosterhout and published by . This book was released on 2007 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimising the Management of Invasive Aquatic Plants Targeted for Extirpation from Catchments and Waterways written by Daniel Clements and published by . This book was released on 2017 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Aquatic plants are integral components of freshwater ecosystems and provide essential ecosystem services. However, when invasive species establish in new aquatic environments, there are few natural checks and balances to inhibit their growth and spread. Overabundant aquatic vegetation can harm aquatic systems if left unchecked and negatively impact on agricultural productivity, social amenity and biodiversity values. Prevention and early intervention are recognised as the most cost effective means to manage invasive species that pose a biosecurity risk. This thesis contributes to the development of effective management strategies for one of the world's most invasive aquatic plant species, known as alligator weed (Alternanthera philoxeroides (Mart.) Griseb.). It focusses on developing management strategies in an early stage of invasion, in order to achieve extirpation of this species from catchments and waterways. Developing effective detection and surveillance strategies are required for invasive aquatic plants, as a key impediment to achieving extirpation is the ability to detect infestations, so that control strategies can be enacted. This thesis investigates the effectiveness of aerial surveillance for detection of alligator weed at different spatial scales, using high altitude aerial imagery (orthophotos) and unmanned aerial vehicle (UAV) technology. An examination of the growth rate of alligator weed in Victoria, Australia, over a five year period, demonstrates the effective use of orthophotos to detect and monitor large infestations of aquatic alligator weed. The efficacy of unmanned aerial vehicle technology, including the use of automated algorithms, to detect patches of alligator weed growing in waterways is evaluated against current detection techniques. Effective management of invasive aquatic plants targeted for extirpation requires the coupling of effective detection and control efforts to prevent reproduction. To date, development of control strategies for aquatic alligator weed has been limited to evaluating the efficacy of short-term control at a local scale without regard to the effects of management strategies on dispersal of propagules throughout catchments. This thesis determines that viable alligator weed stem fragments are produced following herbicide application, which comprises extirpation efforts. This thesis has gone further than current practice in that it has evaluated the efficacy of current and novel control techniques, in both laboratory and field trials and has developed methods to manage viable fragment production post-herbicide application, to limit dispersal throughout catchments. In this respect, the application of the herbicides glyphosate, metsulfuron-methyl and imazapyr, and their effectiveness when incorporating surfactant systems and plant growth regulators, have been evaluated in field and laboratory studies to optimise control techniques for aquatic alligator weed. Results have shown that our approaches, when used in an early stage of invasion, are capable of eliminating patches of alligator weed in two to three years. Integral to the research is an experiment to determine the effect of herbicide treatments on the production of alligator weed stem fragments and their subsequent viability. Further investigation to determine the usefulness of commercially available plant growth regulators (PGRs) to reduce the number of viable propagules produced by alligator weed post-herbicide application was found to be ineffective. This thesis also evaluates the impact of herbicides and surfactant systems, on all key alligator weed response metrics in aquatic environments including; above ground biomass, below ground biomass and viable stem fragmentation. No previous studies have looked simultaneously at these three important measures for determining the efficacy of a particular control regime, and we have determined that this is essential for effective management of aquatic alligator weed in an early stage of invasion. The thesis has underscored the notion that development of more effective management strategies, based upon experimental trials, will result in an increased likelihood of eradicating invasive aquatic plants that pose a biosecurity risk, and thus move toward the mitigation of the threat that high-risk species pose to aquatic ecosystems." -- Abstract.
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1975 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Summary Review of Investigations on Alligatorweed and Its Control written by Lyle W. Weldon and published by . This book was released on 1960 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1975 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pulling Together written by and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Plant Control Research Program Alligatorweed Survey of Ten Southern States written by Alfred F Confrancesco (Jr) and published by . This book was released on 1988 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alligatorweed (Alternanthera philoxeroides (Mart.) Griseb.) is an exotic South American plant introduced into the United States prior to 1897. It rapidly developed into problem levels throughout most southern states, where it outcompetes native vegetation and interferes with navigation and recreational use of waterways. Three biological control agents Agasicles hygrophila (Selman and Vogt), Amynothrips andersoni (O'Neill) and Vogita malloi (Pastrana) were released in the United States between 1964 and 1970 for the control of alligatorweed. A review of the releases and population development of these insect species was conducted through 1972 by US Department of Agriculture scientists. The objectives of this study were to: (a) determine the current extent of the alligatorweed population in each state and ascertain whether or not it occurred at problem levels, (b) define the current population levels of biocontrol agents at selected original release sites and assess their impacts on the alligatorweed population, (c) describe the current distribution of each species of biocontrol agent in each state, (d) identify environmental factors influencing the effectiveness of each biocontrol agent, and (e) provide recommendations for managers to enhance the effectiveness of each biocontrol agent in areas where control has not been achieved. Keywords: Biological weed control; Aquatic weeds. (kt).
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1974 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed studies are reported on the practical use of 2,4-D for control of water hyacinth; criteria for registration; toxicology, persistence, and mobility of phenoxy herbicides; herbicide residue; dissipation of 2,4-D in potable water resources; and integrated control of water hyacinth and alligator weed.
Download or read book Aquatic Plant Control Program written by and published by . This book was released on 1973 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The greatest success with the Agasicles as a biocontrol for alligator weed has been at experimental sites in Florida. The increased effectiveness of the alligator weed beetle in this area is believed to be related to the ability of the insect to overwinter. The Agasicles population usually has two peaks of activity in Florida as compared with one in other states. Alligator weed mats present at the beginning of the study reported herein have decreased in size and thickness. Plant competition has played an important role in controlling the alligator weed at the Goose Creek site by Agasicles and at several other sites in the southeastern states. The feeding of the Agasicles on alligator weed decreases its ability to compete with other aquatic plants. Other insects may be used to extend control over a greater geographic area. (Author).
Download or read book Residual Herbicide Impact on Native Plant Restoration as an Integrated Approach to Cogongrass Management written by Melissa Carole Barron and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wiregrass was the most sensitive showing at least 30% injury at all rates of imazapyr regardless of plantback interval. In a repeated study, similar predicted dates were generated according to I30 values for E. grandis and switchgrass.
Download or read book Alligator Weed written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Invasions and Its Management in China written by Fanghao Wan and published by Springer. This book was released on 2017-04-25 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book discusses invasive-species problems in agriculture, forests and aquatic ecosystems, highlighting the invasive mechanisms and management of the selected invasive species. Biological invasion has become a serious global ecological and economic problem that deserves particular attention from both government officials and scientists. This volume focuses on three key scientific areas: 1) population establishment and spreading mechanisms of the selected invasive species; 2) ecology adaptation, population growth, expansion and evolution of invasive species; and 3) impact of bio-invasion on the ecosystem structure and function at community and ecosystem levels. The presented research will result in techniques for better management of invasive species.
Download or read book Systematics and Pathogenicity of Fungi from Alligator Weed in Australia written by Ross Leslie Gilbert and published by . This book was released on 2011 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Alligator weed (Alternanthera philoxeroides) is a major weed of world importance and a “weed of national significance” to Australia where it is proclaimed noxious in all states. In spite of a concentrated effort with herbicides and insect biological control, the core infestation in NSW is still inadequately controlled and acts as a reservoir for new outbreaks throughout Australia. Inundative biological control with plant pathogens (mycoherbicide) is seen as a “softer” alternative to chemicals and could be integrated with existing control methods to give better levels of control." (ABSTRACT, l. xviii).
