Download or read book Biological control of alligatorweed 1959 1972 written by Jack R. Coulson and published by . This book was released on 1977 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biological Control of Alligatorweed written by Neal R. Spencer and published by . This book was released on 1975 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alligatorweed, Alternanthera philoxeroides, an aquatic amaranth introduced into the United States from South America around the turn of the century, has become a noxious aquatic weed over the past 40 years. Three insects appeared suitable for introduction into the United States as biological control agents of alligatorweed. These insects are: (1) Agasicles hygrophila, (Coleoptera: Chrysomelidae), now commonly known as the 'alligatorweed flea beetle'; (2) Amynothrips andersoni (Thysanoptera: Phlaeothripidae), the 'alligatorweed thrips'; and (3) V. malloi, the so-called 'alligatorweed stem-borer'. A general discussion of the biology, feeding behavior, and resulting plant damage of these insects is given. Portions of this document are not fully legible.

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 Biological Control of Alligatorweed written by Jack R. Coulson and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control Technology Development Biological Control Activities in Texas and California written by A. F Cofrancesco (Jr) and published by . This book was released on 1984 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alligatorweed and waterhyacinth are two of the most troublesome aquatic plants in the United States. In research sponsored by the Corps of Engineers' Aquatic Plant Control Research Program (APCRP) three insects were identified for alligatorweed control, the alligatorweed flea beetle (Agasicles hygrophila Selman and Vogt), the alligatorweed stem borer (Vogtia malloi Pastrana), and the alligatorweed thrips (Amynothrips andersoni O'Neill). Three insect species have also been identified by APCRP as biocontrol agents of waterhyacinth. These insects include the mottled waterhyacinth weevil (Neochetina eichhorniae Warner), the chevroned waterhyacinth weevil (Neochetina bruchi Hustache), and the Argentine waterhyacinth moth (Sameodes albiguttalis Warren). Discussion of aquatic weed problems between the U.S. Army Engineer District, Galveston, and the Waterways Experiment Station (WES) resulted in a proposal being a submitted by WES to assist in controlling aquatic weed problems for the Galveston District. A framework for introduction and evaluation of all insect species was established. Previously introduced insect species in alligatorweed would also be investigated, with special emphasis placed on the determination of environmental factors that may be limiting the effectiveness of these insects in controlling alligatorweed.

Download or read book Biological Control of Alligatorweed 1959 1972 written by and published by . This book was released on 1977 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Methods of Weed Control written by Sara S. Rosenthal and published by . This book was released on 1984 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control with Insects written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aquatic Plant Control Program Technical Report 3 Biological Control of Alligator Weed written by US Army Engineer Waterways Experiment Station and published by . This book was released on 1973 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control of Alligatorweed 1959 1972 written by Jack R. Coulson and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Insects to Manage Alligatorweed written by Environmental Laboratory (U.S. Army Engineer Waterways Experiment Station) and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Early season Dynamics of Alligatorweed Biological Control by Agasicles Hygrophila in Louisiana and Mississippi written by Nathan E. Harms and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control and Ecology of Alligator Weed written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project was to improve management of alligator weed in Australia. This was to be accomplished through; 1) testing the host specificity of two herbivorous insects for potential use as biological control agents and 2) completing ecological studies to better understand the weed in order to develop and promote more effective methods of control.

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 Biological Control of Alligatorweed 1959 1972 written by ESTADOS UNIDOS. Department of Agriculture and published by . This book was released on 1977 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agasicles hygrophila Selman and Vogt; Liberation of Agasicles by states; Laboratory and fiels studies of Agasicles; The effectiveness of Agasicles; Amynothrips andersoni O'Neill; Vogtia malloi Pastrana; The effectiveness of Amynothrips and Vogtia.

Download or read book Instruction Report written by Waterways Experiment Station (U.S.) and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control Measures of Success written by G. Gurr and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: As well as examining successful biological control programmes this book analyses why the majority of attempts fail. Off-target and other negative effects of biological control are also dealt with. Chapters contributed by leading international researchers and practitioners in all areas of biological control afford the book a breadth of coverage and depth of analysis not possible with a single author volume. Combined with the use of other experts to review chapters and editorial oversight to ensure thematic integrity of the volume, this book provides the most authoritative analysis of biological control published. Key aspects addressed include how success may be measured, how successful biological control has been to date and how may it be made more successful in the future. With extensive use of contemporary examples, photographs, figures and tables this book will be invaluable to advanced undergraduate and postgraduate students as well as being a `must' for all involved in making biological control successful.