Download or read book Population Dynamics of Soybean Aphid Aphis Glycines Matsumura Homoptera Aphididae and Bean Leaf Beetle Cerotoma Trifurcata Forster Coleoptera Chrysomelidae on Edamame Soybean in Nebraska written by Bamphitlhi Tiroesele and published by . This book was released on 2005 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics and Sampling of the Soybean Aphid written by Erin Whitnee Hodgson and published by . This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Control of the Soybean Aphid Aphis Glycines Matsumura Homoptera Aphididae written by Tyler Bryce Fox and published by . This book was released on 2002 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Control of the Soybean Aphid Aphis Glycines Matsumura Homoptera written by University of Guelph. Department of Environmental Biology and published by . This book was released on 2007 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Aphid Aphis Glycines Matsumura Homoptera Aphididae in South Dakota written by Eric Andrew Beckendorf and published by . This book was released on 2005 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Pest Management for Soybean Aphid Aphis Glycines Matsumura Hemiptera Aphididae in the North Central U S written by Brian Patrick McCornack and published by . This book was released on 2007 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Aphid Aphis Glycines Matsumura Homoptera Aphididae written by Derek Stevan Crompton and published by . This book was released on 2007 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of the Soybean Aphid Aphis Glycines Matsumura Hemiptera written by Kevin Dennis Johnson and published by . This book was released on 2006 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: In North America, the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) is a pest of soybeans, Glycine max (L.) Merrill. The main goal of this research was to verify the preliminary economic threshold for A. glycines management in Iowa. Secondary goals included; verifying an alternative sampling techniques for estimating A. glycines populations, evaluating the effect of planting date on A. glycines population growth, and investigating the potential of managing both C. trifurcata and A. glycines with a single insecticide program. In 2004-2005, replicated experiments were established at three locations. Results from both years indicate that there is no detectable effect on soybean yield from an insecticide (lambda-cyhalothrin) application made below the current 250 A. glycines per plant economic threshold. Insecticide applications made at 250 A. glycines per plant protected yields when A. glycines populations continued to increase in the control treatment. The insecticide treatment triggered by a binomial sequential sampling (speed scouting) technique resulted in soybean exposure to A. glycines and soybean yield equal to the insecticide treatment applied using an enumerative sampling technique. Insecticide applications triggered by either enumerative sampling or speed scouting resulted in higher yields compared to control treatment when A. glycines populations reached 250 A. glycines per plant. A delay in soybean planting did not result in differences in soybean exposure to A. glycines. However, in both 2004 and 2005 yields in the late planting dates were not protected by insecticide applications. In 2005, foliar insecticides applied based on threshold of 250 A. glycines per plant reduced aphid exposure and protected yield better than preventative insecticide applications (seed treatments). Emphasizing the importance of insecticide timing when managing A. glycines, a foliar formulation of imidacloprid, was applied at threshold of 250 A. glycines per plant reduced A. glycines exposure and had greater yield protection than when imidacloprid was applied as a seed treatment. Experimental evidence from this research supports the current recommendations for soybean aphid management in Iowa (weekly scouting and a foliar insecticide applied when mean populations reach 250 A. glycines per plant on at least 38 plants and are increasing).
Download or read book Influence of an Early Soybean Production System and Row Width on Populations of Bean Leaf Beetle Cerotoma Trifurcata Forster Coleoptera Chrysomelidae and the Incidence of Bean Pod Mottle Disease in Mississippi written by Ronald Christian Stephenson and published by . This book was released on 2005 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wing Induction in the Soybean Aphid Aphis Glycines Matsumura Hemiptera Aphididae Mechanisms and Trade offs written by Ríos Martínez and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alate morphs can benefit aphid populations by facilitating dispersal from deteriorating food sources and by escaping from natural enemies. Wing development, however, imposes constraints on fecundity. The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is an important economic pest in the U.S. and Canada. I conducted a series of laboratory and field experiments to determine the environmental factors inducing wing development in this species, and to determine the effects of asexual alate individual production on an A. glycines population under predation. My results reveal that wing induction in A. glycines occurs in response to interactions between crowding and decreased plant quality cues, and that alate aphid production benefits an aphid population under predation by increasing prevalence at a temporary cost to fecundity. My results contribute to the growing knowledge on the production of asexual alate aphids and provide insight into the biology of A. glycines as an agricultural pest.
Download or read book Population Dynamics for Key Pests in Organic Soybean Fields in Ohio and Suceptibility Differences Between Organic and Conventional Soybean written by Colleen Elizabeth May and published by . This book was released on 2008 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: With reports of pest problems in organic soybean fields in Ohio, a group of studies were designed to look at what was happening. Three main insect pests were studied, the bean leaf beetle, Mexican bean beetle and soybean aphid. To study bean leaf beetle populations and dynamics, sampling was done in organic soybean fields. The data from this sampling study showed an economic population of bean leaf beetle in organic soybeans. This economic population and high levels of pod injury makes bean leaf beetle a major concern in organic soybean. The next study was designed to determine if there were decreases in plant susceptibility due to organic growing methods using Mexican bean beetle. No difference was found between organically and conventionally grown soybean. The last study looked at the soybean aphid. Samples were taken in organic fields to examine aphid populations and dynamics throughout the seasons. Although hampered due to weather, there were still economic populations of aphids present in organic soybeans.
Download or read book Effects of Fertilization on the Soybean Aphid Aphis Glycines Matsumura and the Effects of Soybean Aphids and Fertilization on Soybean Plants written by Abigail Jan Walter and published by . This book was released on 2005 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Soybean Insect Pests written by Leon G. Higley and published by Entomological Society of America. This book was released on 1994-09-28 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Soybean Insect Pests is the first book in a new series from the Entomological Society of America that examines pest management from all angles—magnifying practical field strategies for growers—and updates growers on the latest protection techniques—preventing needless crop loss as a result of outdated pest control procedures. Edited by Leon G. Higley and David J. Boethel, this book outlines fundamental approaches to soybean pest management that can aid in reducing crop damage and loss. It provides detailed descriptions of topics such as insect identification, life-history data, and management options. This comprehensive guide includes discussions on soybean ecology and physiology, soybean insect pests, predators and parasitoids, soybean pest management procedures, noninsect soybean pests, and insect management. Also included are 92 color photographs, 200 illustrations, a directory of resources for obtaining local information, and a glossary.
Download or read book The Impact of Natural Enemies on the Density and Within plant Distribution of Soybean Aphid Aphis Glycines Matsumura at the Western Extent of Its Range written by Tierney R. Brosius and published by . This book was released on 2006 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Arthropods Associated with the Soybean Root System Glycine Max L Merrill with Emphasis on Immature Bean Leaf Beetle Cerotoma Trifurcata Forster Coleoptera Chrysomelidae written by David Gerard Riley and published by . This book was released on 1986 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploring Soybean Aphid Aphis Glycines Matsumura Resistance Germplasm Across the Midwest and Its Relationship with Free Amino Acids Accumulation in Leaves written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploring soybean aphid (Aphis glycines Matsumura) resistance germplasm across the Midwest and its relationship with free amino acids accumulation in leaves.
Download or read book Host Plant Resistance and Insecticide Resistance Studies for Soybean Aphid Sphis Glycines Matsumura written by Desmi Indumali Chandrasena and published by . This book was released on 2009 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
