Download or read book Management of Banks Grass Mite Oligonychus Pratensis Banks in Field Corn Treated with Insecticides for Control of Western Bean Cutworm Loxagrotis Albicosta Smith written by Ronda Esther Hirnyck and published by . This book was released on 1983 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improved Sampling and Management Strategies for the Banks Grass Mite Oligonychus Pratensis Banks Infesting Commerrcial Field Corn in the Texas High Plains written by Daniel Flores and published by . This book was released on 1998 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Biological Control of the Banks Grass Mite Oligonychus Pratensis Banks Infesting Commercial Field Corn in the Texas High Plains written by Charles Hammond Pickett and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Biological Control of the Banks Grass Mite Oligonychus Pratensis Banks Acari Tetranychidae in Field Corn and the Interactions Between Spider Mites Their Predators and Host Plants written by Matthew Tyler Messenger and published by . This book was released on 1998 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Biological Study of the Banks Grass Mite Oligonychus Pratensis Banks in Kansas written by Harlan Dean Feese and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Agricultural Entomology written by and published by . This book was released on 1992 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Insect Pest Management for Corn on the Western Great Plains written by and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Descriptors: corn, insect pests, pest management.

Download or read book Ecology and Integrated Pest Management of Western Bean Cutworm Striacosta Albicosta Smith Lepidoptera written by Silvana Vieira de Paula Moraes and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of Western Bean Cutworm Striacosta Albicosta Lepidoptera written by Jocelyn Leigh Smith and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a pest of maize, Zea mays (L.), that has recently established in Ontario, Canada following a range expansion from the western United States. In addition to yield loss, ear feeding by S. albicosta was expected to exacerbate infection of mycotoxigenic fungi in maize grain, especially in southern Ontario where environmental conditions frequently favour infection of maize by Fusarium spp. The objective of this research was to determine effective management strategies for S. albicosta in Ontario. Specifically, the efficacy of Cry1F Bacillus thuringiensis (Bt) transgenic maize was evaluated for control of S. albicosta injury in field experiments from 2011-2015, and the susceptibility of Ontario field-collected S. albicosta to Cry1F was investigated using laboratory concentration-response bioassays. Non-Bt and Bt (Cry1F and Vip3A × Cry1Ab) maize hybrids in combination with insecticides and fungicides were evaluated for control of S. albicosta injury and accumulation of mycotoxins, particularly, deoxynivalenol (DON), under natural field infestation conditions from 2011-2014. The most effective application timing of pesticides was also investigated. Lastly, the relationship between S. albicosta injury and DON accumulation in maize was investigated based on field experiments in 2012-2014. A simple calculation for estimating the risk of F. graminearum infection during the silking and insect feeding periods was used to develop parameters to describe the relationship between S. albicosta injury and DON accumulation using multiple regression analysis. The results of this research provide evidence for field-evolved resistance to Cry1F within Ontario populations of S. albicosta and confirm the lack of efficacy of Cry1F-expressing hybrids for control of S. albicosta. Excellent control of S. albicosta injury was achieved with the Vip3A event and control of non-Bt and Cry1F maize was improved with insecticide application; however, low levels of DON were observed regardless of Bt event. A combined application of insecticide and fungicide at the full silking stage is recommended for maize hybrids lacking tolerance to F. graminearum infection. Lastly, these results confirm that injury by S. albicosta can increase the risk of DON accumulation in maize grain in Ontario; however, hybrid tolerance to F. graminearum and environmental conditions are predominant factors in DON accumulation.

Download or read book Control Studies of the Southwestern Corn Borer and Banks Grass Mite in Corn written by Norris E. Daniels and published by . This book was released on 1981 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influences of Temperature Humidity and Corn Canopy Microenvironment on Population Dynamics of the Banks Grass Mite Oligonychus Pratensis Banks written by Thomas McAdam Perring and published by . This book was released on 1983 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vertical Within plant Dispersal of Banks Grass Mite Oligonychus Pratensis Banks Acari Tetranychidae on Corn Zea Mays L written by Julia A. Barron and published by . This book was released on 1989 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination of Mechanisms of Host Plant Resistance to the Banks Grass Mite Oligonychus Pratensis Banks Acari Tetranychidae in Selected Maize Inbreds written by Matthew David Krakowsky and published by . This book was released on 1999 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Banks Grass Mite Oligonychus Pratensis and Root knot Nematode Meloidogyne Incognita Interaction in Corn written by William Kenneth Meeks and published by . This book was released on 1993 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Approaches to the Management of the Banks Grass Mite on Corn written by Frank C. Schweissing and published by . This book was released on 1973 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Acaricidal Resistance of the Banks Grass Mite Oligonychus Pratensis Banks in West Texas written by Gerald W. Hobson and published by . This book was released on 1977 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Biological Control of Western Bean Cutworm written by Westen Ray Archibald and published by . This book was released on 2017 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Western bean cutworm (WBC), Striacosta albicosta is a major pest of corn in western Nebraska. In 1999, its range expanded into much of North America causing damage from Nebraska to Canada and Mexico. WBC periodically causes kernel damage as severe as 15 bu/ac for one larva/plant. Control for WBC relies on Bt corn hybrids with Vip3A and Cry1F traits and insecticides. There has been a 5.2-fold decrease in efficacy of Cry1F for WBC. Concerns over management tactics may be creating space for conservation biological control to become part of a WBC integrated pest management (IPM) program. Objective 1, used an online survey to determine Nebraska stakeholder concerns, understanding, and practices for WBC IPM. Respondents self-reported significantly higher yield loss due to WBC in 2016 than in 2015 and 2014. Growers demonstrated low knowledge of WBC identification and management. There were frequent reports (58.45%) of Cry1F Bt corn providing decreased control against WBC. In objective 2, predator surveys for natural enemies of WBC indicated that four generalist predators were ubiquitous in Nebraska corn fields. Some species had population dynamics that were associated with the WBC population dynamics in corn. Lab-based feeding trials indicated that Coleomegilla maculata (De Geer) was a superior predator for WBC eggs and larvae. However, molecular gut content analysis of surveyed predators found in-field predation by multiple generalist predators but not C. maculata. By determining the needs of growers and the role of predators for WBC, conservation biological control may be incorporated into a WBC IPM program.