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  • Publications | Aaron Gassmann Laboratory
    2013 Resistance to Bt corn by western corn rootworm Coleoptera Chrysomelidae in the U S Corn Belt Journal of Integrated Pest Management 4 3 doi dx doi org 10 1603 IPM13012 Rudeen M L Jaronski S T Petzold Maxwell J L and Gassmann A J 2013 Entomopathogenic fungi in cornfields and their potential to manage larval western corn rootworm Diabrotica virgifera virgifera Journal of Invertebrate Pathology 114 329 332 Petzold Maxwell J L Alves A P Estes R E Gray M E Meinke L J Shields E J Thompson S D Tinsley N A and Gassmann A J 2013 Applying an integrated refuge to manage western corn rootworm Coleoptera Chrysomelidae effects on survival fitness and selection pressure Journal of Economic Entomology 106 2195 2207 Petzold Maxwell J L Meinke L J Gray M E Estes R E and Gassmann A J 2013 Effect of Bt maize and soil insecticides on yield injury and rootworm survival implications for resistance management Journal of Economic Entomology 106 1941 1951 Petzold Maxwell J L Jaronski S T Clifton E H Dunbar M W Jackson M A and Gassmann A J 2013 Interactions among Bt maize entomopathogens and rootworm species Coleoptera Chrysomelidae in the field effects on survival yield and root injury Journal of Economic Entomology 106 622 632 Rudeen M L and Gassmann A J 2013 Effects of Cry34 35Ab1 corn on survival and development of western corn rootworm Diabrotica virgifera virgifera Pest Management Science 69 709 716 Dunbar M W and Gassmann A J 2013 Abundance and distribution of western and northern corn rootworm Diabrotica spp and prevalence of rotation resistance in eastern Iowa Journal of Economic Entomology 106 168 180 Petzold Maxwell J L Cibils Stewart X French B W and Gassmann A J 2012 Adaptation by western corn rootworm Coleoptera Chrysomelidae to Bt maize inheritance fitness costs and feeding preference Journal of Economic Entomology 105 1407 1418 Gassmann A J and Hutchison W D 2012 Bt crops and insect pests past successes future challenges and opportunities GM Crops and Food 3 139 Gassmann A J Petzold Maxwell J L Keweshan R S Dunbar M W 2012 Western corn rootworm and Bt maize challenges of pest resistance in the field GM Crops and Food 3 235 244 Gassmann A J 2012 Field evolved resistance to Bt maize by western corn rootworm predictions from the laboratory and effects in the field Journal of Invertebrate Pathology 110 287 293 Gassmann A J Hannon E R Sisterson M S Stock S P Carrière Y and Tabashnik B E 2012 Effects of entomopathogenic nematodes on the evolution of pink bollworm resistance to Bt toxin Cry1Ac Journal of Economic Entomology 105 994 1005 Dunbar M W and Gassmann A J 2012 Effect of soybean varieties on western corn rootworm survival and fecundity Journal of Economic Entomology 105 625 631 Petzold Maxwell J L Jaronski S T Gassmann A J 2012 Tritrophic interactions among Bt maize an insect pest and entomopathogens effects on development and survival of western

    Original URL path: http://www.ent.iastate.edu/dept/faculty/gassmann/publications (2015-11-11)
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  • Join the Lab | Aaron Gassmann Laboratory
    group of Aaron Gassmann in the Department of Entomology at Iowa State University http www ent iastate edu dept faculty gassmann Current research within this group focuses on insect resistance management integrated pest management agroecology and interactions between agricultural pest insects and crops producing insecticidal toxins derived from the bacterium Bacillus thuringiensis Bt Possible research topics addressed through this assistantship could include dispersal behavior of insect pests life history trade

    Original URL path: http://www.ent.iastate.edu/dept/faculty/gassmann/opportunities (2015-11-11)
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  • Interactive Node Injury Scale
    J D Y Park T M Nowatzki and J J Tollefson 2005 J Econ Entomol 98 1 1 8 Value Description 0 00 No feeding damage lowest rating that can be given 1 00 One node circle of roots or the equivalent of an entire node eaten back to within approximately 1 inches of the stalk soil line on the 7th node 2 00 Two complete nodes eaten 3 00 Three or more nodes eaten highest rating that can be given Damage in between complete nodes eaten is noted as the percentage of the node missing i e 1 50 1 1 2 nodes eaten 0 25 1 4 of one node eaten etc To use the interactive node injury scale click on the image above The scale will appear in a new window Once the scale has loaded use arrow keys for precise movement up and down to increase decrease root injury and left and right to rotate the root The scale is a large file 9 MB and requires QuickTime 4 or later 1 6 Traditional Scale Hills T M D C Peters 1971 J Econ Entomol 64 764 765 1 No damage or only a few minor

    Original URL path: http://www.ent.iastate.edu/pest/rootworm/nodeinjury/nodeinjury.html (2015-11-11)
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  • Corn rootworm | Aaron Gassmann Laboratory
    Tags Corn rootworm field evaluations integrated pest management Dr Siva Rama Krishna Jakka Read more about Dr Siva Rama Krishna Jakka Area of Expertise Insect Resistance Management Alumni Postdoctoral Research Associate Dr Jakka s research focused on Bt resistance monitoring characterization of Bt resistance and cross resistance patterns among Bt toxins for western corn rootworm Diabrotica virgifera virgifera Eric Clifton Read more about Eric Clifton Area of Expertise Crop pest

    Original URL path: http://www.ent.iastate.edu/dept/faculty/gassmann/tags/corn-rootworm (2015-11-11)
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  • field evaluations | Aaron Gassmann Laboratory
    S T U V W X Y Z Skip to main content Department of Entomology Aaron Gassmann Laboratory Main menu Home People Publications Corn Rootworm Opportunities You are here Home field evaluations Corn Rootworm Western Corn Rootworm The western corn rootworm Diabrotica virgifera virgifera LeConte and the northern corn rootworm Diabrotica barberi Smith and Lawrence are both important pests of corn in the Midwest We study various tools for integrated

    Original URL path: http://www.ent.iastate.edu/dept/faculty/gassmann/tags/field-evaluations (2015-11-11)
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  • integrated pest management | Aaron Gassmann Laboratory
    are both important pests of corn in the Midwest We study various tools for integrated pest management of rootworm Read more about Corn Rootworm Tags Corn rootworm field evaluations integrated pest management Eric Clifton Read more about Eric Clifton Area of Expertise Crop pest management Graduate Students Ph D student I ve always enjoyed photographing the insects and fungi encountered during strolls through the woods It was only fitting to accept a research assistantship at Iowa State University focused on insect pathogenic fungi and their interactions with cropping practices Along the way I helped with experiments on western corn rootworm including a field study that used insect pathogens to help manage corn rootworm I completed my M S in summer 2013 and recently began Ph D research on pest and pesticide interactions to optimize soybean yield eclifton iastate edu Gassmann Lab Research Projects 1 Resistance to Bt corn by western corn rootworm Read more about Gassmann Lab Tags entomopathogens fungi integrated pest management nematodes refuge strategy resistance management rootworm Dr Aaron Gassmann Read more about Dr Aaron Gassmann Area of Expertise Integrated Pest Managment and Insect Resistance Management Principal Investigator Associate Professor My research interests are in the areas of

    Original URL path: http://www.ent.iastate.edu/dept/faculty/gassmann/tags/integrated-pest-management (2015-11-11)
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  • 1981 Department of Entomology Photo | Department of Entomology
    to main content Department of Entomology Main menu Home Prospective Students People Research Extension Publications Resources Search form Search Category Alumni Awards Careers Courses Entomology Extension Governance Graduate Study Grant Opportunities History Insect Identification Insect Zoo Minors Outcomes Assessment Pesticide Education Scholarships You are here Home More like this 1985 Department of Entomology Photo 1986 Department of Entomology Photo Department of Entomology 2014 1983 Department of Entomology Photo Bonning and

    Original URL path: http://www.ent.iastate.edu/1981-department-entomology-photo (2015-11-11)
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  • Grant Opportunities | Department of Entomology
    President for Research Grant Opportunities Opportunity Agency Deadline Posted Opportunity Agency 12 26 2015 8 14 2015 CALS Newsletter dated Aug 10 2015 Various 8 10 2015 12 03 2015 8 06 2015 CALS Newsletter dated Aug 3 2015 Various 8 3 15 12 03 2015 7 31 2015 NCR SARE Farmer Rancher Grant Call for Proposals NCR SARE 12 01 2015 11 06 2015 E News for Researchers VPR

    Original URL path: http://www.ent.iastate.edu/grant-opportunities?title=&field_grant_agency_tid=&page=1&order=field_deadline&sort=desc (2015-11-11)
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