Author/Authors :
Palizada, Santiago A. Department of Agriculture - Bureau of Plant Industry, Philippines , Palizada, Santiago A. University of Nebraska-Lincoln - Department of Entomology, USA , Tiroesele, Bamphitlhi University of Nebraska-Lincoln - Department of Entomology, USA , Tiroesele, Bamphitlhi Botswana College of Agriculture - Department of Crop Science and Production, Botswana , Kondidie, Difabachew Belay University of Nebraska-Lincoln - Department of Entomology, USA , Kondidie, Difabachew Belay Dow Agro Sciences, USA , Irfan Ullah, Muhammad University of Sargodha - University College of Sargodha - Department of entomology, Pakistan , Mustafa, Fatima University of Agriculture - Department of Entomology, Pakistan , Hunt, Thomas E. Haskel Agricultural Laboratory, USA , Clark, Pete L. Simplot-Manager Regulatory Affairs, USA , Molina-Ochoa, Jaime University of Nebraska-Lincoln - Department of Entomology, USA , Molina-Ochoa, Jaime Universidad de Colima - Coordinación General de Investigación Científica, Centro Universitario de Investigación y Desarrollo Agropecuario, Mexico , Skoda, Steven R. USDA-ARS - KBUSLIRL - Screwworm Research Unit, USA , Foster, John E. University of Nebraska-Lincoln - Departmentof Entomology, USA
Abstract :
Field experiments were conducted to evaluate the populations of minute pirate bug [Orius insidiosus (Say)] using visual, sticky cards and destructive sampling techniques in transgenic and non-transgenic maize in three locations in Nebraska (Mead, Clay Center, and Concord) United States of America, during 2007 and 2008 . All sampling methods revealed significant counts of O. insidiosus on CP4 EPSPS maize plus an insecticide application for control of first generation O. nubilalis at R2 (blister) sampling period. Similarly, visual observations of O. insidiosus on Cry1Ab x Cry3Bb1 x CP4 EPSPS maize yielded significantly higher mean adult counts at R2 (blister) sampling period for both years while, sticky cards and destructive sampling methods gave significant counts during 2007 and 2008, respectively. During both sampling periods (R1 and R2), mean adult counts of O. insidiosis differ significantly among the three sites at Mead, Clay Center, and Concord, Nebraska. Results from this research show that Cry1Ab maize, Cry1Ab x CP4 EPSPS maize, Cry1Ab x Cry3Bb1 x CP4 EPSPS maize, and CP4 EPSPS maize had no significant effects on O. insidious population abundance compared to CP4 EPSPS maize treated with insecticides.
