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Full-Text Articles in Life Sciences
Farmers’ Perspectives On Resistance In Western Corn Rootworm To Crw-Bt Corn In Midwest Usa, David A. Andow, Robert Wright, Erin W. Hodgson, Thomas E. Hunt, Ken Ostlie
Farmers’ Perspectives On Resistance In Western Corn Rootworm To Crw-Bt Corn In Midwest Usa, David A. Andow, Robert Wright, Erin W. Hodgson, Thomas E. Hunt, Ken Ostlie
Department of Entomology: Faculty Publications
Resistance in western corn rootworm to transgenic corn hybrids was first confirmed in 2011 in Midwestern USA, and threatens their continued use. Farmers are often the first line of resistance detection, so their understanding and attitudes toward this issue are critical for improving resistance management. We conducted telephone focus groups during 2013 with farmers who had experienced rootworm resistance. There were four stages in dealing with unexpected rootworm injury: Awareness of a problem, diagnosis, confirmation, and recommendations. Most farmers discovered the problem themselves, but this usually happened too late in the growing season to limit yield loss. Once aware of …
Influence Of Calcareous Soil On Cry3bb1 Expression And Efficacy In The Field, David S. Wangila, Arnubio Valencia, Haichuan Wang, Blair D. Siegfried, Lance Meinke
Influence Of Calcareous Soil On Cry3bb1 Expression And Efficacy In The Field, David S. Wangila, Arnubio Valencia, Haichuan Wang, Blair D. Siegfried, Lance Meinke
Department of Entomology: Faculty Publications
Greater than expected injury by western corn rootworm (WCR) (Diabrotica virgifera virgifera LeConte) to Cry3Bb1 expressing maize hybrids (Zea mays L.) has been reported in southwestern Nebraska. Affected areas of some fields are often associated with high pH calcareous soils where maize growth is poor and iron chlorosis is common. As part of a comprehensive study to understand potential causes of unexpected injury, experiments were conducted during 2013 and 2014 to ascertain whether the calcareous soil conditions and associated poor maize growth negatively affect the expression of Cry3Bb1. Quantitative determination of Cry3Bb1 protein expression levels in root tissues …