Files

Download

Download Full Text (347 KB)

Extension Number

PM 3070

Description

Pesticide resistance is on the rise in Iowa and the Midwest. Most corn and soybean farmers in the Corn Belt grow plants that have been genetically modified to express resistance to the herbicide glyphosate. In the case of corn, many hybrids have been genetically modified to express one or more Bt (Bacillus thuringiensis) proteins that are toxic to western corn rootworm, a major insect pest. The development of crops that are genetically modified to tolerate glyphosate has been tied to a substantial reduction in tillage, which has led to reduced soil erosion. The advent of Bt corn has been credited with a major reduction in the use of broad-spectrum insecticides. However, widespread and continuous use of these pest management technologies has led to selection pressure, or conditions that are conducive to the evolution of resistances to their modes of pesticide action.

Publication Date:

12-2014

Publisher:

Iowa State University Extension and Outreach

City:

Ames, IA

Keywords:

Community Economic Development, Sociology

Disciplines:

Agricultural and Resource Economics | Community-Based Research | Demography, Population, and Ecology | Rural Sociology

Disclaimer

Iowa State University Extension and Outreach publications in Digital Repository @ Iowa State University are made available for historical purposes only. The information contained in these publications may be out of date. For current publications and information from Iowa State University Extension and Outreach, please visit