Milkweed loss in agricultural fields because of herbicide use: effect on the monarch butterfly population

  title={Milkweed loss in agricultural fields because of herbicide use: effect on the monarch butterfly population},
  author={J. Pleasants and K. Oberhauser},
  journal={Insect Conservation and Diversity},
  • J. Pleasants, K. Oberhauser
  • Published 2013
  • Biology
  • Insect Conservation and Diversity
  • Abstract.  1. The size of the Mexican overwintering population of monarch butterflies has decreased over the last decade. Approximately half of these butterflies come from the U.S. Midwest where larvae feed on common milkweed. There has been a large decline in milkweed in agricultural fields in the Midwest over the last decade. This loss is coincident with the increased use of glyphosate herbicide in conjunction with increased planting of genetically modified (GM) glyphosate‐tolerant corn… CONTINUE READING
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