Glyphosate-resistant Palmer amaranth (Amaranthus palmeri ) confirmed in Georgia

@inproceedings{Culpepper2006GlyphosateresistantPA,
  title={Glyphosate-resistant Palmer amaranth (Amaranthus palmeri ) confirmed in Georgia},
  author={A. S. Culpepper and T. Grey and W. Vencill and J. M. Kichler and T. Webster and S. M. Brown and A. C. York and J. W. Davis and W. Hanna},
  year={2006}
}
Abstract A glyphosate-resistant Palmer amaranth biotype was confirmed in central Georgia. In the field, glyphosate applied to 5- to 13-cm-tall Palmer amaranth at three times the normal use rate of 0.84 kg ae ha−1 controlled this biotype only 17%. The biotype was controlled 82% by glyphosate at 12 times the normal use rate. In the greenhouse, I50 values (rate necessary for 50% inhibition) for visual control and shoot fresh weight, expressed as percentage of the nontreated, were 8 and 6.2 times… Expand
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