Abstract
BACKGROUND: A population of waterhemp in a seed maize production field in central Illinois, United States, was not adequately controlled after post-emergence applications of herbicides that inhibit 4-hydroxyphenylpyruvate dioxygenase (HPPD). RESULTS: Progeny from the field population survived following treatment with mesotrione, tembotrione or topramezone applied to the foliage either alone or in combination with atrazine in greenhouse experiments. Dose-response experiments indicated that the level of resistance to the HPPD inhibitor mesotrione is at least tenfold relative to sensitive biotypes. CONCLUSION: These studies confirm that waterhemp has evolved resistance to HPPD-inhibiting herbicides.
Original language | English (US) |
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Pages (from-to) | 258-261 |
Number of pages | 4 |
Journal | Pest Management Science |
Volume | 67 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2011 |
Keywords
- 4-hydroxyphenylpyruvate dioxygenase
- Amaranthus rudis
- Amaranthus tuberculatus
- Herbicide resistance
- Herbicide synergism
- Waterhemp
ASJC Scopus subject areas
- Agronomy and Crop Science
- Insect Science