Journal
PEST MANAGEMENT SCIENCE
Volume 65, Issue 5, Pages 560-565Publisher
WILEY
DOI: 10.1002/ps.1738
Keywords
target site; resistance; seed dressing; ALS; EPSPS; Striga; Orobanche
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Funding
- US-Israel-Egypt US Agency for International Development (AID) [HNE-0158-G-00-3060-00]
- DGF trilateral Israel-German-Palestinian
- Rockefeller Foundation
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It is necessary to control root parasitic weeds before or as they attach to the crop. This can only be easily achieved chemically with herbicides that are systemic, or with herbicides that are active in soil. Long-term control can only be attained if the crops do not metabolise the herbicide, i.e. have target-site resistance. Such target-site resistances have allowed foliar applications of herbicides inhibiting enol-pyruvylshikimate phosphate synthase (EPSPS) (glyphosate), acetolactate synthase (ALS) (e.g. chlorsulfuron, imazapyr) and dihydropteroate synthase (asulam) for Orobanche control in experimental conditions with various crops. Large-scale use of imazapyr as a seed dressing of imidazolinone-resistant maize has been commercialised for Striga control. Crops with two target-site resistances will be more resilient to the evolution of resistance in the parasite, if well managed. (C) 2009 Society of Chemical Industry
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