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Management of herbicide resistant weeds in Latin America: the case of propanil-resistant Echinochloa colona in rice

Proceedings of the second international weed control congress, Copenhagen, Denmark, 25-28 June 1996: Volumes 1-4: 415-420

Management of herbicide resistant weeds in Latin America: the case of propanil-resistant Echinochloa colona in rice

An account is given of propanil-resistant Echinochloa colona in rice in Colombia and other Central American countries. Resistance is associated with an increased activity of the aryl acyl amidase enzyme in the resistant biotypes which enable them to metabolize propanil at a much higher rate than susceptible biotypes. Integrated management tactics could help in controlling resistant populations and preventing resistance evolution.

Accession: 002889827

Related references

Riches, C.R.; Knights, J.S.; Chaves, L.; Caseley, J.C.; Valverde, B.E., 1997: The role of pendimethalin in the integrated management of propanil-resistant Echinochloa colona in Central America. Pre-emergence activity of pendimethalin on propanil-resistant jungle rice (Echinochloa colona) was demonstrated in glasshouse trials. Both susceptible and resistant populations, collected from Costa Rica, were controlled by 1.25 kg ha-1, the usual...

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