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Propanil resistance in population of junglerice (Echinochloa colona) in Colombian rice fields

Propanil resistance in population of junglerice (Echinochloa colona) in Colombian rice fields

Weed Science 41(2): 201-206

In dose-response studies in greenhouse trials, estimated GR40 values (rates that reduce growth by 40%) indicated different levels of propanil resistance in E. colona populations from fields previously treated with propanil, compared to a control population collected where this herbicide had never been used. The GR40 value for susceptible populations ranged from 0.36 to 0.50 kg/ha and for resistant populations ranged from 1.1 to 3.1 kg.

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