The effective herbicides were selected in pot experiment and the efficacy of the selected herbicides ... The efficacy of herbicides were 87 ~ 100% at the zero and one-leaf stage of weedy rice, but 9 ~ 12% at ... 100% efficacy in 10 and 15 days flooding, respectively.
Rate (g a.i. ha-1) 15DAS1) 30DAS 45DAS Efficacy (%control) Rice Injury Efficacy (%control) Rice Injury ... Herbicide resistance in the Canadian prairie provinces: five years after the fact. ... Resistant biotype of Monochoria korsakowii against sulfonylurea herbicides in the reclaimed paddy fields