It is difficult to obtain an efficient mechanical and chemical control of wormwood (Artemisia verlotorum) because this weed has a great capacity to sprout and is tolerant to most herbicides. Natural areas infested with wormwood were treated with glyphosate and 2,4-D. Glyphosate was more efficient than 2,4-D on wormwood control. The application of 2,4-D did not cause significant differences on wormwood control 90 days after treatment. However, the glyphosate had prolonged effect, decreasing the number of living plants until 90 days after its application. Intermediary rates were more effecient than higher rates on wormwood control. Higher values of all studied characteristics of wheat crop were obtained with intermediary rates of both herbicides. Higher yield of wheat (3787 kg/ha) were obtained when 0,721 kg/ha of glyphosate associated with 1,152 kg/ha of 2,4-D was applied.
perennial weeds; systemic herbicides; Artemisia verlotorum