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Successful, season-long weed management begins with a burndown application, that includes a residual herbicide, to kill emerged weeds and prevent additional weeds from emerging in cotton. Growers should then follow with a PRE application of residual herbicides plus an additional burndown herbicide at planting. After cotton emergence, most growers should make one or two POST herbicide applications. At layby, late-emerging weeds may be controlled using a hooded sprayer or directed sprayer. Large weeds may need to be removed by hand.
See what Roundup Ready PLUS has to say about early season weed management in cotton.