Mustard species commonly infest winter wheat fields and can cause significant yield losses if not controlled. This publication focuses on blue mustard (Chorispora tenella), flixweed (Descurainia sophia), and tumble mustard (Sisymbrium altissimum), although many of the management recommendations apply to other mustard species as well. Prevention can play an important role in managing mustard species since infestations often begin along field edges. There are a number of herbicides that can provide effective control of mustard species, but these must be applied early before the plants get large or enter the reproductive stage when rapid stem elongation begins. Mustards should be controlled by late winter or early spring
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