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Practical Weed Science for the Field Scout: Corn and Soybean
Rocket, yellow (Barbarea vulgaris)
Winter annual broadleaf
A winter annual or biennial with shiny green foliage and bright yellow flowers. Seedlings have cotyledons that are egg shaped and slightly notched at the tip. First true leaves are rounded, usually with wavy margins. Basal leaves are about 2 to 8 inches long and lobed with one large terminal lobe and one to four oppositely arranged lateral lobes. Terminal lobes have a heart-shaped base. Leaves become smaller and less lobed toward the top of the plant. All leaves are alternate and have margins that are wavy and toothed. Individual flowers are bright yellow in color and consist of four yellow petals.
IPM1007, revised November 2009
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