EFFECT OF MON-12037 ON PURPLE (CYPERUS-ROTUNDUS) AND YELLOW (CYPERUS-ESCULENTUS) NUTSEDGE

Greenhouse studies were conducted to determine the response of purple and yellow nutsedge to selective soil placement of 5 cm of soil treate d with MON-12037 above and/or below the nutsedge tubers. MON-12037 at 53 g/ai ha applied as a foliar, soil, or foliar + soil application als o were evaluated. MON-12037 placement above, below, or above + below t he nutsedge tuber decreased shoot number, shoot dry weight, shoot regr owth dry weight, and root-tuber dry weight production in both species, 30 and 60 d after treatment. MON-12037 applied as a foliar, soil, and foliar + soil treatment was effective in reducing purple nutsedge sho ot regrowth dry weight to less than 5% of the non-treated control. Yel low nutsedge shoot regrowth dry weight from the foliar + soil and soil -only applications was less than 1% of the non-treated control.