Nutsedges: Important Weeds<BR>Purple nutsedge: identified as a weed growing in cropland areas in 1st Century A.D. <BR> <BR>Purple nutsedge is considered the World’s Worst Weed. <BR> <BR>Yellow nutsedge is one of the Top 5 World’s Worst Weeds. <BR>Negbi 1992<BR>Holm et al. 1977<BR>