Take Home Message:<BR>Yellow Nutsedge: <BR>Growth SUPPRESSED by black mulch <BR>Does not distribute itself far from the mother tuber <BR>Confirms the predictions of a spatial model of yellow nutsedge growth: farming operations are the main cause of yellow nutsedge dispersal in the field (Schippers et al. 1993). <BR> <BR>Purple nutsedge: <BR>Growth PROMOTED by black mulch <BR>Well suited to distribute itself through its environment.<BR>