Why are nutsedges <BR>such persistent <BR>weed problems?<BR>Estimated half life of a Purple Nutsedge tuber is 16 months <BR> <BR>Predicted longevity of a tuber is 42 months <BR> <BR>Burial at 8 and 23 cm did not affect tuber dormancy/viability<BR>Neeser et al. 1997<BR>