https://my.ucanr.edu/repository/view.cfm?article=179940%20&groupid=77
Deep plowing for yellow and purple nutsedge control - ANR Repository
nutsedge controldeepplowingyellowpurple
https://scholarspace.manoa.hawaii.edu/items/0768373b-7064-40e6-a362-8b3efdc9b042
Purple Nutsedge Control in Turf and Ornamentals
Purple nutsedge is distinguished from similar plants, and control options including registered herbicides are reviewed.
nutsedge controlpurpleturfornamentals