turfgrass, 'Chisholm' zoysiagrass, overseeding, colorants, Green Lawnger, Match Play bermudagrass
Annual ryegrass overseeding into lawn-height zoysiagrass provided acceptable turf color for only four weeks. The colorant Green Lawnger provided a darker green and considerably longer duration of acceptable color as compared to the colorant Match Play (bermudagrass), which was lighter green on zoysiagrass. A single colorant application resulted in acceptable turf color for 7 to 24 weeks; a sequential midwinter application provided acceptable color until spring greenup.
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Braun, R.; Fry, J.; Kennelly, M.; Bremer, D.; and Griffin, J.
"Evaluation of Overseeding and Colorants on ‘Chisholm’ Zoysiagrass during Winter Dormancy,"
Kansas Agricultural Experiment Station Research Reports: