Comparison of mechanical removal of perennial ryegrass overseeding out of bermudagrass to chemical transitions

In the fall, bermudagrass athletic fields are overseeded with perennial ryegrass [Lolium perenne L.] to provide a uniform playing surface slowed or dormant bermudagrass. Chemical techniques have been utilized for quick and efficient spring transition of ryegrass. Fraise mowing has identified as tool that can aid in spring. These studies were determine effectiveness comparing mechanical removal overseeding traditional on ‘Riviera’ [Cynodon dactylon (L.) Pers.]. 2017, field conducted at University Tennessee Center Athletic Field Safety (Knoxville, TN) Oklahoma State Turfgrass Research (Stillwater, OK). The seven treatments study were: fraise mow 6.4 mm from grass surface, 12.7 19.1 spray application trifloxysulfuron 27.8 g ha−1 non-ionic surfactant 0.25% v/v, foramsulfuron 28.9 ha−1, scalping (19.1 mm) rotatory mower, an untreated control. Treatments initiated 11 May 2017 Stillwater, OK USA 17 Knoxville, TN USA. Plots monitored six weeks following treatment application. was optimum depth transitioning this compared chemical transitions. This found removed more maintained percent green turfgrass cover throughout study. However, if time use area is not primary concern then depths greater than effective but delay green-up.