Abstract
Abstract The effects on Kentucky bluegrass (Poa pratensis L.) turf quality of mowing with either a mulching mower or a conventional rotary mower, having clippings re moved or returned, were determined. Turf that received 0, 150, or 300 kg N ha–1 yr–1 was mowed at 5 cm either biweekly, weekly, or twice weekly. Turf quality, weed encroachment, and thatch buildup were monitored. Highest quality was found where turf was mowed twice weekly with a conventional rotary mower with clippings returned and received 300 kg N ha–1 yr–1. Quality ratings for turf mowed with the mulching mower were equal to or significantly lower than ratings for turf mowed with a conventional rotary mower with clippings returned on 13 of the 17 rating dates. Thatch buildup and weed encroachment responded to N level, with more thatch and fewer weeds at the highest N level.
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