Effects mowing height of seashore paspalum on Kyllinga brervifolia control with CaoPingNing 71#

The study was conducted to determine the effects of mowing height on Kyllinga brervifolia control with CaoPingNing 71# and leaf color, growth vigor of seashore paspalum (Paspalum vaginatum) in Dongguan Hill View Golf Club during 2007 and 2008. The results showed that applied Caopingning 71# at 1 kg/hm2 to control K. brervifolia at the mowing height of 10 mm, 15 mm, 20 mm, 25 mm,30 mm and 35 mm at 5-7 leave stage, the control effectiveness was 93.9%, 83.4%, 80.8%, 74.1%, 58.3% and 39.7% respectively, after 14 days. 28 days after the control effectiveness was 100%, 99.5%, 96.8%, 94.2%, 80.7% and 75.5%, respectively. K.brervifolia fresh weight control effectiveness was 100%, 99.7%, 98.1%, 94.1%, 91.6% and 90.6%. The effectiveness was improved with the decreasing mowing height of seashore paspalum, and the best mowing height was below 25 mm. There was no bad effect of 1 kg/hm2 Caopingning 71# applied to different mowing height of seashore paspalum on leaf color and growth vigor. The trial demonstrated in Citic Shantou Golf Club in 2008. It was further proved that effectiveness of K. brervifolia control with CaoPingNing 71# were more than 85% in the mowing height below 25 mm for seashore paspalum.