IMPROVING QUALITY OF BERMUDAGRASS POST-DORMANCY TRANSITION USING PARTIAL CONTROL TECHNIQUES

摘要：

　　evaluate several methods of partially controlling perennial ryegrass in bermudagrass post-dormancy.Experimental design was a randomized complete block with a 4 x 3 factorial treatment arrangement.Partial control applications were made one of three ways: blot,drip,or strip.Herbicide treatments evaluated included foramsulfuron applied once to 30% of the plot or twice to either 20% or 30% of the plot at 29 g ai ha-1 and trifloxysulfuron-sodium applied once to 30% of the plot at 23 g ai ha-1.A broadcast application of foramsulfuron was made in early July at 29 g ai ha-1 to remove remaining perennial ryegrass.In 2006 and 2007,drip and blot applications maintained higher turfgrass quality throughout the transition period,whereas strip applications reduced overall quality.Partial application techniques also impacted bermudagrass cover.All partial control treatments increased bermudagrass cover from 19 to over 30% at 20 days after partial control treatment (DAPT) at all locations.At 114 DAPT,cover was up to 15% higher in treated plots versus nontreated plots.Results indicate that partial control techniques can be a valuable tool when transitioning from overseeded perennial ryegrass to bermudagrass postdormancy.

关键词： blot application drip application foramsulfuron perennial ryegrass strip application trifloxysulfuron sodium

作者: K. A. Venner T. L. Mittlesteadt S. D. Askew

作者单位: Dept. ofPlant Pathol.,Physiol.,and Weed Sci.,Virginia PolytechnicInstitute and State Univ.,Blacksburg,VA 24061 USA

会议类型: 国际会议

会议名称: The 12th International Turfgrass Research Conference(第十二届国际草坪学术大会)

会议地点: 北京

会议语种:英文

页码: 707-711

在线出版日期: 2013-07-14（万方平台首次上网日期，不代表论文的发表时间）