Response of winter wheat (<i>Triticum aestivum</i>L.) to autumn applied saflufenacil

• 作者: Christy Shropshire Lynette R. Brown Nader Soltani Peter H. Sikkema
• 来源期刊: 农业科学(英文)
• 学科: 医学
• 关键词: CEREALS Injury Height HERBICIDE Tolerance Yield
• 年，卷（期）: 2012,（5）
• 页码范围: 755-758
• 页数: 4页
• 分类号: R73

摘要

There is limited information on the effect of saflufenacil application timing when applied in autumn to winter wheat. Five field experiments were conducted over a three-year period (2007- 2009) at two locations (Ridgetown and Exeter, Ontario) to evaluate the tolerance of winter wheat to autumn applications of saflufenacil applied pre-plant (PP), pre-emergence (PRE), or post-emergence (POST) at 25, 50, 100 and 200 g a.i. ha-1. As the dose of saflufenacil increased, the amount of injury observed also increased. By May of the following spring, injury ranged from 11 to 20% at the 25 to 200 g a.i. ha-1 doses of saflufenacil. Saflufenacil applied PP and PRE caused little to no injury in winter wheat. Saflufenacil applied POST and POST + Merge in the autumn caused up to 41% injury with the POST + Merge application being the most injurious. However, this injury was transient with no effect on winter wheat height or yield the following summer.