Efficacy of Trifluralin Compared to Ethalfluralin Applied Alone and Co-Applied with Halosulfuron for Weed Management in White Bean

• 作者: Peter H. Sikkema
• 来源期刊: 农业科学(英文)
• 学科: 数学
• 关键词: ALS Inhibitor Herbicides Crop Injury Dinitroanaline Herbicides Navy Bean Phaseolus vulgaris Sulfonylurea Herbicides
• 年，卷（期）: 2020,（9）
• 页码范围: 837-848
• 页数: 12页
• 分类号: O17

摘要

There are a limited number of herbicides registered for weed management in white bean production in Ontario, Canada. Five field experiments were completed in Ontario from 2016 to 2018 to compare the efficacy of trifluralin and ethalfluralin applied alone and in combination with halosulfuron, applied preplant incorporated (PPI), for weed control efficacy and white bean tolerance and seed yield. At 2 and 4 WAE, there was no white bean injury from the herbicide treatments evaluated. Trifluralin applied PPI provided up to 32%, 99%, 13%, 99%, 27%, 99% and 99% control of velvetleaf, redroot pigweed, common ragweed, common lambsquarters, wild mustard, barnyardgrass and green foxtail, respectively. Trifluralin and ethalfluralin provide similar control of velvetleaf, redroot pigweed, barnyardgrass and green foxtail control, however, ethalfluralin is slightly more efficacious on common ragweed, common lambsquarters and wild mustard. Halosulfuron (35 g<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>ha^{<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>1}), applied PPI, provided as much as 76%, 98%, 96%, 96%, 100%, 19% and 23% control of velvetleaf, redroot pigweed, common ragweed, common lambsquarters, wild mustard, barnyardgrass and green foxtail, respectively. Trifluralin (600 or 1155 g<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>ha^{<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>1}) + halosulfuron (35 g<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">