A study was conducted at the Louisiana State University Agricultural Center's H. Rouse Caffey Rice Research Station in 2017 and 2018 to evaluate a prepackaged mixture of clomazone plus pendimethalin applied delayed preemergence (DPRE) or POST within an herbicide residual overlay with saflufenacil, clomazone, or quinclorac. POST applications included penoxsulam or halosulfuron in combination with the second residual application. No differences were observed in barnyardgrass control (92 to 98) at 14 days after treatment (DAT). At 42 DAT, barnyardgrass treated with clomazone plus pendimethalin in combination with either clomazone or quinclorac at either timing was controlled 95 to 96. However, when saflufenacil was applied PRE, regardless of the POST herbicide or when saflufenacil was applied POST with halosulfuron, barnyardgrass control was reduced to 78 to 81, compared with 95 to 96 with the control with all other residual combinations. Yellow nutsedge and rice flatsedge control increased when treated with halosulfuron compared with penoxsulam across all evaluation dates. At 28 and 42 DAT, texasweed treated with saflufenacil PRE, regardless of POST applications, was controlled 83 and 87, respectively, and this was greater control than provided by clomazone or quinclorac applied PRE regardless of POST herbicide program.
展开▼
机译：2017 年和 2018 年在路易斯安那州立大学农业中心的 H. Rouse Caffey 水稻研究站进行了一项研究，以评估氯马松加二甲戊灵的预包装混合物，在除草剂残留物与沙氟芬那西、氯马松或喹氯酸的覆盖层中施用延迟预苗 （DPRE） 或 POST。POST应用包括戊磺草胺或氟磺隆与第二次残留应用相结合。在处理后 14 天 （DAT） 时，稗草对照组未观察到差异（92%-98%）。在42 DAT时，在任一时间用氯马松加二甲戊灵联合氯马松或喹氯酸处理的稗草控制在95%至96%。然而，当施用沙氟芬那西PRE时，无论使用POST除草剂或当沙氟芬那西与氟嘧磺隆一起施用POST时，稗草对照减少到78%至81%，而对照组则为95%至96%。在所有评估日期，与五嘧磺胺相比，使用氟嘧磺隆处理的黄坚果和稻平对照有所增加。在 28 和 42 DAT 时，无论施用 POST 如何，用沙氟芬那西 PRE 处理的德州草分别得到 83% 和 87% 的控制，这比氯马酮或喹氯酸施用 PRE 提供的控制更大，无论 POST 除草剂程序如何。
展开▼
