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首页> 外文期刊>Weed Technology: A journal of the Weed Science Society of America >Mesotrione plus prodiamine for smooth crabgrass (Digitaria ischaemum) control in established bermudagrass turf
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Mesotrione plus prodiamine for smooth crabgrass (Digitaria ischaemum) control in established bermudagrass turf

机译：甲基磺草酮加丙二胺可稳定已建立的百慕大草皮中的光滑马唐（Digitaria ischaemum）

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Crabgrass species are problematic weeds in bermudagrass turf that can be controlled by PRE herbicide applications. Because of the difficulty in predicting crabgrass emergence and other prevailing management constraints, PRE herbicide applications are not always properly timed. Mesotrione controls crabgrass both PRE and POST; however, relatively short soil-residual activity limits its use as a PRE herbicide. Two experiments were conducted to evaluate smooth crabgrass control with PRE applications of mesotrione plus prodiamine. The first experiment evaluated the influence of application timing on the efficacy of mesotrione-plus-prodiamine combinations. Applications were made every 2 wk from March 15 to May 24. Mesotrione plus prodiamine controlled smooth crabgrass more consistently across all application dates than either mesotrione or prodiamine applied alone. The second experiment evaluated mesotrione along with current PRE and early POST herbicide treatments used for control of crabgrass. When applied at one to two tillers growth stage, mesotrione plus prodiamine controlled smooth crabgrass 99% when rated on August 31. Bermudagrass injury from mesotrione ranged from 9 to 44%, but did not result in any reduction in turf plant density. Mesotrione plus prodiamine is an effective tank mixture when prodiamine alone is not applied in a timely fashion; however, variable and excessive turf injury is a potential impediment to mesotrione use on bermudagrass turf.
机译：蟹草物种是百慕大草皮中有问题的杂草，可以通过使用PRE除草剂加以控制。由于难以预测马尾草的出现和其他普遍存在的管理限制，因此PRE除草剂的施用并不总是适当的时机。甲基磺草酮可同时控制马尾草的PRE和POST;然而，相对短的土壤残留活性限制了其作为PRE除草剂的用途。进行了两个实验，以评估甲基磺草酮加丙二胺的PRE施用对顺滑马尾草的防治效果。第一个实验评估了施用时间对甲基磺草酮加丙二胺组合功效的影响。从3月15日至5月24日每2周进行一次施用。与单独施用甲基磺草酮或丙二胺相比，甲基磺草酮加丙二胺在所有施用日期期间控制的光滑马尾草更为一致。第二个实验评估了甲基磺草酮以及目前用于防治马尾草的PRE和早期POST除草剂处理。当在1至2个分till生长期施用时，甲基磺草酮加丙二胺控制的光滑马尾草在8月31日评级为99％。甲基磺草酮对百慕大草的伤害范围为9％至44％，但并未导致草皮植物密度降低。当不及时单独使用丙二胺时，甲基磺草酮加丙二胺是一种有效的罐混物。然而，可变的和过度的草皮损伤可能是在百慕大草皮上使用甲基磺草酮的潜在障碍。

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