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首页> 外文期刊>Weed Science: Journal of the Weed Science Society of America >Flucarbazone-sodium absorption, translocation, and metabolism in bermudagrass, Kentucky bluegrass, and perennial ryegrass.
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Flucarbazone-sodium absorption, translocation, and metabolism in bermudagrass, Kentucky bluegrass, and perennial ryegrass.

机译：百慕大草，肯塔基草和多年生黑麦草中的氟卡巴zone钠的吸收，转运和代谢。

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Perennial ryegrass is overseeded in bermudagrass and Kentucky bluegrass to improve turf quality, but selective control may be warranted for transition back to monostand turfgrass. Flucarbazone-sodium controls perennial ryegrass in bermudagrass and Kentucky bluegrass, but the physiological basis of selectivity has received limited investigation. Greenhouse and laboratory experiments were conducted to evaluate efficacy, absorption, translocation, and metabolism of flucarbazone-sodium in these grasses. Flucarbazone-sodium reduced perennial ryegrass shoot mass from the nontreated an average ~22 times and 3 times more than bermudagrass and Kentucky bluegrass at 4 wk after treatment, respectively. In laboratory experiments, foliar and root absorption of 14C-flucarbazone-sodium were similar among species. Bermudagrass distributed ~25% more foliar-absorbed 14C to nontreated shoots than Kentucky bluegrass and perennial ryegrass. From root applications, all grasses averaged 84% distribution of 14C to shoots. Bermudagrass and Kentucky bluegrass metabolized 100% and 74% of 14C-flucarbazone-sodium at 1 d after treatment (DAT), whereas perennial ryegrass metabolism measured 44, 58, and 65% at 1, 3, and 7 DAT, respectively. Bermudagrass, Kentucky bluegrass, and perennial ryegrass had 4, 4, and 2 metabolites after 7 d, respectively. Results suggest differential metabolism of flucarbazone-sodium is attributed to selectivity for controlling perennial ryegrass in bermudagrass and Kentucky bluegrass.
机译：多年生黑麦草在百慕大草和肯塔基州蓝草中过量播种，以提高草皮质量，但可能需要选择性控制以过渡回单株草皮草。 Flucarbazone-钠可控制百慕大草和肯塔基州蓝草中的多年生黑麦草，但选择性的生理基础尚未受到足够的研究。进行了温室和实验室实验，以评估氟草酮钠在这些草中的功效，吸收，转运和代谢。在处理后4周，未加处理的氟卡波-钠使多年生黑麦草的芽重平均分别比百慕大草和肯塔基蓝草高约22倍和3倍。在实验室实验中，物种间 14 C-氟卡巴zone钠的叶和根吸收相似。与未经处理的嫩芽相比，百慕大草向未处理的嫩枝上分配的叶吸收的 14 C多约25％，比肯塔基州的草和多年生黑麦草多。从根部应用来看，所有草平均 14 C分布在芽上的比例为84％。百慕大草和肯塔基州蓝草在治疗（DAT）后1 d代谢了100％和74％的 14 C-氟卡波zone钠，而多年生黑麦草的新陈代谢分别在1、3、44、58和65％时发生代谢，和7 DAT。百慕大草，肯塔基蓝草和多年生黑麦草在7天后分别具有4、4和2种代谢产物。结果表明，氟卡波zone钠的新陈代谢差异归因于控制百慕大草和肯塔基州蓝草中多年生黑麦草的选择性。

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