干旱区生态环境知识资源中心(Arid): Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa

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DOI	10.1002/cft2.20095
	Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa
	Devkota, Pratap; Bachie, Oli G.
通讯作者	Devkota, P (corresponding author), Univ Florida, IFAS, West Florida Res & Educ Ctr, 4253 Expt Dr, Jay, FL 32565 USA.
来源期刊	CROP FORAGE & TURFGRASS MANAGEMENT
EISSN	2374-3832
出版年	2021
卷号	7 期号:1
英文摘要	Alfalfa (Medicago sativa L.) is an important crop for the low desert region of southwestern United States. A field study was conducted to evaluate tolerance of established nondormant conventional alfalfa to saflufenacil applied during the summer slump. Treatments consisted of saflufenacil applied alone at 0.7 or 1.4 oz ac(-1), or saflufenacil at 0.7 oz ac(-1) tank-mixed with imazamox, bromoxynil, or metribuzin at 0.8, 6.0, or 16.0 oz ac(-1), respectively. Methylated seed oil (as surfactant) and ammonium sulfate (as adjuvant) were tank-mixed at 1 and 2.5% (v/v), respectively, to each herbicide treatment. At 2 d after treatment, alfalfa injury from saflufenacil at the lower rate was lowest (21%); whereas the injury was highest (48%) from saflufenacil plus bromoxynil treatment. The alfalfa injury progressed for 2 wk after treatment (WAT) and was >36% for all treatments except for saflufenacil at the lower rate. Crop recovery was observed about 2 WAT and minimal injury (<3%) occurred at 4 WAT. Alfalfa height was similar across herbicide treatments and the weed-free (non-treated) control. At 4 WAT, average alfalfa height for all treatments was 11 inches or greater. The alfalfa injury observed during the initial weeks did not translate into biomass yield reduction. Accordingly, there was no significant difference in alfalfa biomass yield among the treatments. Overall, alfalfa biomass yield was 0.57 and 0.47 ton ac(-1) or greater at 4 WAT (1st cutting) and 8 WAT (2nd cutting), respectively, after herbicide application. Our results illustrate that saflufenacil and its tank-mix with imazamox, bromoxynil, or metribuzin caused injury to nondormant conventional alfalfa during early weeks, but alfalfa recovered by 2 wk after herbicide application without height and biomass yield reduction.
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000646261800001
WOS关键词	WEED-CONTROL ; MEDICAGO-SATIVA ; DOWNY BROME ; HERBICIDES ; DORMANT ; YIELD
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352772
作者单位	[Devkota, Pratap] Univ Florida, IFAS, West Florida Res & Educ Ctr, 4253 Expt Dr, Jay, FL 32565 USA; [Bachie, Oli G.] Univ Calif Cooperat Extens Imperial Cty, 1050 Holton Rd, Holtville, CA 92250 USA
推荐引用方式 GB/T 7714	Devkota, Pratap,Bachie, Oli G.. Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa[J],2021,7(1).
APA	Devkota, Pratap,&Bachie, Oli G..(2021).Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa.CROP FORAGE & TURFGRASS MANAGEMENT,7(1).
MLA	Devkota, Pratap,et al."Evaluation of the summer slump application of saflufenacil on nondormant conventional alfalfa".CROP FORAGE & TURFGRASS MANAGEMENT 7.1(2021).