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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #267563
Title: Evaluation of herbicide efficacy, injury and yield in white lupin (Lupinus albus L.)

Author
item FOLGART, ANIKA - Auburn University
item Price, Andrew
item KELTON, JESSICA - Auburn University
item VAN SANTEN, EDZARD - Auburn University
item WEHTJE, GLENN - Auburn University

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 10/7/2015
Publication Date: 11/26/2015
Citation: Folgart, A., Price, A.J., Kelton, J., Van Santen, E., Wehtje, G.R. 2015. Evaluation of herbicide efficacy, injury and yield in white lupin (Lupinus albus L.). In: Price, A., Kelton, J., Sarunaite, L., editors. Herbicides, Agronomic Crops and Weed Biology. https://doi.org/10.5772/61708
DOI: https://doi.org/10.5772/61708

Interpretive Summary: White lupin is of increasing interest in the southeastern USA as a winter legume cover crop or as mid-winter forage for ruminants. An experiment was conducted at two Alabama sites in 2007 and 2008 to evaluate herbicide efficacy provided by ten preemergence and nine postemergence herbicides as well as lupin injury and yield. Overall, several PRE applied herbicides caused less crop injury than POST herbicides while providing = 86% control of annual bluegrass, corn spurry, heartwing sorrel, henbit, and lesser swinecress six weeks after application. Grass-active herbicides, fluazifop and sethoxydim, provided = 95% control of annual bluegrass without causing lupin yield reduction. This research suggests there are several herbicides not currently registered that could be beneficial for use in US lupin production.

Technical Abstract: White lupin is of increasing interest in the southeastern USA as a winter legume cover crop or as mid-winter forage for ruminants. White lupins are poor weed competitors during early establishment which makes effective weed control necessary, however, only three herbicides are currently registered for use in lupin. An experiment was conducted at two Alabama sites in 2007 and 2008 to evaluate herbicide efficacy provided by ten PRE and nine POST herbicides as well as lupin injury and yield. Overall, PRE applied herbicides, particularly imazethapyr, linuron, and flumioxazin, caused less crop injury than POST herbicides while providing = 86% control of annual bluegrass, corn spurry, heartwing sorrel, henbit, and lesser swinecress six weeks after application. Grass-active herbicides, fluazifop and sethoxydim, provided greater than 95% of annual bluegrass control without causing unrecoverable lupin damage. Imazethapyr applied POST controlled shepherd’s purse (96% to 98%), cutleaf evening-primrose (81% to 96%) and wild radish (71% to 99%) without lupin injury. POST-directed spray applications of glyphosate and flumioxazin provided good weed control of corn spurry (80% to 98%) and winter vetch (71% to 95%) but caused significant crop injury due to drift. In general, grain yields were only reduced with the use of chlorimuron, diclosulam, glyphosate, and thifensulfuron. This research suggests there are several herbicides not currently registered that could be beneficial for use in US lupin production.