Peanut Cultivar Response to Flumioxazin Applied Preemergence and Imazapic Applied Postemergence Academic Article uri icon


  • Field studies were conducted during 2009 and 2010 in Texas at Yoakum and Lamesa to determine peanut cultivar response to flumioxazin applied preemergence (0.053, 0.107, and 0.214kgaiha1) and imazapic applied postemergence (0.035, 0.071, and 0.141kgaiha1). At Yoakum, two cultivars (Tamrun OL01, Tamrun OL07) were evaluated while at Lamesa, four cultivars (FlavorRunner 458, Tamrun OL01, Tamrun OL02, and Tamrun OL07) were evaluated. In 2009, no stunting was noted at Yoakum with any herbicide regardless of cultivar. At Lamesa, FlavorRunner 458 and Tamrun OL01 were stunted at least 6% with the 0.21kgha1rate of flumioxazin and 6 to 17% with the 0.07 and 0.14kgha1rate of imazapic. Tamrun OL02 was stunted by all rates of flumioxazin (5%) and imazapic (5 to 18%) while Tamrun OL07 was stunted by all rates of flumioxazin (6 to 12%) and imazapic (7 to 15%) with the exception of flumioxazin at 0.05kgha1. Flumioxazin did not have an effect on yield while all imazapic rates reduced yields when compared with the non-treated control. In 2010 at Yoakum, little (<2%) or no herbicide stunting was noted on any cultivar and only imazapic at 0.14kgha1caused significant stunting (7%). No yield differences were noted between herbicides regardless of cultivar. At Lamesa, all cultivars were affected (6 to 9% stunting) by herbicide treatments. No peanut stunting was noted with flumioxazin at 0.05kgha1while imazapic at 0.04kgha1and flumioxazin at 0.11kgha1resulted in 4 and 6% stunting, respectively. Flumioxazin at 0.21kgha1and imazapic at 0.07kgha1resulted in 12% stunting and imazapic at 0.14kgha1stunted peanut 19%. Both Tamrun OL01 and Tamrun OL07 produced lower yields (6369kgha1) than FlavorRunner 458 (7252kgha1). Tamrun OL02 yields were intermediate (6889kgha1). Peanut yields from herbicide treatments were not different from the non-treated control.

published proceedings


altmetric score

  • 0.25

author list (cited authors)

  • Grichar, W. J., Dotray, P. A., & Baring, M. R.

citation count

  • 2

complete list of authors

  • Grichar, WJ||Dotray, PA||Baring, MR

publication date

  • January 2013