Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems

Abstract

Field studies were conducted from 2007 through 2009 to determine weed efficacy and peanut (Arachis hypogaea L.) response to herbicide systems that included ethalfluralin applied preplant incorporated. Control of devil's claw (Proboscidea louisianica (Mill.) Thellung), yellow nutsedge (Cyperus esculentus L.), Palmer amaranth (Amaranthus palmeri S. Wats.), and puncturevine (Tribulus terrestris L.) was most consistent with ethalfluralin followed by either imazapic or imazethapyr applied postemergence. Peanut stunting was 19% when paraquat alone was applied early-postemergence. Stunting increased to greater than 30% when ethalfluralin applied preplant incorporated was followed by S-metolachlor applied preemergence and paraquat applied earlypostemergence. Stunting (7%) was also observed when ethalfluralin was followed by flumioxazin plus S-metolachlor applied preemergence with lactofen applied mid-postemergence. Ethalfluralin followed by paraquat applied early-postemergence reduced peanut yield when compared to the nontreated check. Ethalfluralin applied preplant incorporated followed by imazapic applied mid-postemergence provided the greatest yield (6220 kg/ha). None of the herbicide treatments reduced peanut grade (sound mature kernels plus sound splits) when compared with the nontreated check.

Geïntegreerde bestrijding van knolcyperus : Resultaten van een literatuurstudie naar alternatieven voor monam

“…Solo of in een behandelmix bleek effectiviteit van halosulfuron (Dittmar et al, 2012;Felix & Newberry, 2012;Riar & Norsworthy, 2011), imazapic (Ducar et al, 2009;Grichar & Dotray, 2012;Jordan et al, 2009), imazethapyr (Grichar & Dotray, 2012), imazosulfuron (Dittmar et al, 2012;Felix & Newberry, 2012;Riar & Norsworthy, 2011), propanil en quinclorac (Riar & Norsworthy, 2011), sulfentrazone en sulfosulfuron (Gannon et al, 2012), thiobencarb (Riar & Norsworthy, 2011) en trifloxysulfuron (Gannon et al, 2012). Of, en op welke termijn, deze herbiciden perspectief op een Nederlandse registratie hebben is niet bekend.…”

Smellmelon Control and Peanut Response to Flumioxazin and Paraquat Alone and in Combination

“…In other studies, herbicide systems that included paraquat have resulted in severe peanut stunting while the herbicide system which included flumioxazin plus S-metolachlor applied PRE followed by lactofen applied POST caused moderate peanut stunting (Grichar and Dotray 2012). Although paraquat is registered for use on peanut within 28 d after emergence, Johnson et al (1993) stated that paraquat use later than 28 d after emergence is discouraged due to the potential for crop injury with less time for plant recovery.…”

Interaction of Seedling Germination, Planting Date, and Flumioxazin on Peanut Physiology under Irrigated Conditions

“…Peanuts are very susceptible to competition from weeds as canopy closure occurs 8 to 10 weeks after planting, or not at all [9]. Optimal weed management includes beginning the peanut growing season weed-free using herbicides that allow the crop to become established without competition.…”