S-Metolachlor Compared with Metolachlor on Yellow Nutsedge (Cyperus esculentus) and Peanut (Arachis hypogaea)1

Grichar, W. James; Lemon, Robert G.; Brewer, Kevin; Minton, Brad W.

doi:10.1614/0890-037x(2001)015[0107:smcwmo]2.0.co;2

Cited by 22 publications

(26 citation statements)

References 17 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Peanut stunting with metolachlor has been noted in other studies [20,21,38,53]. In Georgia, early-season peanut growth suppression was related to metolachlor rate [20].…”

Section: Peanut Stuntsupporting

confidence: 53%

Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems

Grichar¹,

Dotray

2012

International Journal of Agronomy

View full text Add to dashboard Cite

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.

show abstract

“…Peanut stunting with metolachlor has been noted in other studies [20,21,38,53]. In Georgia, early-season peanut growth suppression was related to metolachlor rate [20].…”

Section: Peanut Stuntsupporting

confidence: 53%

Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems

Grichar¹,

Dotray

2012

International Journal of Agronomy

View full text Add to dashboard Cite

show abstract

“…Dimethenamid alone caused almost no peanut stunting, while flumioxazin plus dimethenamid resulted in 6% or less peanut stunt. Grichar et al (2001) reported variable peanut stunt with metolachlor PRE, where stunting ranged from 5% or less with metolachlor at 1.7 kg/ha to greater than 20% with metolachlor at 4.5 kg/ha.…”

Section: And 2000 Studiesmentioning

confidence: 99%

Interaction of Flumioxazin with Dimethenamid or Metolachlor in Peanut (Arachis hypogaea L.)1

Grichar¹,

Besler²,

Dotray³

et al. 2004

Peanut Science

View full text Add to dashboard Cite

Field studies were conducted in various peanut growing regions of Texas and Georgia to study peanut response to flumioxazin alone or in combination with dimethenamid or metolachlor. In south Texas during 1997, flumioxazin plus metolachlor resulted in greater than 45% peanut stunt, while flumioxazin plus dimethenamid caused~20% peanut stunt. This stunting was attributed to cool, wet growing conditions. Peanut yields in flumioxazin plus metolachlor-treated plots were reduced 58% from peanut in the non-treated check. In 1999 and 2000, flumioxazin plus dimethenamid or metolachlor resulted in 15% or greater peanut stunt, but stunting was not constant across weather conditions or locations. In west Texas and Georgia no peanut stunting with flumioxazin was noted. At the Levelland, TX location, flumioxazin at 0.07 kg/ha plus metolachlor at 1.1 kg/ha reduced peanut yield 32% when compared with the non-treated check; while at the Pearsall, TX location, metolachlor or dimethenamid at 1.1 kg/ha, flumioxazin at 0.07 kg/ha plus dimethenamid at 1.5 kg/ ha, and flumioxazin at 0.1 kg/ha plus dimethenamid at 1.1 kg/ha reduced peanut yield 24 to 48% when compared with the non-treated check. No yield reduction was noted in Georgia.Key Words: Dual, Frontier, peanut stunting, Valor, yield.Flumioxazin is aN-phenyl phthalamide soil-applied herbicide that received a federal label for use in peanut in 2001. Flumioxazin inhibits the enzyme protoporphyrinogen oxidase (Yoshida et al., 1991;Anderson et al., 1994; Hatzios, 1998 Lack of yellow nutsedge (Cyperus esculentus L.) control with flumioxazin in other studies (Eastin et al., 1993;Wilcut, 1997) suggest the need for a chloroacetamide herbicide when this weed is present. Askew et al. (1999) reported that metolachlor PRE complemented a flumioxazin-based program by controlling goosegrass [Eleusine indica (L.) Gaertn.] and yellow nutsedge. Scott et al. (2001) reported that metolachlor alone applied preplant incorporated (PPI) or metolachlor followed by (tb) flumioxazin PRE controlled at least 86% yellow nutsedge.The use of flumioxazin in peanut has resulted in plant injury. reported that using a dinitroaniline herbicide in a system with flumioxazin PRE tb imazethapyr or lactofen applied postemergence (POST) increased the amount of peanut stunting over pendimethalin or flumioxazin alone. For this study, metolachlor plus flumioxazin PRE fb lactofen POST resulted in greater than 10% peanut stunt when rated 6 wk after application (WAP).In North Carolina, Askew et al. (1999) reported that flumioxazin at 0.07 and 0.11 kg/ha injured peanut 45 and 62%, respectively, when rated 2 WAP. Peanut stunting of greater than 60% was followed by as much as 35% discoloration, which was characterized as necrotic spots on foliage. These symptoms were consistent with other studies (Yoshida et al., 1991). Askew et al. (1999) speculated that injury was caused by cold, wet conditions during 2 wk after PRE application. Flumioxazin enters plants mainly by shoot and root uptake, and plant injury can be avoided...

show abstract

Section: Introductionmentioning

confidence: 99%

“…Other common K3 herbicides include acetochlor, alachlor, butachlor, dimethenamid-p, flufenacet, Smetolachlor, and propachlor (Senseman 2007). Smetolachlor is frequently used in peanut for the control of various weeds including yellow nutsedge (Cyperus esculentus L.) and Benghal dayflower (Commelina benghalensis L.) (Grichar et al 2001;Grichar et al 2008;Prostko et al 2005).Little information about the tolerance of legume crops to pyroxasulfone has been published in the literature. Although pyroxasulfone was initially targeted for PRE weed control in corn, soybean has shown good tolerance The soil type at the Ponder Research Station was a Tifton sand with 96% sand, 2% silt, 2% clay, 1.2% organic matter, and pH 6.0.…”

mentioning

confidence: 99%

Peanut Tolerance to Pyroxasulfone

et al. 2011

View full text Add to dashboard Cite

Due to limited hectares and production in comparison to field corn, soybean, and wheat, commercial research and development efforts by major manufacturers for potential new peanut herbicides are minimal. Therefore, new herbicides developed for large hectare crops should be evaluated for potential use in peanut. Field trials were conducted in Ty Ty and Plains Georgia in 2007 and 2008 to evaluate the tolerance of peanut to PRE and POST applications of pyroxasulfone at five rates (0, 120, 240, 360, and 480 g ai/ha). Pyroxasulfone did not cause significant peanut injury at the Ty Ty location. In Plains, PRE applications of pyroxasulfone caused significant crop stunting, particularly at the 360 and 480 g/ha rates. In Ty Ty, PRE applications of pyroxasulfone also resulted in greater expression of tomato spotted wilt virus than POST applications. Peanut yields were not reduced by any rate or timing of pyroxasulfone. These results suggest that pyroxasulfone may have some potential to be utilized in peanut.Key Words: crop injury, tomato spotted wilt virus, yield.In 2010, peanut was planted on 522,000 ha in the U.S. (Anonymous 2011). In contrast, field corn, soybean, and wheat were planted on 36,000,000, 31,000,000, and 22,000,000 ha, respectively (Anonymous 2011). Consequently, commercial research and development efforts for new herbicides are focused in these crops and not in peanut Pyroxasulfone is an inhibitor of very-longchain-fatty acids and should be categorized within the K3 group of herbicides (Tanetani et al. 2009). Other common K3 herbicides include acetochlor, alachlor, butachlor, dimethenamid-p, flufenacet, Smetolachlor, and propachlor (Senseman 2007). Smetolachlor is frequently used in peanut for the control of various weeds including yellow nutsedge (Cyperus esculentus L.) and Benghal dayflower (Commelina benghalensis L.) (Grichar et al. 2001;Grichar et al. 2008;Prostko et al. 2005).Little information about the tolerance of legume crops to pyroxasulfone has been published in the literature. Although pyroxasulfone was initially targeted for PRE weed control in corn, soybean has shown good tolerance The soil type at the Ponder Research Station was a Tifton sand with 96% sand, 2% silt, 2% clay, 1.2% organic matter, and pH 6.0. The soil type at the Southwest Experiment Station was a Greenville sandy loam with 71% sand, 13% silt, 16% clay, 1% organic matter, and pH 6.0. Cultivars, planting dates, inverting, and harvest dates are presented in Table 1. Common production practices and Cooperative Extension recommendations were used at all times. Supplemental irrigation was applied as needed.Herbicide treatments were arranged in a factorial design that included two application timings (PRE or POST) and five pyroxasulfone rates (0, 120, 240, 360, and 480 g ai/ha). All treatments were replicated four times. PRE treatments were activated with irrigation within 48 hours of application. POST treatments of pyroxasulfone were applied between 44 and 51 days after peanut planting and included a non-ionic surfactant...

show abstract

S-Metolachlor Compared with Metolachlor on Yellow Nutsedge (Cyperus esculentus) and Peanut (Arachis hypogaea)¹

Cited by 22 publications

References 17 publications

Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems

Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems

Interaction of Flumioxazin with Dimethenamid or Metolachlor in Peanut (Arachis hypogaea L.)1

Peanut Tolerance to Pyroxasulfone

Contact Info

Product

Resources

About