Annual Broadleaf Control With KIH-485 in Glyphosate-Resistant Furrow-Irrigated Corn

King, Steven R.; Garcia, Josefina

doi:10.1614/wt-07-169.1

Cited by 29 publications

(39 citation statements)

References 8 publications

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“…P y roxasu lfone(3-[5-(dif luoromet hoxy)-1-met hy l-3-(trifluoromethyl) pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole; code name KIH-485) is a novel preemergence herbicide for use in wheat, 1) corn, [2][3][4][5][6] soybean 7) and other crops. 1,[8][9][10][11] This herbicide is effective on both grass and broadleaf weeds.…”

Section: Introductionmentioning

confidence: 99%

Role of metabolism in the selectivity of a herbicide, pyroxasulfone, between wheat and rigid ryegrass seedlings

et al. 2013

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Metabolism of pyroxasulfone in a tolerant crop, wheat and a susceptible plant, rigid ryegrass, was studied using 14 C-pyroxasulfone. The main metabolites were a cysteine conjugate of the isoxazoline ring (M-26), deaminated M-26 (M-29) and a glucose conjugate of M-29, suggesting that the main metabolic route in both plants was the cleavage of the methylenesulfonyl linkage caused by glutathione conjugation. The difference in the metabolic activity was assumed to be one of the factors in determining the selectivity of pyroxasulfone between wheat and rigid ryegrass.

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Section: Introductionmentioning

confidence: 99%

Role of metabolism in the selectivity of a herbicide, pyroxasulfone, between wheat and rigid ryegrass seedlings

et al. 2013

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“…Pyroxasulfone, formerly KIH-485, is a new broad-spectrum herbicide being developed for preemergence (PRE) (King and Garcia 2008;King et al 2007;Geier et al 2006;Knezevic et al 2009;and Steele et al 2005). From this list, Palmer amaranth and Texas millet are of particular interest since these are two of the most common and troublesome weeds of peanut (Webster 2009).…”

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Peanut Tolerance to Pyroxasulfone

et al. 2011

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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...

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“…Pyroxasulfone applied at rates between 60 and 180 g ai/ha has been documented to control: Amaranthus spp., Lolium spp., Urochloa spp., goosegrass (Eleusine indica L.), crowfootgrass (Dactyloctenium aegyptium L), and Digitaria spp. (Geier et al 2006;Hulting et al 2012;King and Garcia 2008;Koger et al 2008;Knezevic et al 2009;Nurse et al 2011).…”

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confidence: 99%

“…Pyroxasulfone use in corn, cotton (Gossypium hirsutum L.), soybean, and wheat (Triticum aestivum L.) tolerance has been thoroughly described (Cahoon et al 2012;Eure et al 2013;Geier et al 2006;Hulting et al 2012;King and Garcia 2008;Koger et al 2008). However, very little is known concerning peanut response to pyroxasulfone following PRE applications.…”

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Peanut Cultivar Response to Preemergence Applications of Pyroxasulfone

2015

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Pyroxasulfone is a residual herbicide developed for use in several agronomic crops such as corn (Zea mays L.), soybean (Glycine max L.), wheat (Triticum aestivum L.), and sunflower (Helianthus annuus L.). Pyroxasulfone provides effective preemergence (PRE) control of annual grasses and broadleaf weeds, but little is known about peanut cultivar tolerance. Therefore, field trials were conducted in Georgia during 2012 and 2013 to evaluate peanut cultivars 'Georgia-06G', 'Georgia Greener', and 'Tifguard' response to pyroxasulfone applied PRE at 0, 120, or 240 g ai/ ha. Greater stunting occurred during 2012 than 2013. Peanut stunting 10 days after planting (DAP) during 2012 and 2013 ranged from 38 to 55% and 3 to 11%, respectively. At 10 DAP, greater injury was observed in 'Tifguard' as compared to 'Georgia-06G' with pyroxasulfone at 120 g ai/ha. 'Georgia Greener' was injured more than 'Tifguard' following the 240 g ai/ha rate of pyroxasulfone. By 120 DAP, peanut had recovered substantially from stunting caused by PRE applications of pyroxasulfone with no cultivar interactions. Peanut yield was influenced by pyroxasulfone rate when applied PRE. Peanut yield was 7,140 kg/ha in treatments that did not include pyroxasulfone. Treatments that included pyroxasulfone at 120 g ai/ha yielded similar to treatments without pyroxasulfone. Peanut yield was reduced to 6,750 kg/ha (7%) following pyroxasulfone applied at 240 g ai/ha. When combined over pyroxasulfone rate, 'Georgia-06G' produced greater yields than the other cultivars.

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Annual Broadleaf Control With KIH-485 in Glyphosate-Resistant Furrow-Irrigated Corn

Cited by 29 publications

References 8 publications

Role of metabolism in the selectivity of a herbicide, pyroxasulfone, between wheat and rigid ryegrass seedlings

Role of metabolism in the selectivity of a herbicide, pyroxasulfone, between wheat and rigid ryegrass seedlings

Peanut Tolerance to Pyroxasulfone

Peanut Cultivar Response to Preemergence Applications of Pyroxasulfone

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