Effects of Additives on the Efficacy, Uptake, and Translocation of the Methyl Ester of Thifensulfuron

Fielding, Robert J.; Stoller, E. W.

doi:10.1017/s0043174500056332

Cited by 23 publications

(28 citation statements)

References 25 publications

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“…On the basis of reports of efficacy in the literature, it was expected that velvetleaf seedling mortality would be much greater (70 to 100%) than that observed here (Buhler et al 1990;Fielding and Stoller 1990;Hart and Penner 1993;Jordan et al 1997;Krausz et al 1995;Mills and Witt 1989;Niekamp and Johnson 2001). The reason for reduced mortality may be that these experiments were conducted in the absence of competition from the crop.…”

Section: Mortalitymentioning

confidence: 68%

Growth response of velvetleaf to three postemergence herbicides

Murphy

Lindquist

2002

Weed Science

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Knowledge of how reduction in the rate of herbicide application or rotation of their mode of action influences weed growth will provide insight into how successful these practices will be in an integrated weed management program. Field experiments were conducted in 1996 and 1997 to quantify velvetleaf growth response to three postemergence herbicides, each with a different mode of action. A monoculture of velvetleaf was treated with halosulfuron, dicamba, and flumiclorac at 0, 0.10, 0.25, 0.50, 0.75, and 1.0 ϫ the labeled rate for weed control in corn. Percent plant mortality increased with rate of application; the greatest mortality occurred in flumiclorac treatments in 1996 and in halosulfuron and flumiclorac treatments in 1997. Growth rate temporarily decreased as application rate increased. Maximum height decreased as rate of application increased, with the dicamba treatment resulting in the greatest (27%) reduction. Early-season leaf area index decreased with increasing rate of application, the greatest reduction occurring with halosulfuron (1997) and flumiclorac (1996 and 1997) treatments. The number of leaves produced per plant was temporarily reduced by all treatments, but treatment with dicamba later resulted in larger numbers of small leaves. The number of velvetleaf seed capsules produced per surviving plant was not reduced by any treatment, but the number of capsules per square meter was reduced by the 0.5 ϫ rate of flumiclorac (1996) and the 0.5and 1.0 ϫ rates of halosulfuron (1997). Research is needed to evaluate whether the temporary suspension of velvetleaf growth after herbicide treatment is sufficient to prohibit crop yield reduction and velvetleaf capsule production.

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Section: Mortalitymentioning

confidence: 68%

Growth response of velvetleaf to three postemergence herbicides

Murphy

Lindquist

2002

Weed Science

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“…The weed control spectrum of thifensulfuron may be broadened with fertilizer solutions such as a 28% N solution containing urea and ammonium nitrate (UAN) as a spray additive. Fielding and Stoller (1990) reported increased velvetleaf (Abutilon theophrasti Medik.) con-trol with the addition of 28% UAN to thifensulfuron applied with X-77 NIS at 0.25% v/v.…”

Section: Introductionmentioning

confidence: 99%

Soybean (Glycine max) Response to Thifensulfuron and Bentazon Combinations

Hart

Roskamp²

1998

Weed technol.

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Field studies were conducted in 1995 and 1996 at three locations in Illinois to determine soybean response to combinations of thifensulfuron and bentazon. Thifensulfuron was applied at 2.2 to 8.8 g ai/ha alone or in combination with 280 to 560 g/ha of bentazon. Soybean injury 30 d after treatment ranged from 0 to 22% when thifensulfuron was applied alone at 2.2 g/ha. Increasing thifensulfuron rate to 8.8 g/ha increased soybean injury to a range of 12 to 44%. Soybean grain yield was significantly reduced compared to the yield of untreated soybean when thifensulfuron was applied at 4.4 and 8.8 g/ha in two of five and four of five experiments, respectively. The addition of bentazon to thifensulfuron consistently reduced soybean injury and stunting. In many cases, increasing the bentazon rate to 420 g/ha decreased soybean injury from thifensulfuron to a greater extent than 280 g/ha. In cases where thifensulfuron decreased soybean yield, the addition of 420 or 560 g/ha of bentazon restored yields to levels that were not lower than untreated soybeans. These studies demonstrate that thifensulfuron at 2.2 to 8.8 g/ha in combination with bentazon at 420 g/ha may be safely applied to soybean for broadleaf weed control.

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“…The most plausible explanation for increased injury is presence of VAN. Fielding and Stoller (1990) reported that the addition of V AN to thifensulfuron resulted in greater injury to soybean compared to thifensulfuron applied alone.…”

mentioning

confidence: 99%

“…V rea ammonium nitrate was not applied when herbicides were applied alone. Fielding and Stoller (1990) Influence ofProhexadione Calcium on Herbicide Efficacy. The interaction ofexperiment by herbicide and the main effect ofprohexadione calcium were significant for pitted morningglory control.…”

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confidence: 99%

Interaction of Prohexadione Calcium with Agrichemicals Applied to Peanut (Arachis hypogaea L.)

et al. 2002

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Avariety of pesticides and foliar fertilizers are applied to emerged peanut. Defining interactions among these agrichemicals is important when formulating pest management and production strategies. Research was conducted in North Carolina during 1999 and 2000 to evaluate interactions among prohexadione calcium at 140 g ail ha applied with various commercially available fungicides, insecticides, herbicides, and foliar fertilizers. Agrichemical mixtures were applied when peanut vines reached 50% row closure. Prohexadione calcium alone was applied approximately 2 wk later. Twenty-eight percent urea ammonium nitrate was included with prohexadione calcium. In a second set of experiments, control of pitted morningglory (Ipomoea lacunosa L.) and yellownutsedge (Cyperus esculentusL.) byimazapic plus 2,4-DB, acifluorfen plus bentazon plus 2, 4-DB, bentazon plus 2, 4-DB,acifluorfen plus 2, 4-DB,pyridate plus 2,4-DB, and 2,4-DB applied alone or with prohexadione calcium were evaluated. Large crabgrass [Digitaria sanguinalis (L.) Scop.] control by sethoxydim and clethodim alone or with prohexadione calcium was evaluated also. Fungicides, insecticides, and foliar fertilizers did not affect efficacyofprohexadione calcium with respect to visible injury to peanut, row visibility, or maintenance of short stems. Slightly higher injury was

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Effects of Additives on the Efficacy, Uptake, and Translocation of the Methyl Ester of Thifensulfuron

Cited by 23 publications

References 25 publications

Growth response of velvetleaf to three postemergence herbicides

Growth response of velvetleaf to three postemergence herbicides

Soybean (Glycine max) Response to Thifensulfuron and Bentazon Combinations

Interaction of Prohexadione Calcium with Agrichemicals Applied to Peanut (Arachis hypogaea L.)

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