Absorption and Translocation of SC-0051 in Corn and Soybean

Armel, Gregory R.; Mayonado, David J.; Hatzios, Kriton K.; Wilson, H. R.

doi:10.1614/wt-02-114

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…Seven DAT, most of the absorbed 14 C-sulcotrione remained in the treated leaf and less than 14% was translocated to other organs (Table 2). This is lower than amounts observed by Armel et al (2004), however, the conditions of experiment were different (higher dose and development stage of maize in our study). The major sinks were stem, young leaves and roots, in agreement with the findings of Armel et al (2004).…”

Section: Resultscontrasting

confidence: 85%

“…For sulcotrione, very few data have been published in the literature. The absorption of sulcotrione by foliage of maize and soybean is higher than by roots; the translocation is rapid with accumulation of the herbicide in shoots and new growth (Armel et al, 2004). To our knowledge, no other data are available, neither concerning the fate in soil of sulcotrione residues in crops or weeds.…”

Section: Introductionmentioning

confidence: 97%

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Delayed degradation in soil of foliar herbicides glyphosate and sulcotrione previously absorbed by plants: Consequences on herbicide fate and risk assessment

2009

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Following application, pesticides can be intercepted and absorbed by weeds and/or crops. Plants containing pesticides residues may then reach the soil during the crop cycle or after harvest. However, the fate in soil of pesticides residues in plants is unknown. Two commonly used foliar herbicides, glyphosate and sulcotrione, (14)C-labeled, were applied on leaves of oilseed rape and/or maize, translocation was studied, and then soil incubations of aerial parts of plants containing herbicides residues were performed. Soil treated directly with herbicides was used as control. The effects of adjuvants on herbicide plant-absorption and subsequent soil-degradation were also investigated comparing herbicides application as active ingredients and as commercial formulations. The fate in soil of herbicides residues in plants was different from that of control, and different for glyphosate and sulcotrione. Mineralization in soil of glyphosate in crops decreased compared to control, and amounts of (14)C-extractable residues, mainly composed by the metabolite aminomethylphosphonic acid (AMPA), and non-extractable residues (NER) increased. In contrast, mineralization in soil of sulcotrione in maize increased compared to control, with a decrease in the (14)C-extractable residues and an increase in NER. The fate of both herbicides was influenced by the type of plant organ in which herbicide was incorporated, because of differences in herbicides bioavailability and organs biodegradability, but not by adjuvants. Absorption of both herbicides in plant delays their subsequent soil-degradation, and particularly, glyphosate persistence in soil could increase from two to six times. The modifications of herbicide degradation in soil due to interception by plants should be considered for environmental risks assessment.

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Section: Resultscontrasting

confidence: 85%

Section: Introductionmentioning

confidence: 97%

Delayed degradation in soil of foliar herbicides glyphosate and sulcotrione previously absorbed by plants: Consequences on herbicide fate and risk assessment

2009

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“…Absorption. Absorption of 14 C mesotrione was low in both grain sorghum hybrids (Table 1) and lower than mesotrione absorption in corn reported by others (Armel et al 2004). The low foliar mesotrione absorption in sorghum may be due to the presence of a large number of prickle hairs (trichomes with swollen bases and sharp tips) and higher amount of loosely bound leaf wax (Cannon and Kummerow 1957;Traore et al 1989).…”

Section: Resultsmentioning

confidence: 60%

Absorption, Translocation, and Metabolism of Mesotrione in Grain Sorghum

Abit

Al‐Khatib

2009

Weed sci.

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Studies were conducted under controlled growth conditions to determine whether differential absorption, translocation, or metabolism was the basis for the differential response of grain sorghum hybrids to mesotrione. Mesotrione-tolerant (‘Dekalb DKS35-70’) and mesotrione-susceptible (‘Pioneer 84G62’) grain sorghum hybrids were treated with14C-labeled mesotrione. At 1 d after treatment (DAT), absorption was 7% in both hybrids; at 7 DAT, however, absorption remained nearly steady in Pioneer 84G62 but increased to 12% in Dekalb DKS35-70. Translocation of14C-mesotrione in sorghum hybrids was similar with less than 30% of the absorbed herbicide translocated out of the treated leaf by 7 DAT. A distinct metabolite of14C-mesotrione was separated in both hybrids at 3 DAT. The amount of mesotrione parent compound that remained in Pioneer 84G62 and DKS35-70 was 72 and 65%, respectively. Dekalb DKS35-70 had significantly less mesotrione at 3 DAT than Pioneer 84G62 did, but the amount of mesotrione was similar for both hybrids at 5 and 7 DAT. Rapid metabolism of mesotrione may help explain the differential response of grain sorghum hybrids.

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“…), and soybean [Glycine max (L.) Merr.] (Armel et al 2004(Armel et al , 2005Mitchell et al 2001). In corn, common lambsquarters, giant foxtail, and ivyleaf morningglory, foliar uptake was rapid, with 55 to 90% of applied radioactivity being absorbed within 24 h (Mitchell et al 2001).…”

Section: Resultsmentioning

confidence: 99%

“…Mesotrione exhibits acropetal and basipetal translocation after foliar absorption, but susceptible species have shown greater translocation of mesotrione than tolerant species (Armel et al 2004;Mitchell et al 2001). Tank mixtures that reduce this translocation pattern could be antagonistic with mesotrione or other HPPD inhibitors.…”

Section: Resultsmentioning

confidence: 99%

Triclopyr Reduces Foliar Bleaching from Mesotrione and Enhances Efficacy for Smooth Crabgrass Control by Altering Uptake and Translocation

McCullough

2016

Weed technol.

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Turfgrass managers can reduce foliar bleaching of smooth crabgrass from mesotrione by tank-mixing triclopyr ester with applications. These tank mixtures also have potential to enhance smooth crabgrass control compared to mesotrione alone. The objectives of this research were to evaluate the influence of triclopyr on the efficacy, absorption, and translocation of mesotrione in multitiller smooth crabgrass. In field experiments, tank-mixing triclopyr at 560 or 1,120 g ae ha−1with mesotrione at 140 g ai ha−1applied sequentially or at 280 g ha−1applied singly provided excellent control (> 90%) of multitiller smooth crabgrass in tall fescue. These treatments were more effective than mesotrione alone and fenoxaprop at 195 g ai ha−1that averaged 66 and 81% control after 6 wk, respectively. Mesotrione alone at 280 g ha−1bleached smooth crabgrass 53% at 2 wk after initial treatment (WAIT), and was 14% greater than the 140 g ha−1treatment. Sequential treatments of the low mesotrione rate bleached smooth crabgrass 16 to 22% from 3 to 5 WAIT. Triclopyr tank mixtures reduced smooth crabgrass bleaching from mesotrione on all dates to < 5%. Tall fescue injury was not detected at any evaluation date. In laboratory experiments, smooth crabgrass reached peak foliar absorption of14C-mesotrione at 24 and 168 h after treatment (HAT; 23% and 15%) when mesotrione was applied with triclopyr at 1,120 and 0 g ha−1, respectively. Triclopyr reduced translocation of radioactivity 12% at 72 and 168 HAT, compared to14C-mesotrione alone. Enhanced foliar uptake of mesotrione from triclopyr tank mixtures might improve control of multitiller smooth crabgrass compared to mesotrione alone. Reduced foliar bleaching from triclopyr is associated with less translocation of mesotrione or derivatives in smooth crabgrass.

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Absorption and Translocation of SC-0051 in Corn and Soybean

Cited by 6 publications

References 8 publications

Delayed degradation in soil of foliar herbicides glyphosate and sulcotrione previously absorbed by plants: Consequences on herbicide fate and risk assessment

Delayed degradation in soil of foliar herbicides glyphosate and sulcotrione previously absorbed by plants: Consequences on herbicide fate and risk assessment

Absorption, Translocation, and Metabolism of Mesotrione in Grain Sorghum

Triclopyr Reduces Foliar Bleaching from Mesotrione and Enhances Efficacy for Smooth Crabgrass Control by Altering Uptake and Translocation

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