Atrazine Reduces Primisulfuron Transport to Meristems of Giant Foxtail (<i>Setaria faberi</i>) and Velvetleaf (<i>Abutilon theophrasti</i>)

Hart, Stephen E.; Penner, Donald

doi:10.1017/s0043174500057532

Cited by 16 publications

(19 citation statements)

References 27 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: 67%

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: 67%

Growth response of velvetleaf to three postemergence herbicides

Murphy

Lindquist

2002

Weed Science

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“…Fall panicum and giant foxtail control were reduced by 14 and 15 percentage points, respectively, when atrazine plus COC was added to foramsulfuron. Atrazine has been reported to antagonize other sulfonylurea herbicides (Dobbels and Kapusta 1993;Hart and Penner 1993). In fact, Hart and Penner (1993) reported that this antagonism was attributed to reduced translocation of the sulfonylurea herbicide in giant foxtail but there was no effect on absorption or metabolism.…”

Section: Resultsmentioning

confidence: 99%

“…Atrazine has been reported to antagonize other sulfonylurea herbicides (Dobbels and Kapusta 1993;Hart and Penner 1993). In fact, Hart and Penner (1993) reported that this antagonism was attributed to reduced translocation of the sulfonylurea herbicide in giant foxtail but there was no effect on absorption or metabolism. However, when MSO was added to the atrazine and foramsulfuron tank mixture, fall panicum control (98%) and giant foxtail control (86%) were not different from the foramsulfuron-alone treatment (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Incorporating Foramsulfuron into Annual Weed Control Systems for Corn¹

Bunting

Sprague²,

Riechers

2005

Weed Technology

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Field studies were conducted in 2000, 2001, and 2002 at Brownstown, DeKalb, Perry, and Urbana, IL, to evaluate weed control and corn tolerance from postemergence (POST) applications of foramsulfuron in sequential and total-POST herbicide programs. Foramsulfuron applied alone controlled giant foxtail, fall panicum, and redroot pigweed 88, 99, and 99%, respectively, 28 d after treatment (DAT), which was comparable with the standard treatment of nicosulfuron. However, control of common cocklebur, velvetleaf, and common lambsquarters was significantly higher with foramsulfuron compared with nicosulfuron. Sequential herbicide programs of atrazine, S-metolachlor, or isoxaflutole applied preemergence (PRE) followed by a POST application of foramsulfuron provided greater than 85% control of giant foxtail, fall panicum, common cocklebur, velvetleaf, common waterhemp, and redroot pigweed. Of the sequential herbicide treatments, atrazine applied PRE followed by a POST application of foramsulfuron provided the greatest Pennsylvania smartweed control. A PRE application of either atrazine or isoxaflutole was needed before a POST application of foramsulfuron to control common lambsquarters. POST tank mixtures of foramsulfuron with atrazine, dicamba, and dicamba plus diflufenzopyr improved control of Pennsylvania smartweed, common cocklebur, velvetleaf, common lambsquarters, and common waterhemp when compared with foramsulfuron applied alone. The tank mixture of foramsulfuron with mesotrione improved control of all species, except Pennsylvania smartweed, common lambsquarters, and common cocklebur. Foramsulfuron tank mixtures with carfentrazone did not improve control of any weed species to commercial acceptance. Adjuvant selection was important for POST tank mixtures. Control of giant foxtail and fall panicum was reduced when atrazine was tank mixed with foramsulfuron and crop oil concentrate (COC). However, when methylated seed oil (MSO) was added to the atrazine–foramsulfuron tank mixture instead of COC, giant foxtail and fall panicum control were similar to foramsulfuron applied alone.

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“…Phloem transport can be slow (Derr et al, 1985;Peregoy et al, 1990; Camacho et al, 1991). Instances where plants transclocate herbicides basipetally through phloem more rapidly may relate to observed patterns of efficacy (Hart and Penner, 1993). Response to fluazifop was dependent on translocation (Derr et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

¹⁴C‐Trinexapac‐Ethyl Absorption and Translocation in Kentucky Bluegrass

Fagerness

Penner

1998

Crop Science

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Trinexapac-ethyl is a foliar-applied growth regulator for turfgrass that can reduce mowing frequency, clipping production, and enhance turfgrass color. I"C_Trinexapac-ethyl was used to evaluate absorption and subsequent 14C-trinexapac-ethyl translocation in hydroponically grown 'Blacksburg' Kentucky bluegrass (Poa pratensis L.). The magnitude and rate of 14Ctrinexapac-ethyl absorption by various organs was as follows: plant base> leaf blade> roots. Over the time period of 0 to 24 hours, maximum absorption by the plant base was obtained in 8 hours and by the leaf blade in 24 hours. Absorption by the roots was negligible. Addition of an activator organosilicone adjuvant, Sylgard 309~, significantly enhanced 14C-trinexapac-ethyl absorption by the leafblade one hour after application but did not enhance absorption by the plant base. Of the 14C_ trinexapac-ethyl absorbed by the plant base, over 50% was translocated to the plant foliage after 24 hours. Of the 14C-trinexapac-ethyl absorbed by the leaf blade, one-third was translocated after 24 hours; the direction of movement was predominantly basipetal. Less than 5% of absorbed 14C-trinexapac-ethyl from either site was translocated to roots or to rhizomes with daughter plants, explaining the lack of inhibition of lateral turfgrass growth. Combined effects of enhanced leafblade absorption, basipetal translocation from the leaf blade, and acropetal translocation from the plant base of 14C-trinexapac-ethyl helped explain the positive impact of Sylgard 309~on efficacy and rainfastness of trinexapac-ethyl.

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Atrazine Reduces Primisulfuron Transport to Meristems of Giant Foxtail (Setaria faberi) and Velvetleaf (Abutilon theophrasti)

Cited by 16 publications

References 27 publications

Growth response of velvetleaf to three postemergence herbicides

Growth response of velvetleaf to three postemergence herbicides

Incorporating Foramsulfuron into Annual Weed Control Systems for Corn¹

¹⁴C‐Trinexapac‐Ethyl Absorption and Translocation in Kentucky Bluegrass

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Atrazine Reduces Primisulfuron Transport to Meristems of Giant Foxtail (Setaria faberi) and Velvetleaf (Abutilon theophrasti)

Cited by 16 publications

References 27 publications

Growth response of velvetleaf to three postemergence herbicides

Growth response of velvetleaf to three postemergence herbicides

Incorporating Foramsulfuron into Annual Weed Control Systems for Corn1

14C‐Trinexapac‐Ethyl Absorption and Translocation in Kentucky Bluegrass

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Product

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Incorporating Foramsulfuron into Annual Weed Control Systems for Corn¹

¹⁴C‐Trinexapac‐Ethyl Absorption and Translocation in Kentucky Bluegrass