Activity of Glyphosate on Johnsongrass

Parochetti, J. V.; Wilson, H. R.; Burt, G. W.

doi:10.1017/s0043174500062743

Cited by 30 publications

(35 citation statements)

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“…Regrowth occurred following summer harvest each season in most plots, and substantial regrowth occurred in 2009 and 2010 in the plots harvested in 2008 and 2009, respectively (data not shown). Similar observations of regrowth following control efforts were also made in experiments with johnsongrass (Parochetti et al 1975), wirestem muhly (Lingenfelter and Curran 2007), common reed (Ailstock et al 2001;Derr 2008a;Rensburg 1996), reed canarygrass (Annen et al 2005), and giant reed (Spencer et al 2008). These observations support the hypothesis that control of this perennial, rhizomatous grass will likely require efforts over more than one growing season.…”

Section: Field Experiments With Established M 3 Giganteus Standssupporting

confidence: 73%

“…rhizomes were effectively controlled (, 90%) with disking 10 times prior to planting agronomic crops (McWhorter and Hartwig 1965). Parochetti et al (1975) reported glyphosate at 1.1 to 3.4 kg ae ha 21 fb moldboard plowing 12 to 14 d later provided the best control of johnsongrass. Glenn et al (1986) applied fluazifop-p-butyl at 0.3 and 0.6 kg ai ha 21 , sethoxydim at 0.3 and 0.4 kg ai ha 21 , and glyphosate at 33% v/v in conventional tillage and no-till fields and found that all treatments provided good control of johnsongrass.…”

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confidence: 99%

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Miscanthus×giganteusResponse to Tillage and Glyphosate

Voigt¹,

Bollero²,

Hager³

2011

Weed technol.

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Miscanthus is a perennial, rhizomatous C4 grass grown in the European Union and studied in the United States as a bioenergy feedstock. U.S. farmers might be more willing to grow this perennial species if methods for its control were established. Experiments were conducted from 2007 to 2009 to evaluate methods to control miscanthus. As glyphosate rate increased from 0 to 3.6 kg ae ha−1in a greenhouse trial, miscanthus dry weight decreased. Aboveground biomass in the summer following treatments decreased 82, 77, and 95% with fall, spring, and fall followed by spring applications of glyphosate (1.7 kg ae ha−1), respectively, compared with nontreated plots in field experiments. Summer shoot count was reduced by 41% compared with the nontreated control with fall followed by spring glyphosate applications. A second field experiment demonstrated that spring tillage with one or two spring glyphosate applications (2.5 kg ae ha−1application−1) reduced aboveground dry biomass by 94 and 95%, respectively, and reduced miscanthus shoot number by 38 and 67%, respectively, in the same growing season. These experiments suggest that although glyphosate and tillage can reduce miscanthus biomass, complete control of a mature stand likely will require more than one growing season.

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Section: Field Experiments With Established M 3 Giganteus Standssupporting

confidence: 73%

mentioning

confidence: 99%

Miscanthus×giganteusResponse to Tillage and Glyphosate

Voigt¹,

Bollero²,

Hager³

2011

Weed technol.

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“…Dinitroaniline herbicides give acceptable control of seedling and rhizomatous S. halepense; however, a 2-year programme involving incorporation and high rates of herbicide is required (McWhorter, 1977). Foliar applications of glyphosate to 5. halepense at or near the reproductive stage of growth has provided excel-lent control of 5. halepense (Parochetti, Wilson & Burt, 1975;Banks & Santelmann, 1977;Jeffery, English &Connell, 1981), but glyphosate must be directed at the S. halepense with special application techniques to avoid injury if a crop is present.…”

Section: Introductionmentioning

confidence: 99%

Sorghum halepense (L.) Pers. control with foliar‐applied herbicides in conventional and no‐tillage soyabeans*

et al. 1986

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Summary: Résumé: Zusammenfassung Separate field experiments were conducted to evaluate Sorghum halepense (L.) Pers. (johnson‐grass) control with foliar‐applied herbicides in soyabeans (Glycine max (L.) Merr. cv. Williams) grown in tilled (mould board plough) or no‐tillage fields. Fluazifop‐butyl, sethoxydim, CGA‐82725 and mefluidide were applied post‐emergence to 45‐cm high S. halepense and glyphosate was applied with a wick bar to 90‐cm high S. halepense in the conventional and no‐tillage studies. HOE‐00581 {ethyl 2‐[4‐[(6‐chloro‐2‐benzoazolyl)oxyl]‐phenoxy]propanoate} was applied to 45‐cm high S. halepense only in the no‐tillage studies. Fluazifop‐butyl, sethoxydim, CGA‐82725, HOE‐00581 (no‐tillage only) and glyphosate provided good control of S. halepense in conventional and no‐tillage soyabeans and generally increased soyabean yields compared to weedy controls, when low precipitation was not limiting yields. Mefluidide at 0.3 kg ai ha−1 provided the least S. halepense control in the conventional and no‐tillage studies. The studies were not designed to compare S. halepense control in the two tillage systems; however, these data show that tillage to disrupt S. halepense rhizomes was not required to obtain good control of S. halepense with foliar applications of fluazifop‐butyl, sethoxydim, CGA‐82725, HOE‐00581 and glyphosate. La lutte contre Sorghum halepense (L.) Pers. utilisant des herbicides foliaires dans le soja en culture classique et en non‐culture Plusieurs essais ont été installés sur le terrain dans le but d'évaluer des herbicides foliaires pour la destruction de Sorghum halepense (L.) Pers. dans le soja (Glycine max (L.) Merr. var. Williams) cultivé en terre labourée et en non‐culture. Le fluazifop‐butyle, le séthoxydime, le CGA‐82725 et le méfluidide ont été appliqués en postlevée sur S. halepense haut de 45 cm et le glyphosate a été appliqué sur S. halepense haut de 90 cm, utilisant un frotteur, dans les deux sytèmes de culture. HOE‐00581 (éthyle 2‐[4‐[(6‐chloro‐2‐benzoazolyl)oxyl]phénoxy]propanoate) a été appliqué sur S. halepense haut de 45 cm uniquement dans les systèmes de·non‐culture. Le fluazifop‐butyle, le séthoxydime, le CGA‐82725, le HOE‐00581 et le glyphosate ont bien maitriséS. halepense dans les deux systèmes de culture du soja, tout en augmentant les rendements de soja par rapport au témoin enherbé, là où une précipitation insuffisante n'est pas intervenue. Le méfluidide à 0,3 kg ai ha−1 a donné la plus faible destruction de S. halepense en culture classique et en non‐culture. Une comparaison de la destruction de S. halepense dans les deux systèmes de culture n'était pas le but principal de ces travaux; cependant ces données font voir qu'un labourage pour briser les rhizomes de S. halepense n'est pas de rigueur pour obtenir une bonne maîtrise de l'adventice par des applications foliaires de fluazifop‐butyle, séthoxydime, CGA‐82725, HOE‐00581 et glyphosate. Sorghum halepense (L.) Pers. Bekämpfung mit blattwirksamen Herbiziden in Soyakulturen mit und ohne Bodenbearbeitung Es wurden sepa...

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“…Another efficient way to kill the two grasses was with the aid of glyphosate, which was very efficient against both Bermuda grass and Johnsongrass. This is in accordance with reports in literature (Arenstein, 1973;Parochetti, Wilson & Burt, 1975). When mechanical cultivation between the rows was satisfactory, as in Aviel, perennial grasses along the rows disappeared after 3 years of treatment with the most potential herbicides, and treatments were discontinued.…”

Section: Discussionmentioning

confidence: 99%

The efficacy of several herbicides in the vineyard and their toxicity to grapevines

1979

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Application of several herbicides and a combination of herbicides in two vineyards resulted in a perfect control of Bermuda grass by glyphosate and mixed or alternate applications of MSMA and dalapon. Johnson grass was eliminated by MSM A with and without the addition of dalapon. Dalapon combined with MSMA reduced the yield of the grapevines and their growth, as measured by the weight of pruning. Yields were also significantly reduced by aminotriazole and in one vineyard also by simazine. Reduced vegetative growth was caused by MSMA and glyphosphate.MSMA and glyphosphate reduced the chlorophyll content of the grape leaves and the reducing sugar content of the canes in winter. Amino triazole reduced the reducing sugar content of both leaves and canes and the nitrogen content of the canes. In one vineyard simazine reduced the chlorophyll content of the leaves and increased the nitrogen content of the canes. MSMA alone and in combination with dalapon increased the arsenic content of leaves, canes and fruits of grapevines. Arsenic levels were the highest in the canes, but still did not exceed 0-6 ppm. Levels were lowest in fruits and did not exceed 0-1 ppm. Dalapon reduced the chlorophyll content of leaves in June and increased it in July. It also affected the reducing sugar content of leaves and canes without affecting yields or growth. Efficacite de quelques herhicUles en vtgnoble et leur toxicite pour la vigneResume L' application de plusieurs herbicides et d'une association d'herbicides dans deux vignobles a permis une elimination complete du chiendent (Cynodon dactylon (L.) Pers.) avec des traitements au glyphosate et des applications simultanees ou alternees de MSMA et de dalapon. Le sorgho d'Alep (Sorgum halepense (L.) Brot.) a ete elimine par le MSMA avec ou sans addition de dalapon. Le dalapon associe au MSMA a reduit le rendement et la croissance de la vigne, comme l'a montre la

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Activity of Glyphosate on Johnsongrass

Cited by 30 publications

References 0 publications

Miscanthus×giganteusResponse to Tillage and Glyphosate

Miscanthus×giganteusResponse to Tillage and Glyphosate

Sorghum halepense (L.) Pers. control with foliar‐applied herbicides in conventional and no‐tillage soyabeans*

The efficacy of several herbicides in the vineyard and their toxicity to grapevines

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