Supplementary weed control using soil-applied herbicides in glyphosate-resistant maize in Texas

Grichar, W. James; Minton, Brad W.

doi:10.1016/j.cropro.2006.02.003

Cited by 6 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1) A single application (or sequential applications) of glyphosate-based herbicide alone, with no use of pre-emergence herbicides. However, note that field trials have shown that the use of glyphosate alone, applied post-emergence on one occasion at the recommended application rates can be inadequate to control all the weeds present throughout a full growing season (Gianessi et al, 2002;Gower et al, 2002Gower et al, , 2003Grichar and Minton, 2006;Parker et al, 2006). In a trial of glyphosate tolerant maize (event NK603) in the Czech Republic, Soukup et al (2008) only achieved acceptable herbicide efficacy for a single application of glyphosate when applied at dose rates above 1,440 g/ha active substance (ai).…”

Section: Glyphosate-based Herbicide Regimes In Genetically Modified Hmentioning

confidence: 99%

Scientific Opinion on application (EFSA‐GMO‐CZ‐2008‐54) for placing on the market of genetically modified insect resistant and herbicide tolerant maize MON 88017 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Andersson¹,

Arpaia²,

Bartsch³

et al. 2011

EFS2

View full text Add to dashboard Cite

This Scientific Opinion reports on an evaluation of a risk assessment for placing on the market of genetically modified maize MON 88017 for cultivation. The EFSA GMO Panel considers that maize MON 88017 is unlikely to have any adverse effect on the environment, except for the possible resistance evolution to the Cry3Bb1 protein in coleopteran target pests; resistance evolution may lead to altered pest control practices that may cause adverse environmental effects. The cultivation management of maize MON 88017 could result in environmental harm. The EFSA GMO Panel therefore recommends managing the use of glyphosate on maize MON 88017 within diversified cropping regimes that have similar or reduced environmental impacts compared with conventional maize cultivation. The EFSA GMO Panel recommends the deployment of insect resistance management strategies and case‐specific monitoring to address (1) the possible resistance evolution to the Cry3Bb1 protein in coleopteran target pests, (2) changes in botanical diversity within fields due to novel herbicide regimes, and (3) resistance evolution to glyphosate in weeds due to novel herbicide regimes. The EFSA GMO Panel agrees with the general surveillance plan of the applicant, but requests that the proposals made to strengthen general surveillance are implemented. Whilst the scope of this application only covers the cultivation of maize MON 88017, this Scientific Opinion also updates the previous EFSA GMO Panel safety evaluation of the food and feed uses, import and processing of maize MON 88017 and derived products. The EFSA GMO Panel concludes that the information available for maize MON 88017 addresses the scientific comments raised by Member States and that maize MON 88017, as described in this application, is as safe as its conventional counterpart and commercial maize varieties with respect to potential adverse effects on human and animal health. If subjected to appropriate management measures, the cultivation management of maize MON 88017 is unlikely to raise safety concerns for the environment.

show abstract

Section: Glyphosate-based Herbicide Regimes In Genetically Modified Hmentioning

confidence: 99%

Scientific Opinion on application (EFSA‐GMO‐CZ‐2008‐54) for placing on the market of genetically modified insect resistant and herbicide tolerant maize MON 88017 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Andersson¹,

Arpaia²,

Bartsch³

et al. 2011

EFS2

View full text Add to dashboard Cite

show abstract

“…However, note that field trials have shown that the use of glyphosate alone, applied post-emergence on one occasion at the recommended application rates can be inadequate to control all the weeds present throughout a full growing season (Gianessi et al, 2002;Gower et al, 2002Gower et al, , 2003Grichar and Minton, 2006;Parker et al, 2006) 55 . However, note that field trials have shown that the use of glyphosate alone, applied post-emergence on one occasion at the recommended application rates can be inadequate to control all the weeds present throughout a full growing season (Gianessi et al, 2002;Gower et al, 2002Gower et al, , 2003Grichar and Minton, 2006;Parker et al, 2006) 55 .…”

Section: Glyphosate-based Herbicide Regimes In Genetically Modified Hmentioning

confidence: 99%

“…(1) A single application (or sequential applications) of glyphosate-based herbicide alone, with no use of pre-emergence herbicides. However, note that field trials have shown that the use of glyphosate alone, applied post-emergence on one occasion at the recommended application rates can be inadequate to control all the weeds present throughout a full growing season (Gianessi et al, 2002;Gower et al, 2002Gower et al, , 2003Grichar and Minton, 2006;Parker et al, 2006) 55 . In a trial of glyphosate tolerant maize (event NK603) in the Czech Republic, Soukup et al (2008) only achieved acceptable herbicide efficacy for a single application of glyphosate when applied at dose rates above 1,440 g/ha active substance (ai).…”

Section: Glyphosate-based Herbicide Regimes In Genetically Modified Hmentioning

confidence: 99%

“…This strategy has been recommended by Gianessi (2008) and Soukup et al (2008) specifically for receiving environments in which early postemergence herbicides are predominantly used instead of pre-emergence herbicides. If applied sufficiently early, this strategy can eliminate early-season weed competition (Johnson et al, 2000;Thomas et al, 2007;Dill, 2005;Tharp et al, 2004;Grichar and Minton, 2006;Parker et al, 2006;Young, 2006;Zuver et al, 2006) and facilitate the control of weeds that are less susceptible to glyphosate (e.g., Norsworthy et al, 2001;Soukup et al, 2008). Based on field studies conducted at 35 sites throughout the north-central USA, Gower et al (2003) concluded that the optimum timing for a single glyphosate application to avoid maize yield loss is when weeds are less than 10 cm in height, no later than 23 days after maize planting, and when maize growth was not more advanced than the 4 th leaf stage.…”

Section: Glyphosate-based Herbicide Regimes In Genetically Modified Hmentioning

confidence: 99%

See 1 more Smart Citation

Scientific Opinion on application (EFSA-GMO-UK-2008-60) for placing on the market of genetically modified herbicide tolerant maize GA21 for food and feed uses, import, processing and cultivation under Regulation (EC) No 1829/2003 from Syngenta Seeds

2011

EFSA Journal

View full text Add to dashboard Cite

This Scientific Opinion reports on an evaluation of a risk assessment for placing on the market of genetically modified maize GA21 for food and feed uses, import, processing and cultivation. Maize GA21 was developed through particle bombardment and contains a single insertion locus consisting of modified maize epsps (mepsps) gene, conferring tolerance to glyphosate-based herbicides. Bioinformatic analyses and levels of the mEPSPS protein were considered sufficient. The comparative analysis of compositional, agronomic and phenotypic characteristics indicated that maize GA21 is not different from the conventional counterpart and its composition fell within the range observed among non-GM maize varieties, except for the presence of the mEPSPS protein in maize GA21. The safety assessment of maize GA21 identified no concerns regarding potential toxicity and allergenicity. A feeding study with broiler chickens confirmed that maize GA21 is as nutritious as its conventional counterpart. The EFSA GMO Panel considers that maize GA21 is unlikely to raise additional environmental safety concerns compared to conventional maize, but that its cultivation management could result in environmental harm under certain conditions. The EFSA GMO Panel therefore recommends managing the use of glyphosate on maize GA21 within diversified cropping regimes that have similar or reduced environmental impacts compared with conventional maize cultivation. The EFSA GMO Panel recommends the deployment of case-specific monitoring to address (1) changes in botanical diversity within fields due to novel herbicide regimes, and (2) resistance evolution to glyphosate in weeds due to novel herbicide regimes. The EFSA GMO Panel agrees with the general surveillance plan of the applicant, but requests that its proposals to strengthen general surveillance are implemented. The EFSA GMO Panel concludes that the information available for maize GA21 addresses the scientific comments raised by Member States and that maize GA21, as described in this application, is as safe as its conventional counterpart and commercial maize varieties with respect to potential adverse effects on human and animal health. If subjected to appropriate management measures, the cultivation management of maize GA21 is unlikely to raise safety concerns for the environment.

show abstract

“…In regions where early post-emergence herbicides are predominantly used, a single application of glyphosate in mixtures with other post-emergence herbicides with residual activity is considered effective for glyphosate tolerant maize (e.g., Gianessi, 2008;Soukup et al, 2008). This will eliminate early-season weed competition and will control the weeds that are not exposed to glyphosate (Johnson et al, 2000;Thomas et al, 2004;Dill, 2005;Tharp et al, 2004;Grichar and Minton, 2006;Parker et al, 2006;Young, 2006;Zuver et al, 2006). Based on field studies conducted at 35 sites throughout the north-central US, Gower et al (2003) concluded that the optimum timing for the glyphosate application to avoid maize yield loss is when weeds are less than 10 cm in height, no later than 23 days after maize planting, and when maize growth was not more advanced than the fourth leaf stage.…”

Section: Herbicide Regimes In Maize Cropping Systemsmentioning

confidence: 99%

Applications (references EFSA‐GMO‐NL‐2005‐22, EFSA‐GMO‐RX‐NK603) for the placing on the market of the genetically modified glyphosate tolerant maize NK603 for cultivation, food and feed uses, import and processing and for renewal of the authorisation of maize NK603 as existing products, both under Regulation (EC) No 1829/2003 from Monsanto

2009

EFS2

View full text Add to dashboard Cite

Supplementary weed control using soil-applied herbicides in glyphosate-resistant maize in Texas

Cited by 6 publications

References 13 publications

Scientific Opinion on application (EFSA‐GMO‐CZ‐2008‐54) for placing on the market of genetically modified insect resistant and herbicide tolerant maize MON 88017 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Scientific Opinion on application (EFSA‐GMO‐CZ‐2008‐54) for placing on the market of genetically modified insect resistant and herbicide tolerant maize MON 88017 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Scientific Opinion on application (EFSA-GMO-UK-2008-60) for placing on the market of genetically modified herbicide tolerant maize GA21 for food and feed uses, import, processing and cultivation under Regulation (EC) No 1829/2003 from Syngenta Seeds

Contact Info

Product

Resources

About