Widespread use of glyphosate tolerant soybean and weed community richness in Argentina

Vitta, J. I.; Tuesca, Daniel; Puricelli, Eduardo

doi:10.1016/j.agee.2003.10.016

Cited by 44 publications

(34 citation statements)

References 2 publications

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“…With the exception of the monitoring study conducted by Badea et al (2006), the EFSA GMO Panel is not aware of any scientific studies having considered the impact of GMHT soybean systems and their associated herbicide regimes on farmland biodiversity under European environmental conditions. Several studies, however, have assessed the impact of glyphosate-based herbicide regimes used in GMHT soybean in Argentina (Tuesca et al, 2001;Vitta et al, 2004;De la Fuente et al, 2006;Scursoni et al, 2007;Scursoni and Satorre, 2010), Canada (Simard et al, 2011), Japan (Imura et al, 2010) and the USA (Buckelew et al 2000;Bitzer et al, 2002;Jasinski et al, 2003;McPherson et al, 2003;Jackson and Pitre, 2004b,c;Scursoni et al, 2006). In the EU, research projects such as: the project on Botanical and Rotational Implications of Genetically modified Herbicide Tolerance in winter oilseed rape and sugar beet (BRIGHT) (Sweet et al, 2004;Lutman et al, 2008); the Farm Scale Evaluations (FSEs) (Firbank et al, 2003a,b) in the United Kingdom; and the study of the National Environmental Research Institute (NERI) in Denmark (e.g., Strandberg and Pedersen, 2002) have considered the impact of more general GMHT cropping systems and their associated herbicide regimes on farmland biodiversity.…”

Section: Impact On Farmland Biodiversitymentioning

confidence: 99%

Scientific Opinion on an application (EFSA‐GMO‐NL‐2005‐24) for the placing on the market of the herbicide tolerant genetically modified soybean 40‐3‐2 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

2012

EFS2

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This Scientific Opinion reports on an evaluation of a risk assessment for the placing on the market for cultivation of genetically modified soybean 40‐3‐2, and updates the previous EFSA GMO Panel Scientific Opinion on the renewal applications for the continued marketing of soybean 40‐3‐2. The EFSA GMO Panel considered that soybean 40‐3‐2 is unlikely to raise additional environmental safety concerns compared with conventional soybean, but that the management of its cultivation could result in environmental harm under certain conditions. The Panel therefore recommended managing the use of glyphosate on soybean 40‐3‐2 in ways that result in similar or reduced environmental impacts compared with conventional soybean cultivation. There is no evidence of adverse effects on non‐target organisms (including pollinators) due to the expression of the CP4 EPSPS protein, and there are no indications of the occurrence of adverse effects on non‐target predators, herbivores and decomposers due to potential unintended changes in soybean 40‐3‐2. Owing to the lack of event‐specific data on plant‐pollinator interactions, scientific uncertainty on the occurrence of adverse effects on pollinators, due to potential unintended changes in soybean 40‐3‐2, remains, and strategies for resolving this uncertainty are discussed. The Panel recommended the deployment of case‐specific monitoring to address: (1) changes in weed community diversity; and (2) the evolution of resistance to glyphosate in weeds due to changes in herbicide and cutivation regimes. The Panel agreed with the general surveillance plan of the applicant, but requested that the Panel's proposals to strengthen general surveillance are implemented. The Panel concluded that the information available for soybean 40‐3‐2 addresses the scientific comments raised by Member States and that soybean 40‐3‐2, as described in this application, is as safe as its conventional counterpart and commercial non‐GM soybean varieties with respect to potential adverse effects on human and animal health. If subjected to appropriate management measures, the cultivation of soybean 40‐3‐2 is unlikely to have environmental effects any more adverse than those associated with conventional soybean cultivation.

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Section: Impact On Farmland Biodiversitymentioning

confidence: 99%

Scientific Opinion on an application (EFSA‐GMO‐NL‐2005‐24) for the placing on the market of the herbicide tolerant genetically modified soybean 40‐3‐2 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

2012

EFS2

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“…, 2000). In recent years the species has declined with increasing use of transgenic cultivars of soya bean tolerant to glyphosate (Vitta et al. , 2004).…”

Section: Introductionmentioning

confidence: 99%

Germination characteristics of Amaranthus quitensis as affected by seed production date and duration of burial

Faccini¹,

Vitta

2005

Weed Research

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Summary Thermal requirements for the germination of Amaranthus quitensis, a common annual weed in Argentina, were studied. In addition, temporal changes in dormancy from seeds produced at different times during the growing season were examined. For this second objective, thermal and light requirements for germination were tested in seeds buried at different depths, with or without crop residues. Base and optimum temperatures for germination rates were 12.8°C and 37°C respectively. At dispersal time, maximum percentage germination was 60–70% and this was generally recorded at 35°C/25°C in a 14‐h photoperiod. Seed germination tended to increase in later seed collection dates. Seeds of A. quitensis showed seasonal changes in germinability in the soil. In winter, germination of retrieved seeds increased to over 90% until summer, after which there was a decrease until the following winter when germination was close to 40%. There were no differences in germinability between burial depths and crop residue levels. Germination requirements for alternating temperatures and light tended to disappear after burial. Initial viability was 99% and declined slightly during burial. Soil temperature seems to play a crucial role not only by regulating seasonal changes in dormancy, but also by defining the percentage and the germination rate in non‐dormant seeds.

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“…In this study, absolute weed species diversity values in the glyphosate treatments were different among the experiments, and no clear trend between the tillage systems could be gleaned from these data. In a wheat-GR soybean rotation, weed species richness increased during 5 yr in CT and NT in a study in Argentina (Vitta et al 2004). In the 3 yr of this study, no clear temporal trends were observed, which is why the analysis was on the combined 3 yr.…”

Section: Resultsmentioning

confidence: 96%

Conventional vs. Glyphosate-Resistant Cropping Systems in Ontario: Weed Control, Diversity, and Yield

et al. 2009

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Glyphosate-resistant (GR) crops have been adopted rapidly since their commercial introduction, and with the increase in commercially available crops resistant to glyphosate, continuous use of the same herbicide mode of action is now possible in some crop rotations. A 6-yr study was initiated to investigate the effects of conventional herbicides compared with continuous use of glyphosate in GR or Roundup Ready corn and GR soybean in a corn–soybean and a corn–soybean–winter wheat rotation. Individual experiments were fully phased and established at three locations under conventional tillage (CT) and at two locations under no-tillage (NT). Results indicated that midseason weed ground cover was lower when weeds were controlled with glyphosate; however, in most cases, this did not result in improved corn or soybean yields. Within locations, species richness, which strongly influenced other diversity indicators, was most affected by the herbicide treatments. Including winter wheat in the crop rotation had little effect on corn and soybean weed ground cover, density, and community structure and only affected soybean yield. Moreover, no effects of herbicide system used in previous corn and soybean were observed in winter wheat, with the exception of species diversity in NT, where species diversity tended to be greater when weeds in previous corn and soybean were treated with conventional herbicides. After 6 yr, the effects of continuous use of GR crops in rotation were similar to those reported in previous studies; however, continued monitoring and longer-term investigations of these systems are necessary to detect the early stages of development of herbicide-resistant biotypes.

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Widespread use of glyphosate tolerant soybean and weed community richness in Argentina

Cited by 44 publications

References 2 publications

Scientific Opinion on an application (EFSA‐GMO‐NL‐2005‐24) for the placing on the market of the herbicide tolerant genetically modified soybean 40‐3‐2 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Scientific Opinion on an application (EFSA‐GMO‐NL‐2005‐24) for the placing on the market of the herbicide tolerant genetically modified soybean 40‐3‐2 for cultivation under Regulation (EC) No 1829/2003 from Monsanto

Germination characteristics of Amaranthus quitensis as affected by seed production date and duration of burial

Conventional vs. Glyphosate-Resistant Cropping Systems in Ontario: Weed Control, Diversity, and Yield

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