Uses and benefits of glyphosate in German arable farming

Steinmann, Horst-Henning; Dickeduisberg, Michael; Theuvsen, Ludwig

doi:10.1016/j.cropro.2012.06.015

Cited by 75 publications

(71 citation statements)

References 14 publications

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“…As a result, applications can be early in the year with pre-sowing (i.e. no-tillage farming), with pre-harvest crop desiccation (also known as siccation or controlled ripening) in summer shortly before harvesting and later in the year on stubble fields to prepare them for the sowing of winter crops [11].…”

Section: Effects Of Glyphosate-based Herbicides On Amphibiansmentioning

confidence: 99%

Hypothesizing if responses to climate change affect herbicide exposure risk for amphibians

et al. 2014

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Pesticide use is well known to be detrimental for maintaining biodiversity in the agricultural landscape. Amphibians are especially affected by these agrochemicals. In particular, these animals' high sensitivity was demonstrated for glyphosate-based herbicides which are dominating the world market today. Pesticide impacts are influenced by several co-stressors, and we for the first time link the exposure risk of amphibians to these commonly used pesticides to observed recent effects from ongoing climate change. In a simple verbal model, based on present-day data from Germany, we show that amphibian populations which have undergone phenological shift towards earlier reproduction potentially suffer less from applications of glyphosate-based herbicides compared to those which (yet) show no such reproductive shift. Although, apparently observed recent climate change effects lower the exposure risk, we advocate that amphibians are not necessarily safer now, mainly because farmers most likely will adapt their cultivation practices in the future if climate change becomes more obvious. Rather, we conclude that combining pesticide applications, climate change and phenological responses need an increased consideration in amphibian conservation. The results from our verbal model should be seen as a hypothesis that needs to be tested with specific field studies and (based on these data which are widely lacking today) more complex modelling of future exposure risk of pesticides to amphibians.

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Section: Effects Of Glyphosate-based Herbicides On Amphibiansmentioning

confidence: 99%

Hypothesizing if responses to climate change affect herbicide exposure risk for amphibians

et al. 2014

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“…Another wildly optimistic survey of farmers in Germany concludes that "glyphosate offers large benefits to farmers" [4]. A dispassionate reader of the facts presented in the article is unlikely to come to that conclusion, even without taking into account other known facts (such as the development of resistance) that have been omitted.…”

mentioning

confidence: 95%

“…Continuing with our attempt to identify the advantages of glyphosate, we may again look at the papers, already mentioned, of Powles [3] and Steinmann et al [4] The former concludes that "Glyphosate is essential for present and future world food production, and action to secure its sustainability for future generations is a global imperative." This paper was published one year after the symposium "Mineral Nutrition and Disease Problems in Modern Agriculture: Threats to Sustainability?…”

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confidence: 99%

A contemporary view of glyphosate

Ramsden¹

2015

JBPC

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“…This corresponds to Nichterlein et al (2013), who observed that the efficacy in the Roundup Ready® system is less sensitive to timing, soil conditions and weed species composition than in conventional weed control systems. However, if the first treatment with glyphosate is made later than four to six true leaf stage of weeds, sugar beet yield can be reduced (Dewar et al 2000, Märländer 2005, Wilson and Sbatella 2011, Steinmann et al 2012.…”

mentioning

confidence: 99%

Evaluation of two chemical weed control systems in sugar beet in Germany and the Russian Federation

Bezhin¹,

Santel²,

Gerhards³

2015

Plant Soil Environ.

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Roundup Ready® sugar beets are widely grown in the USA since their market introduction in 2005. The system has proven to be cost-efficient and reliable. However, the negative social image among consumers and politicians has prohibited the adoption of this technology in Europe. Seven field experiments were conducted over three years in Germany and the Russian Federation to compare weed control efficacy and sugar beet yields of post-emergent glyphosate applications with conventional selective herbicides. Although weed infestations at the Russian sites were higher than in Germany, weed control efficacies were similar at both locations ranging between 78% and 100%. Glyphosate applications resulted in significantly higher weed control efficacies than the conventional herbicides in four out of 7 experiments. In five experiments, a single glyphosate application gave equal weed control efficacy as two and three glyphosate applications. White sugar yield was always higher in the weed control treatments than in the untreated plots. There was no yield difference between treatments based on glyphosate and conventional herbicide applications in 6 out of 7 experiments. The results demonstrate a slight benefit of the glyphosate-based weed control program compared to the conventional herbicide system in terms of weed control efficacy.Keywords: weed management; competition; Beta vulgaris; pesticide; yield loss 489Plant Soil Environ. Vol. 61, 2015, No. 11: 489-495 doi: 10.17221/482/2015-PSE dosage of the herbicide usually has to be increased to achieve suitable biological efficacy of the weeds. However, the increase of the herbicide application rate may cause stress to the crop and potentially express symptoms of phytotoxicity. The application is typically conducted as a tank mixture of several herbicidal substances adjusted to the weed species present (Petersen 2008). Weed shift caused by conventional weed control with selective herbicides has favoured several difficult-to-control-weeds, such as Fallopia convolvulus L., Mercurialis annua L., Solanum nigrum L. and Aethusa cynapium L. (Vasel et al. 2012). These weeds became less susceptible to herbicides or escaped weed control by late emergence.Roundup Ready® system based on glyphosatetolerant sugar beet cultivars and use of glyphosate containing herbicide is an alternative technology for weed management in sugar beet (Nichterlein et al. 2013). In the USA, this technology was very rapidly adopted by farmers and in 2009, 85% of the sugar beets produced in the USA were Roundup Ready® cultivars (Nichterlein et al. 2013). This technology combines high weed control efficacy with high selectivity and is supposed not to require herbicide application at early growth stages of the weeds. Usually, two to three glyphosate application is performed starting at 4-leaf stage of sugar beets (Dewar et al. 2003, Brookes and Barfoot 2013, Muoni et al. 2013, May et al. 2014). This claim is contradicting the view of weed freeness necessary for yield protection reported by other authors (K...

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Uses and benefits of glyphosate in German arable farming

Cited by 75 publications

References 14 publications

Hypothesizing if responses to climate change affect herbicide exposure risk for amphibians

Hypothesizing if responses to climate change affect herbicide exposure risk for amphibians

A contemporary view of glyphosate

Evaluation of two chemical weed control systems in sugar beet in Germany and the Russian Federation

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