Glyphosate

Glyphosate is the most widely used herbicide in the world. It is a broad-spectrum herbicide, i.e. it kills any plant unless it has been genetically modified in such a way so as to be resistent. Glyphosate is more commonly known under the brand name "Roundup" manufactured by the American agrochemical company Monsanto (now owned by Bayer).

Glyphosate was deemed safe for a long time. Recently, evidence emerged that glyphosate may be harmful for humans, animals, and the environment. In 2015, the International Agency for Research on Cancer (IARC) published a report according to which glyphosate is "probably carcinogenic to humans". In May 2016, however, the Joint Meeting on Pesticide Residues (JMPR) – an expert body administered jointly by the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO) – concluded that glyphosate is "not carcinogenic". This assessment is shared by the German Federal Institute for Risk Assessment (Bundesinstitut für Risikobewertung, BfR), the European Food Safety Authority (EFSA), and the United States Environmental Protection Agency (USEPA) in the US. The different conclusions result from different assessment standards. IARC examines whether a certain substance can cause cancer in principle, whereas EFSA and FAO/WHO investigates whether the de facto use of glyphosate causes cancer.

Website of the IARC Online Version

Website of the BfR Online Version (German)

Website of EFSA Online Version

Website of the JMPR Online Version

Website of the EU on glyphosate Online Version

The approval of glyphosate from 2017 to 2022 was initially extended by one year until 2023 to give the European Food Safety Authority (EFSA) time to complete its risk assessment and peer review. The Committee for Risk Assessment (RAC) of the European Chemicals Agency (ECHA) should also complete its review by then. EFSA and RAC unanimously concluded that there is currently no scientific or legal justification for a ban on glyphosate. However, EFSA identified data gaps in several areas, such as in relation to dietary risks to consumers and in the assessment of risks to aquatic plants and biodiversity. The RAC concluded that the existing classification of glyphosate (causing serious eye damage and toxic to aquatic life with long-lasting effects) should be retained. Furthermore, the available scientific evidence did not indicate that glyphosate would meet the criteria for hazard classification as specific target organ toxicity, or as a carcinogenic, mutagenic or reprotoxic substance. The EFSA accepted this classification.

EFSA (2023): Press release: Glyphosate: no critical areas of concern; data gaps identified. Online Version

ECHA (2022): Press release: Glyphosate: no change proposed to hazard classification. Online Version

Accordingly, the approval of glyphosate was extended by the EU Commission until December 15, 2033. The Commission expects that under the conditions of approval and by following good agricultural practices, glyphosate will have no harmful effects on human health or unacceptable effects on the environment. However, the EU Commission can review the approval at any time if scientific findings indicate that the EU approval conditions are no longer met.

Commission Implementing Regulation (EU) 2023/2660 of 28 November 2023 renewing the approval of the active substance glyphosate. Online Version

In Germany there is no consensus among political parties regarding the use of glyphosate. However, a permanent ban on glyphosate is controversial. Farmers would have to combine different pesticides to achieve a similar effect. A non-chemical alternative would be to remove weeds mechanically, but this would lead to more labor and less yields. Researchers from the University of Gießen estimate that costs may increase by 5–11 % and yields may decrease by 5–10 %.

Dickeduisberg, M./ Steinmann, H.-H./ Theuvsen, L. (2012): Erhebungen zum Einsatz von Glyphosat im deutschen Ackerbau. Tagungsband 25. Deutsche Arbeitsbesprechung über Fragen der Unkrautbiologie und -bekämpfung. 25. März 2012, Braunschweig, Julius-Kühn-Archiv 434, 459-462. DOI: 10.5073/jka.2012.434.056 Online Version (German)

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