Rosate Green Technical Update

Technical Update

Rosate Green is one of a new generation of glyphosate formulations exhibiting high levels of safety to humans and animals and to the environment.

Rosate Green has authorization for use in various situations where access by members of the public, other personnel and animals may occur either during or shortly after application.This technical bulletin provides further advisory information and guidance on the use of Rosate Green in such situations.

The active substance in Rosate Green is glyphosate, which is one of the most widely used herbicides in the world due to its favourable environmental characteristics and low toxicity to humans and animals. Glyphosate controls weeds by absorption through the green foliage and blocking the synthesis of an enzyme which occurs in most plants at varying levels, but not present in humans or other wildlife. Once blocked, the enzyme stops the production of certain plant proteins essential for plant growth and development.

Glyphosate active ingredient is not classified by the EU authorities or the World Health Organisation on toxicity by either ingestion by mouth or through contact with skin. The surfactant in Rosate Green has been shown in tests not to increase the level of hazard classification of the product compared to that of the active ingredient. Rosate Green does not carry any human health hazard warning symbols but nevertheless should be handled with care like any other Plant Protection Product and by persons suitably qualified under the relevant legislations. In common with many other general chemical products (for example even soap or lemon juice), Rosate Green undiluted product may cause slight transient eye irritation. When diluted for spray application as recommended, it is unlikely that the low concentration in the spray solution would result in any significant eye irritation.

In the situation where spray has been transferred to skin or animal fur or feet, it is highly unlikely any adverse effects would result. It is advisable not to allow the transfer via contact from the treated area as damage to susceptible plants or grass (e.g. amenity grassland) can occur. In the situation that dogs, cats or other animals absorb spray solution from brushing against treated foliage or eating treated foliage, no adverse effects are expected. The small amounts of glyphosate entering the body would largely pass through un-metabolized, in fact the label carries a recommendation that allows treated grassland (after a short interval) to be fed to grazing animals.

The undiluted product is not classified as a skin or eye irritant and the diluted product is always over 95% water content. It is highly unlikely that children or animals entering the treated area before the spray has dried would experience any skin or eye irritation. In practice, the spray will usually dry on the leaf within a few hours and children and animals are unlikely to be present. Once the spray has dried on the leaf, transfer of residues does not occur.