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Reduce herbicide rate
Where costly herbicides are involved, or residues are an issue, formulation can provide an easy environmental or economic solution. One example is the ability to reduce the amount of glyphosate required to achieve plant kill. The results (see graph) show that glyphosate can be reduced to a third or less by the addition of a surfactant that can give excellent retention, wetting and in this case, rainfastness (due to stomatal infiltration). Similar outcomes have been achieved with other weed species and herbicides.
Balneaves, JM. 1992. Organosilicone surfactants help rainfastness of glyphosate on gorse and broom. Proc. New Zealand Plant Protection Conference. ed. AJ Popay. August 1992. 45: 247-250.