Rapeseed oil ethoxylate surfactants and their effects on retention, penetration, rainfastness and biological efficacy of selected agrochemicals (English shop)

This study evaluates the effectiveness of a homologous series of rapeseed oil derivatives as formulation components or tank-mix adjuvants for selected foliar-applied pesticides and leaf fertilizers. The research systematically investigates the impact of these surfactants on the physico-chemical properties of spray solutions, droplet retention on leaf surfaces, cuticular sorption and penetration of active ingredients, and the rainfastness of spray deposits. Representative model compounds included the plant growth regulator NAA, the herbicidal compound glyphosate, the fungicidal active ingredients prochloraz and tolylfluanid, and the nutrients calcium chloride and magnesium salts. Results demonstrate that rapeseed oil ethoxylates can significantly enhance the performance and physical characteristics of agricultural sprays without inducing phytotoxicity in non-target plants. Owing to their favorable toxicological and ecotoxicological profiles, these biodegradable surfactants offer a promising and ecologically sound alternative to conventional petroleum-derived adjuvants in crop production.