Abo exklusiv

Wissenschaftliche Zeitschriften

Mehr über das wissenschaftliche Verlagsprogramm erfahren Sie im Zeitschriften-Überblick im » Ulmer-Zeitschriftenkiosk

A new herbicide adjuvant based on a non-super spreading trisiloxane surfactant

Summary
Ever since the discovery that silicone surfactants improve the efficacy of herbicides, their efficiency was attributed to the phenomena of super spreading. We developed now a silicone surfactant (BREAK-THRU S233) that reduces the surface tension of water dramatically like other products of this surfactant class, but does not provide super spreading. We could show that in field trials with herbicides, there was no difference in improvement of efficacy between the super spreading and non-super spreading surfactants. Both products enhance the rainfastness of a sulfonylurea to the same extent. With glyphosate formulations, the non-super spreader was even slightly better. When the non-super spreader was mixed with an organic additive, the combination was as good as the non-super spreader alone but showed higher selectivity with sugar beet herbicides. Advantages of BREAK-THRU S233 as compared to super spreaders are the reduced risk of 'run-off', the low dose per ha (100 ml/ha) and the robust efficacy with herbicides.

german version

Keywords/Stichworte:Adjuvants; wetter; spreader; rainfastness; surface tension; herbicides

Downloads: (Hinweis zu PDF-Dokumenten)

Download (Full Article in english) (PDF)

Autor:E. SIEVERDING, I. FLEUTE-SCHLACHTER, Degussa, Goldschmidt Industrial Specialties, Goldschmidtstr. 100, 45127 Essen/Germany, e-mail: ewald.sieverding@degussa.com & ingo.fleute-schlachter@degussa.com;
G. D. HUMBLE, Degussa, Goldschmidt Chemical Corporation, 710 6th Street, Hopewell, Virginia/USA, e-mail: dave.humble@degussa.com

Drucken Weiterleiten