Dithiopyr is a technical active ingredient herbicide that provides preemergence and early postemergence control of crabgrass, and season-long control of crabgrass, goosegrass, foxtail, spurge and Poa annua.  It has found broad utility in varied product forms such as water-dilutable dry and liquid concentrates as well as ready-to-apply broadcast fertilizer granules.  In 2010, Dow AgroSciences initiated a project to develop a unique product concentrate concept for dithiopyr that would provide biological performance equal to or better than current commercial standards at competitive cost.  To achieve this, DAS embarked upon a program to evaluate various microcapsule forms of dithiopyr possessing very specific physical design features.  In particular, microcapsule features that were systematically varied included capasule wall thickness, particle size, and internal organic phase carrier type.  This study describes the preparation as well as the biological and physical property characterization of these candidate aqueous-based, capsule suspension concentrates.

Capsule suspension formulations of dithiopyr herbicide

248th National Meeting (2014)

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