Abstract: Many pesticide, insecticide or fertilizer-type formulations prove beneficial when applied to a seed prior to planting. However, when mixing multiple formulations simultaneously in a custom blend, problems arise regarding the viscosity and stability of the blend that result in inadequate handling, coverage and stability. Further, dusting off of certain pesticides must be minimized. The present invention comprises the addition of specific surfactants to the custom blend formulation to manage viscosity, thus improving pumpability, seed coverage, and stability of custom blends while reducing seed dust off.