ABSTRACT
The discovery and development of effective agrochemicals that can be used with maximum efficiency and minimum risk to the user requires the optimization of their transfer to the target during application. In this way the agrochemical can be used in an effective way, thus minimizing any waste during application. The application of an agrochemical as a spray involves a number of interfaces, where the interaction with the formulation plays a vital role. The effect of the various surfactants and polymers should be studied in spray application during the formulation of the agrochemical. Many agrochemical applications involve high volume sprays, whereby with continuous spraying the volume of the drops continue to grow in size by impaction of more spray droplets on them and by coalescence with neighboring drops on the surface. In addition, thick deposits that are produced from droplets with limited spreading can increase the tenacity of the agrochemical and ensure the longer term protection by the agrochemical.
