Which formulation type is likely to clog nozzles during application?

Emulsifiable concentrates are formulations that consist of a mixture of active ingredients and solvents, which create a milky emulsion when mixed with water. The nature of this formulation can lead to the formation of small droplets or particles that may not fully dissolve or disperse during application. Consequently, these particles can accumulate and potentially clog spray nozzles, particularly if the nozzle sizes are not appropriately matched to the formulation or if the mixture is not agitated well enough before and during application.

In contrast, granules are solid formulations that generally do not pass through nozzles and are applied using different methods. Flowables are designed to remain in suspension and are typically less prone to clogging as they maintain a uniform consistency. Water-soluble concentrates dissolve completely in water, preventing the risk of clogging due to undissolved particles. Therefore, emulsifiable concentrates stand out as the formulation type most likely to cause nozzle clogging during pesticide application.