Spray drift can be defined as unwanted physical movement of spray droplets into non-target areas by air movements while application and after application (R. Frank, 1988). It can be divided into two main categories by type of occurrence.
Ilker H.Celen and Eray Onler (2011). Reducing Spray Drift, Pesticides in the Modern World – Pesticides Use and Management, Dr. Margarita Stoytcheva (Ed.), InTech, DOI: 10.5772/18288. Available from: InTechOpen: InTech – Open Science Open Minds