Regulatory authorities as well as many other public and private entities have conducted numerous studies for a variety of purposes related to spray drift. These studies may focus on or characterize spray drift deposition, spray drift potential from different application equipment or spray adjuvants. Additionally, there are test protocols (methods) for measuring spray drift potential. The following links are to such studies posted by regulatory authorities on their websites.
Belgium I Germany I Netherlands I UK
Belgian research consortium:
This Belgian research consortium has many years of experience with spray drift measurements (field, wind tunnel & PDPA laser) and drift models for field crop sprayers. The effect of spray application technique, crop characteristics, meteorological conditions, spray liquid properties and border structures on spray drift were studied using an integrated approach. Research results are disseminated through numerous scientific publications and presentations.
Federal Office of Consumer Protection and Food Safety (BVL)
Information (in German) on JKI website
Spray drift research in the Netherlands is done by Wageningen University and Research Centre. The Field Technology Group (former IMAG) of the Business Unit Agrosystems Research of Plant Research International (WUR-PRI) has the knowledge and capacity to do both field and laboratory research on spray drift. They have done numerous measurements which has led to the certification of spray drift reducing nozzles and application techniques which are listed on the website.
Nozzle classification in drift reduction classes 50%, 75%, 90%, 95% reduction compared to a reference nozzle is based on spray quality measurements according to the above protocol with additional spray drift calculations of these measured spectra as input with the IDEFICS spray drift model. Classification is done relative to a standard situation.
Health and Safety Executive, Chemicals Regulation Directorate (Pesticides)
Department for Environment, Food and Rural Affairs (DEFRA)
Assessing the validity of current approaches for calculating off-crop exposure to pesticides;
Aquatic buffer zones in the UK - the potential to extend the existing LERAP scheme for boom sprayers;
Additional field spray drift data for the buffer zone review;
Field spray drift studies to mature winter cereal crops with modern application practices to inform policy on setting of buffer zones in the UK;
Low drift rating of broadcast air-assisted sprayers for UK horticulture: a review to establish LERAP reduced drift status;
Identifying methods of controlling spray drift when using increased boom heights;
Additional field spray drift studies with modern application practices to inform policy on setting of buffer zones in the UK.