PP 1/239 (3) Dose expression for plant protection products

Specific scope This Standard defines how the dose of plant protection products should be expressed, and describes different dose expression terms and their interconversion. It also describes the parameters, specific to the crop, site and type of application, which should be recorded so that the applied dose can be determined in a standard way whatever the crop or product, or the equipment used for treatment. This Standard includes definitions of common terms used in the description of the dose expression of plant protection products (Appendix 1). One special focus of this Standard is the description of the dose expressions in high growing crops. Information is also given on how to interconvert between the most common dose expression terms in this particular group of crops and on the parameters to be measured and the equations (Appendix 2). Harmonized procedures on the measurement of individual plant parameters in the field are also illustrated to facilitate consistent approaches (Appendix 3). National methods for adjusting the recommended dose in country‐specific situations are outside of the scope of this Standard. Specific approval and amendment First approved in 2005–09. Revision approved in 2012–09. Revision approved in 2020–09 following discussion in the EPPO Workshop on harmonized dose expression for the zonal evaluation of plant protection products in high growing crops (Vienna, 2016‐10‐18/20).