The proposed International Standard draft [ISO TC 23/SC 06 DIS 22369. Equipment for crop
protection—drift classification of sprayers and nozzles.] to classify sprayers according to drift
risk requires the sprayer to be operated in the field in well defined conditions of wind [ISO TC
23/SC 06 N 22866. Equipment for crop protection—methods for the field measurement of
spray drift.]. The aim was to find an alternative sprayer classification procedure which did not
require operation in stable wind conditions. A test bench system was developed to measure …

Abstract An International Standard draft (ISO 22369) has been proposed to classify sprayers
according to drift risk. The methodology outlined, however, is difficult to apply. With the aim
to find an alternative and simpler sprayer classification procedure, a test bench able to
measure the potential drift generated by boom sprayers has been realized at DEIAFA in
Italy. Comparison tests between DEIAFA test bench and ISO methodology have been
carried out on a conventional sprayer equipped with traditional and air induction flat fan …