scope:

This part of ISO 24253 specifies field measurements to determine location, dispersion and quantity of spray in a crop, distributed by field crop sprayers used to apply plant protecting products (PPP) to arable and vegetable crops. This part of ISO 24253 allows flexibility in the arrangement of field tests, but specifies standardized measurement procedures that are useful to compare the results from different field experiments or laboratory test, like horizontal patternator as given in ISO 5682. It does not deal with the deposition of spray outside the treatment zone nor that lost as airborne spray drift. However, the combination of this part of ISO 24253 with the protocol for field measurements of spray drift as given in ISO 22866 may result in a good evaluation of spray mass balance in arable field crop (boom) spraying. On the other hand, its combination with the measuring of sprayer boom movements in the field (see ISO 14131) can also be used to quantify the spray deposit and its variation in the field inside crop canopy as a result of the boom movement.