WAC 16-230-160. Desiccants and defoliants — Ground equipment — Droplet spectrum requirements for the entire area under order

The following requirements apply to the entire area under order as listed in WAC 16-230-150 : (1) Ground applications of use restricted desiccants and defoliants shall conform to the manufacturer's specified combination of nozzle type/size and pressure in pounds per square inch (psi) at the nozzle that produces a spray droplet size that falls within the medium (or larger) range as defined by the ASABE standards. (2) The Washington state department of agriculture may issue a permit upon receipt of a written request to apply use restricted desiccants and defoliants within the area as described in WAC 16-230-150 with nozzles, nozzle type, drift control additives, and/or arrangements other than those allowed herein. The director will consider safety factors and the possible exposure to susceptible crops in the areas of proposed application before a permit will be issued. (3) Diesel and other fuel oils are prohibited in all tank mixes with desiccants and defoliants.