US lawWashingtonRegulationsTitle 16 — AGRICULTURE, DEPARTMENT OFChapter 16-232 — USE RESTRICTED HERBICIDES IN CERTAIN COUNTIES16-232-053WAC 16-232-053WAC 16-232-053. Application of Paraquat or Diquat by air in Walla Walla CountyLast amended: 2019Year: 2026Length: 14 wordsOfficial source Aerial application of Paraquat and Diquat is prohibited in areas 2B, 4, and 6.PreviousWAC 16-232-047NextWAC 16-232-056