Table 1.

Soil

Compound (name and/or code)	Persistence
prosulfuron	Moderate to high persistence, laboratory Single first order DT50 = 15.4–229 days (at 20°C and pF2) Low to moderate persistence, European field dissipation trials Single first order and biphasic kinetics DT50 = 3.8–20.5 days (DT90 15.2–150 days)
CGA159902 (prosulfuron phenyl sulfonamide)	Moderate to very high persistence Single first order and biphasic kinetics DT50 = 3.1 – > 1,000 days (DT90 140 – > 1,000 days laboratory conditions at 20°C and pF2)
CGA150829 (triazine amine)	Moderate to very high persistence Single first order and biphasic kinetics DT50 = 22.5 – > 1,000 days (DT90 97 – > 1,000 days laboratory conditions at 20°C and pF2)
CGA300406 (O‐desmethyl‐prosulfuron)	Low to moderate persistence Single first order DT50 = 2.6–47.5 days (laboratory conditions at 20°C and pF2 or 40% MWHC or 60% FC)
CGA325025 (demethoxy amino‐prosulfuron)	Moderate to high persistence Single first order DT50 = 47.4–102 days (laboratory conditions at 20°C and pF2)
CGA349707	Medium to very high persistence Single first order DT50 = 91.9–737 days (laboratory conditions at 20°C and pF2 or 40% MWHC or 60% FC)
SYN542604 (M5)	Moderate to high persistence Single first order DT50 = 25.0–184 days (laboratory conditions at 20°C and pF2 or 40% MWHC or 60% FC)
SYN547308 (M18)	Moderate to high persistence Biphasic kinetics DT50 = 7.8–174 days (DT90 120–654 days, laboratory conditions at 20°C and pF2)