6 articles
Bromacil
Bromacil (5-bromo-3-sec-butyl-6-methyluracil, CAS 314-40-9) is a DuPont-developed uracil photosynthesis-inhibiting herbicide for noncropland, citrus, and pineapple, persistent and mobile in soil and detected in groundwater.
Chloridazon
Chloridazon (pyrazon, CAS 1698-60-8), a pyridazinone PSII-inhibitor herbicide introduced in 1962 for pre-emergence broadleaf weed control in sugar beet; EU approval expired 2018, and its persistent metabolites DPC and Me-DPC contaminate European groundwater.
Lenacil
Lenacil (CAS 2164-08-1) is a uracil herbicide, a photosystem II inhibitor (HRAC 5) used in sugar beet, fodder beet and spinach. EU approval renewed in 2025 until 30 June 2040; classified Carc 2 (H351), not an endocrine disruptor.
Norflurazon
Norflurazon (CAS 27314-13-2), a pyridazinone preemergent bleaching herbicide registered in the US in 1974; inhibits phytoene desaturase, persistent and mobile in soil, not EU-approved, possible human carcinogen (Group C).
Pyridafol
Pyridafol (CL 9673), 6-chloro-3-phenylpyridazin-4-ol, is a phenylpyridazine photosystem II inhibitor herbicide and the main hydrolysis product and metabolite of pyridate; not EU-approved, regulated as pyridate residues.
Terbacil
Terbacil (Sinbar; 3-tert-butyl-5-chloro-6-methyluracil) is a persistent, mobile uracil herbicide, US-registered since 1966, inhibiting photosystem II in alfalfa, mint, orchard, and sugarcane weed control.