Pentoxazone

Pentoxazone (225-450 g/hm²; 21 d post-treatment) exhibits broad-spectrum herbicidal activity against direct-seeding rice field weeds, with >90% fresh weight inhibition of 5 weed species at 225 g/hm² and 7 weed species at 450 g/hm², while showing low activity against Oryza sativa f. spontanea^[1].
Pentoxazone (60-600 g/hm²) has high herbicidal activity against Echinochloa crus-galli, Digitaria sanguinalis, Eclipta prostrata, and Cyperus iria, with GR₅₀ values ranging from 82.15 to 189.17 g/hm² and GR₉₀ values ranging from 158.60 to 513.01 g/hm^2[1].
Pentoxazone (450-1800 g/hm²; 4 times) is safe for 8 tested main rice varieties at doses up to 1800 g/hm², with plant height inhibition rates of 1.89%-5.16% and fresh weight inhibition rates of 1.47%-4.14% at the highest tested dose^[1].
Pentoxazone (0-2700 g/hm²) has good selectivity between 4 tested rice varieties and 4 direct-seeding rice field weeds, with selectivity indexes ranging from 3.27 to 28.24, and shows better selectivity between rice and Eclipta prostrata, Cyperus iria than the reference herbicide^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.