Common Name | cyhalofop-butyl |
Cas No. | 122008-85-9 |
Formulation | EC, |
Application/Uses | Post-emergence herbicide with foliar uptake only and no soil activity. A systemic herbicide that is readily absorbed by plant tissue, is moderately phloem-mobile and accumulates in meristematic regions. Grass weeds cease growth immediately after treatment, with yellow patches appearing within 2-3 days to one week, leading to necrosis and death of the whole plant within 2 to 3 weeks. Uses For post-emergence control of grass weeds in rice. Applied at 75-100 g/ha in tropical rice and 180-310 g/ha in temperate rice. For selectivity in Poaceae species, see M. Ito et al., J. Weed Sci. & Tech. 43(2) 122-128 (1998). Phytotoxicity Rice is completely tolerant to due to rapid metabolism to the inactive diacid. |
ECOTOXICOLOGY |
The high toxicity of cyhalofop-butyl to fish and other aquatics is mitigated by the rapid degradation to less-toxic metabolites. Birds Acute oral LD50 for bobwhite quail and mallard ducks >5620 mg/kg. Dietary LC50 for bobwhite quail and mallard ducks >2250 ppm. Fish LC50 for rainbow trout >0.49, bluegill sunfish 0.76 mg/l. These values are at or above the aqueous solubility of cyhalofop-butyl. Daphnia LC50 >100 mg/l. Algae EC50 for Selenastrum capricornutum >1, Navicula sp. 0.64-1.33 mg/l. Soil and plant transformation products are less toxic to Selenastrum capricornutum. Other aquatic spp. EC50 for eastern oyster (Crassostrea virginica) 0.52, scud (Gammarus sp.) 0.81 mg/l. These values are at or above the aqueous solubility of cyhalofop-butyl. Bees NOEC for honeybees >100 mg/bee. Worms LD50 (14 d) for earthworms >1000 mg/kg.
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Product Name | Specification |
Fomesafen | 98% TC , 25% SL , 480g/L SL |
2,4-D ACID | 98% TC , 860g/L SL, 720g/L SL |
Metribuzin | 95% TC , 70% WP , 70% WDG , 480g/L SC |
Amidosulfuron | 97% TC, 50% WDG |
Imazapic | 97% TC , 70% WDG , 70% WP, 240g/L SL |
Bispyribac-sodium | 97% TC , 400g/L SC , 25% WP , 100g/L SC |
Clethodim | 93% TC , 120g/L EC , 240g/L EC |
Linuron | 50% WP , 450g/L SC |
Bensulfuron-methyl | 97% TC , 30% WP , 20% WDG |
Fenoxaprop-P-butyl | 96% TC , 100g/L EC , 69g/L EW |
Tribenuron-methy | 97% TC , 75% WDG |
Dicamba | 98% TC , 96% TC , 480g/L SL |
Cyhalofop-butyl | 96% TC , 15% EW |
Clodinafop-propargyl | 95% TC , 15% WP , 15% EW , 300g/L EW |
Imazamox | 98% TC , 40g/L SL |
Atrazine | 97% TC , 80% WP , 50% WP , 500g/L SC |
S-metolachlor | 97% TC 960g/L EC |
Glufosinate-ammonium | 97% TC , 200g/L SL , 150g/L SL |
Quizalofop-P-ethyl | 96% TC , 100g/L EC , 50g/L EC |
Glyphosate | 95% TC 30% SL |
Haloxyfop-R-methyl | 90% TC , 108g/L EC |
Pendimethalin | 92% TC , 330g/L EC |
Acetochlor | 95% TC 900g/L EC , 500g/L EC |
Bentazone | 97% TC 480g/L SL |
Nicosulfuron | 97% TC , 75% WP , 40g/L OSC |
Imazapyr | 97% TC , 250g/L SL |
Clethodim | 240g/L EC, 120g/L EC |
Metolachlor | 97% TC , 960g/L EC , 720g/L EC |
Diquat | 40% TK , 200g/L SL , 150g/L SL |
Diuron | 98% TC , 80% WDG , 25% WP |
Paraquat | 42% TK , 200g/L SL |
Rimsulfuron | 95% TC , 25% WDG |
Butachlor | 95% TC , 900g/L EC , 500g/L EC |
Metazachlor | 97% TC , 500g/L SC |
Carfentrazone-ethyl | 40% WDG , 400g/L EC , 10% WP |
Metsulfuron-methyl | 96% TC , 60% WDG , 60% DF , 5% WDG |
Oxyfluorfen | 95% TC , 240g/L EC |
Imazathapyr | 98% TC , 70% WP , 16% WDG , 100g/L SL |
Halosulfuron | 97% TC , 75% WDG |
Terbuthylazine | 97% TC , 500g/L SC |