| Customization: | Available |
|---|---|
| CAS No.: | 122008-85-9 |
| Formula: | C20h20fno4 |
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| Common Name | Pyribenzoxim3%+ Cyhalofop-butyl12%EC |
| Cas No. | 122008-85-9 |
| Formulation | EC |
| Application/Uses | Biochemistry Fatty acid synthesis inhibitor, by inhibition of acetyl CoA carboxylase (ACCase). Selectivity between susceptible grasses and dicotyledonous plants is attributed to the forms of ACCase present and their compartmentalisation within plant cells. Susceptible grasses contain the susceptible eukaryotic form of ACCase; dicotyledonous plants contain both susceptible eukaryotic and herbicide-resistant prokaryotic forms of ACCase, rendering them resistant to cyhalofop-butyl. Rice tolerance to cyhalofop-butyl is due to rapid metabolism to the herbicidally inactive diacid (t1/2 <10 hr), whereas susceptible grasses metabolise cyhalofop-butyl to the herbicidally active monoacid. Mode of action 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. Formulation types EC; EW; GR. Compatibility Not compatible with most broadleaf and sedge herbicide products. Selected products: 'Cleaner' (Dow AgroSciences); 'Clincher' (Dow AgroSciences); mixtures: 'Clincher Bas' (+ bentazone-sodium) (Dow AgroSciences) ' (Arvesta) |
| 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. |
| 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 |
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