1. Common name: 1) Cyhalofop-butyl; 2) Ethoxysulfuron
2. Chemical names:
1) Cyhalofop-butyl: butyl(R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoate
2) Ethoxysulfuron: 2-ethoxyphenyl[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]sulfamate
3. Chemical class:
1) Cyhalofop-butyl: phenoxypropionic herbicides(aryloxyphenoxypropionic)
2) Ethoxysulfuron: sulfonylurea herbicides (pyrimidinylsulfonylurea)
4. Type of formulation: OD (Oil Dispersion)
5. Active ingredient and its content: 1) Cyhalofop-butyl 200 g/L
2) Ethoxysulfuron at 20 g/L.
6. Structural formula:
1) Cyhalofop-butyl:
2) Ethoxysulfuron:
7. Toxic class (WHO): 1) Cyhalofop-butyl,Slightly hazardous (III)
2) Ethoxysulfuron,Slightly hazardous (III)
8. CAS registry number: 1) Cyhalofop-butyl: 122008-85-9
2) Ethoxysulfuron:126801-58-9
9.Appearance: yellowto brown viscous liquid.
10.Applications:
1) Cyhalofop-butyl
Biochemistry: Fatty acidsynthesis inhibitor, by inhibition of acetyl CoA carboxylase (ACCase).Selectivity between grasses and broad-leaves is attributed to the form(s) ofACCase present and the compartmentalisation of these forms within plant cell
Modeof Action: Selective post-emergence herbicide obsorbed mainly by foliage andtranslocates to the stem and roots of grasses.
Uses: For post-emergencecontrol of grass weeds in rice.
2) Ethoxysulfuron.
Biochemistry: Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts byinhibiting biosynthesis othe essential amino acids valine and isoleucine,hence stopping cell division and plant growth. Selectivity is Due to differential metabolism in crop and weed (H Koeher & G Dickerhof, Proc. Br.Crop Prot. Conf. -Weeds, 1995, 1, 249). Metabolic basis of crop selectivity insulfonylureas reviewed (M. K. Koeppe & H. M. Brown, Agro-Food-Industry, 6,9-14 (1995)).
Uses: For broad-leave
Mixing and dilution:Add therequired volume of product to the half-filled spray tank while agitating thewater, then fill water to the required level. Continue agitation at all timesduring spraying, do not stop agitation until the tank is completely empty.
Sprayimmediately after mixing
Target weed and rate:
Crop | weed | Rate | Method of Application |
Direct-seeded rice | Annual grass weeds and broad-leaved weeds | 400-600ml/ha. | Water dilution and foliar spray |
Transplanted rice | Annual grass weeds and broad-leaved weeds | 400-600ml/ha. | Water dilution and foliar spray |
Note:
1) In direct-seededrice, apply the product 10-15 days after seeding during 2-4 leaf stage of rice,or 1.5-2.5 leaf stage of weeds.2) In transplantedrice, apply the product 10-20 days after transplanting, when the weeds are at2-3 leaf stage.
3) When this product isused to control the large grass weeds, use it at high rate.
