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Common name: Trifluralin (BSI, E-ISO, ANSI, WSSA, JMAF); Trifluraline ((f) F-ISO)

IUPAC name: á, á, á-trifluoro-2, 6-dinitro-N, N-dipropyl-p-toluidine

PHYSICAL CHEMISTRY

Mol. Wt. 335.3 M. F. C13H16F3N3O4 Form Yellow-orange crystals.

ECOTOXICOLOGY

Birds Acute oral LD50 for bobwhite quail >2000 mg/kg. Dietary LC50 (5 d) for bobwhite quail and mallard ducks >5000 mg/kg. Fish LC50 (96 h) for young rainbow trout 0.088, young bluegill sunfish 0.089 mg/l. Daphnia LC50 (48 h) 0.245 mg/l; NOEC (21 d) 0.051 mg/l.

Algae EC50 (7 d) for Selenastrum capricornutum 12.2 mg/l; NOEC 5.37 mg/l.Other aquatic spp. LD50 (96 h) for grass shrimps (Palaemonetes sp. ) 0.64 mg/l. Bees LD50 (oral and contact) >100 ìg/bee. Worms LC50 (14 d) >1000 mg/kg dry soil; NOEC (reduced bodyweight) <171 mg/kg.

Common name: Quizalofop-P-ethyl (BSI, draft E-ISO)

IUPAC name ethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate

CAS RN [100646-51-3] Development codes D(+) NC-302 (Nissan); DPX-79376 (DuPont)

PHYSICAL CHEMISTRY: Mol. Wt. 372.8 M. F. C19H17ClN2O4 Form White, crystalline, odourless solid.

ANALYSIS
Product by hplc. Residues by glc. Details from Nissan

MAMMALIAN TOXICOLOGY
Oral Acute oral LD50 for male rats 1210, female rats 1182, male mice 1753, female mice 1805 mg/kg. NOEL (90 d) for rats 7.7 mg/kg daily.

Common name quizalofop-P-tefuryl
IUPAC name ()-tetrahydrofurfuryl-(R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate

PHYSICAL CHEMISTRY

Quizalofop-P-tefuryl
Mol. Wt. 428.9 M. F. C22H21ClN2O5 Form Thick yellow liquid, which can crystallise upon standing at room temperature.

Quizalofop-P-tefuryl

Uses Control of annual grasses, such as Avena fatua and Alopecurus myosuroides, and perennial grasses, such as Sorghum halepense and Elymus repens, in potatoes, flax, oilseed rape, peas, sugar beet, cotton and soya beans. Applied at 30-240 g/ha.

Formulation types EC. Compatibility Certain post-emergence broad-leaved herbicides are incompatible with quizalofop-P-tefuryl.

Diflufenican is a kind of selective contact and residual herbicide, absorbed principally by the shoots of germinating seedlings, with limited translocation. Applied pre- or early post-emergence in autumn-sown wheat and barley, to control grass and broad-leaved weeds, particularly Galium, Veronica and Viola spp. Normally used in combination with isoproturon or other cereal herbicides.