Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SELECTIVITY AND MODE OF ACTION OF CARFENTRAZONE-ETHYL, A NOVEL PHENYLTRIAZOLINONE HERBICIDE
Autore:
DAYAN FE; DUKE SO; WEETE JD; HANCOCK HG;
Indirizzi:
AUBURN UNIV,DEPT BOT & MICROBIOL AUBURN AL 36849 AUBURN UNIV,DEPT BOT & MICROBIOL AUBURN AL 36849 ARS,SO WEED SCI LAB,USDA STONEVILLE MS 38776 FMC CORP HAMILTON GA 31811
Titolo Testata:
Pesticide science
fascicolo: 1, volume: 51, anno: 1997,
pagine: 65 - 73
SICI:
0031-613X(1997)51:1<65:SAMOAO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIPHENYL ETHER HERBICIDES; OXIDASE-INHIBITING HERBICIDES; PROTOPORPHYRINOGEN OXIDASE; PHYSIOLOGICAL-BASIS; ACIFLUORFEN-METHYL; HYDROXYLATION; CHLOROPLASTS; GLYCINE; BINDING; TARGET;
Keywords:
METABOLISM; PHYTOTOXICITY; PROTOPORPHYRIN IX; PROTOPORPHYRINOGEN OXIDASE; TOLERANCE; CARFENTRAZONE-ETHYL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
F.E. Dayan et al., "SELECTIVITY AND MODE OF ACTION OF CARFENTRAZONE-ETHYL, A NOVEL PHENYLTRIAZOLINONE HERBICIDE", Pesticide science, 51(1), 1997, pp. 65-73

Abstract

Post-emergence application of carfentrazone-ethyl at rates as low as 2.2 g ha(-1) caused greater leaf injury and growth reduction in ivyleaf morningglory (Ipomoea hederacea) and velvetleaf (Abutilon theophrasti) than in soybean (Glycine max). The herbicide was more rapidly metabolized in the crop than in the weed species, with 26.7, 54.3 and 60.6%of the parent compound remaining in soybean, ivyleaf morningglory andvelvetleaf, respectively, 24 h after exposure. The free acid metabolite, carfentrazone, was present in all species and accounted for 21.2-27.4% of the total radioactivity. Unknown metabolites (R-f 0 and 0.22) were four to five times more abundant in soybean than in the weed species. Carfentrazone-ethyl induced more leakage from leaf discs from theweeds than those from soybean and the degree of injury correlated with the amount of protoporphyrin IX (Proto IX) present in the treated tissues. Both carfentrazone-ethyl and carfentrazone were potent inhibitors of protoporphyrinogen oxidase (Protox). Therefore, the selectivity of this herbicide may, at least in part, be attributed to the lower accumulation of Proto IX in soybean than in the weeds, probably because of the ability of soybean to metabolize more carfentrazone into unknown metabolites than the weeds.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/08/20 alle ore 05:25:53