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Titolo:
Laboratory degradation studies of bentazone, dichlorprop, MCPA, and propiconazole in Norwegian soils
Autore:
Thorstensen, CW; Lode, O;
Indirizzi:
Norwegian Crop Res Inst, Plant Protect, N-1432 As Nlh, Norway Norwegian Crop Res Inst As Nlh Norway N-1432 tect, N-1432 As Nlh, Norway
Titolo Testata:
JOURNAL OF ENVIRONMENTAL QUALITY
fascicolo: 3, volume: 30, anno: 2001,
pagine: 947 - 953
SICI:
0047-2425(200105/06)30:3<947:LDSOBD>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
(2,4-DICHLOROPHENOXY)ACETIC ACID; MICROBIAL ACTIVITY; BIODEGRADATION; HERBICIDE; SORPTION; 2,4-D; PESTICIDE; TEMPERATURE; PERSISTENCE; LYSIMETERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Thorstensen, CW Norwegian Crop Res Inst, Plant Protect, Hogskoleveien 7, N-1432 As Nlh, Norway Norwegian Crop Res Inst Hogskoleveien 7 As Nlh NorwayN-1432
Citazione:
C.W. Thorstensen e O. Lode, "Laboratory degradation studies of bentazone, dichlorprop, MCPA, and propiconazole in Norwegian soils", J ENVIR Q, 30(3), 2001, pp. 947-953

Abstract

Laboratory degradation studies were performed in Norwegian soils using twocommercial formulations (Tilt and Triagran-P) containing either propiconazole alone or a combination of bentazone, dichlorprop, and MCPA. These soilsincluded a fine sandy loam from Hole and a loam from Kroer, both of which are representative of Norwegian agricultural soils. The third soil was a highly decomposed organic material from the Froland forest. A fourth soil from the Skuterud watershed was used only for propiconazole degradation. After84 d, less than 0.1% of the initial MCPA concentration remained in all three selected soils. For dichlorprop, the same results were found for the fine sandy loam and the organic-rich soil, but in the loam, 26% of the initialconcentration remained. After 84 d, less than 0.1% of the initial concentration of bentazone remained in the organic-rich soil, but in the loam and the fine sandy loam 52 and 69% remained, respectively. Propiconazole was shown to be different from the other pesticides by its persistence. Amounts ofinitial concentration remaining varied from 40, 70, and 82% in the reference soils after 84 d for the organic-rich soil; fine sandy loam, and loam, respectively. The organic-rich soil showed the highest capacity to decomposeall four pesticides. The results from the agricultural soils and the Skuterud watershed showed that the persistence of psopiconazole was high. Pesticide degradation was approximated to first-order kinetics. slow rates of degradation, where more than 50% of the pesticide remained in the soil after the 84 d duration of the experiment, did not fit well with first-order kinetics.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 08:20:49