HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Baer, U. Articles by Calvet, R. Search for Related Content PubMed Articles by Baer, U. Articles by Calvet, R. Agricola Articles by Baer, U. Articles by Calvet, R.

Fate of Soil Applied Herbicides: Experimental Data and Prediction of Dissipation Kinetics

Unité de Science du Sol, INRA/INA-PG, Centre de Grignon, 78850 Thiverval-Grignon, France.

^* Corresponding author (calvet{at}ecgn.grignon.inra.fr).

ABSTRACT

Dissipation kinetics of several soil-applied herbicides [atrazine (6-chloro-2 ethylamino-4 isopropyl-1,3,5-triazine-2,4 diamine), simazine (6-chloro-2,4-diethyl-1,3,5-triazine-2,4-diamine), diuron (3-(3,4-dichloro-phenyl)-1,1-dimethylurea), and sulcotrione (2-(2-chloro-4-mesyl-benzoyl)cyclohexane-1,3-dione)] are studied at three sites having different climatic, pedological, and agronomical characteristics. Field data were obtained during 2 yr, 1993 and 1994. Information was completed by laboratory measurements of adsorption, desorption, and disappearance kinetics obtained at two temperatures (15 and 28°C) and two soil water contents (50 and 90% soil water capacity). Adsorption and desorption conform to the Freundlich description, sulcotrione being the less adsorbed. Laboratory disappearance kinetics can be approximately described with a first-order law under some conditions. Calculated laboratory disappearance rate coefficients are used to simulate field dissipation kinetics in the 0- to 10-cm soil layer, taking into account the effects of soil temperature (Arrhenius formula) and water content (Walker relation). Observed field dissipation kinetics, which are not fully described by a first-order law, can be approximately simulated. Results are discussed from the points of view of agronomy and environment.

This article has been cited by other articles:

				F. Flores-Cespedes, E. Gonzalez-Pradas, M. Fernandez-Perez, M. Villafranca-Sanchez, M. Socias-Viciana, and M.D. Urena-Amate Effects of Dissolved Organic Carbon on Sorption and Mobility of Imidacloprid in Soil J. Environ. Qual., May 1, 2002; 31(3): 880 - 888. [Abstract] [Full Text] [PDF]

				X. Louchart, M. Voltz, P. Andrieux, and R. Moussa Herbicide Transport to Surface Waters at Field and Watershed Scales in a Mediterranean Vineyard Area J. Environ. Qual., May 1, 2001; 30(3): 982 - 991. [Abstract] [Full Text] [PDF]