MOVEMENT OF 2,4,5-T THROUGH LARGE SOIL COLUMNS
- 1 September 1980
- journal article
- research article
- Published by Wolters Kluwer Health in Soil Science
- Vol. 130 (3), 157-162
- https://doi.org/10.1097/00010694-198009000-00007
Abstract
The movement of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) through large soil columns was measured and simulated by means of a model that incorporates adsorptiondesorption and biological degradation processes. Water(3H) and 2,4,5-T (14C) distributions with depth were calculated after each of several irrigations and compared with concentrations of the isotopes measured in soil solution samples collected at several depths via suction cups inserted into the soil columns. The model successfully predicted tritiated water distributions after several irrigations and adequately predicted herbicide concentrations after the first irrigation. Nevertheless, predicted herbicide concentrations in the soil solution after the second and subsequent irrigations were much greater than observed values. The movement of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) through large soil columns was measured and simulated by means of a model that incorporates adsorptiondesorption and biological degradation processes. Water(3H) and 2,4,5-T (14C) distributions with depth were calculated after each of several irrigations and compared with concentrations of the isotopes measured in soil solution samples collected at several depths via suction cups inserted into the soil columns. The model successfully predicted tritiated water distributions after several irrigations and adequately predicted herbicide concentrations after the first irrigation. Nevertheless, predicted herbicide concentrations in the soil solution after the second and subsequent irrigations were much greater than observed values. © Williams & Wilkins 1980. All Rights Reserved.This publication has 4 references indexed in Scilit:
- SOLUTE TRANSPORT THROUGH SOIL WITH ADSORPTION AND ROOT WATER UPTAKE COMPUTED WITH A TRANSIENT AND A CONSTANT-FLUX MODELSoil Science, 1980
- Solute Distribution Profiles Computed with Steady‐State and Transient Water Movement ModelsSoil Science Society of America Journal, 1977
- Predicting 2,4,5‐T Movement in Soil ColumnsJournal of Environmental Quality, 1976
- Disappearance of 2,4-dichlorophenoxyacetic Acid and 2,4,5-trichlorophenoxyacetic Acid from Soil1Soil Science Society of America Journal, 1952