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Point and nonpoint source leaching of atrazine from a corn field: Effects on tile drainage water quality
Authors: P. Milbum, D.A. Leger, H. O'Neill, K. MacQuarrie and J.E. Richards
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Download file: https://library.csbe-scgab.ca/docs/journal/37/37_4_269_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 37 (1995)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/37/37_4_269_raw.pdf
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Description: Atrazine concentrations in tile drainage waters emanating from a continuously cropped, commercial com field (silt to clay loam) were monitored for 30 consecutive months, March 1989 to September 1991. Water samples were collected approximately every two weeks from three independent tile drainage plots within the field. Excluding the effects of an accidental spill, atrazine concentrations in the tile water ranged from 0.1 to 29 J.1g/L. Concentrations declined with time after application to approximately 0.1 J.1g/L prior to planting the following spring. In June 1990, approximately 60 g of active ingredient were accidently discharged in one of the plots followed by a 71 mm rainfall (in 12 h) several days later. Subsequent auto-sampling of the drainage waters every 4 hours revealed atrazine + deethylatrazine concentrations to 150 J.1g/L. Concentrations decreased to less than the maximum acceptable concentration for drinking water (MAC) within six days of the initiation of tile flow. As a result of this storm, about 18 g of atrazine leached from the soil into the tile drainage water. This was in contrast to simulation results for a uniform porosity soil that indicated no atrazine would be transported to drain depth. Atrazine + deethylatrazine concentrations declined to <1.0 J.1g/L by May 1991, similar to concentrations in the other plots where atrazine was properly applied. Documented case histories of this nature are helpful in assessing the degree and duration of hazard resulting from accidental release of atrazine in a field crop setting.
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Citation: P. Milbum, D.A. Leger, H. O'Neill, K. MacQuarrie and J.E. Richards 1995. POINT AND NONPOINT SOURCE LEACHING OF ATRAZINE FROM A CORN FIELD: EFFECTS ON TILE DRAINAGE WATER QUALITY. Canadian Agricultural Engineering 37(4):269-277.
Volume: 37
Issue: 4
Pages -
Contributor:
Date: 1995
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
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Other files:
DOI:
Description: Atrazine concentrations in tile drainage waters emanating from a continuously cropped, commercial com field (silt to clay loam) were monitored for 30 consecutive months, March 1989 to September 1991. Water samples were collected approximately every two weeks from three independent tile drainage plots within the field. Excluding the effects of an accidental spill, atrazine concentrations in the tile water ranged from 0.1 to 29 J.1g/L. Concentrations declined with time after application to approximately 0.1 J.1g/L prior to planting the following spring. In June 1990, approximately 60 g of active ingredient were accidently discharged in one of the plots followed by a 71 mm rainfall (in 12 h) several days later. Subsequent auto-sampling of the drainage waters every 4 hours revealed atrazine + deethylatrazine concentrations to 150 J.1g/L. Concentrations decreased to less than the maximum acceptable concentration for drinking water (MAC) within six days of the initiation of tile flow. As a result of this storm, about 18 g of atrazine leached from the soil into the tile drainage water. This was in contrast to simulation results for a uniform porosity soil that indicated no atrazine would be transported to drain depth. Atrazine + deethylatrazine concentrations declined to <1.0 J.1g/L by May 1991, similar to concentrations in the other plots where atrazine was properly applied. Documented case histories of this nature are helpful in assessing the degree and duration of hazard resulting from accidental release of atrazine in a field crop setting.
Keywords:
Résumé:
Mots-clés:
Citation: P. Milbum, D.A. Leger, H. O'Neill, K. MacQuarrie and J.E. Richards 1995. POINT AND NONPOINT SOURCE LEACHING OF ATRAZINE FROM A CORN FIELD: EFFECTS ON TILE DRAINAGE WATER QUALITY. Canadian Agricultural Engineering 37(4):269-277.
Volume: 37
Issue: 4
Pages -
Contributor:
Date: 1995
Technical field:
Conference name:
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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