Integrated Soil, Crop and Water Management System to Abate Herbicide and Nitrate Contamination of the Great Lakes

Corn management practices, incorporating annual ryegrass intercrop, conservation tillage and water table management, were evaluated to reduce herbicide and N0−3 losses through surface runoff and tile drainage. The integrated management system being developed at Harrow in S.W. Ontario reduced herbici...

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Bibliographic Details
Published in:Water science and technology 1993-01, Vol.28 (3-5), p.497-507
Main Authors: Tan, C S, Drury, C F, Gaynor, J D, Welacky, T W
Format: Article
Language:English
Subjects:
Agricultural practices
Atrazine
Banding
Conservation tillage
Contamination
Control
Corn
Drainage
Drainage control
Drainage management
Drainage measurement
Drainage systems
Drainage water
Drought
Groundwater table
Growing season
Herbicides
Lakes
Metolachlor
Metribuzin
Runoff
Soil
Soil conservation
Soil contamination
Soil erosion
Soil water
Surface runoff
Tile drainage
Tillage
Water conservation
Water management
Water shortages
Water table
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Summary:Corn management practices, incorporating annual ryegrass intercrop, conservation tillage and water table management, were evaluated to reduce herbicide and N0−3 losses through surface runoff and tile drainage. The integrated management system being developed at Harrow in S.W. Ontario reduced herbicide input 50% by banding the chemical over the seed row. Runoff events close to herbicide application contained high concentrations of atrazine, metribuzin and metolachlor. However, the volume of runoff was low during the 1991 growing season, therefore herbicide loss was low (
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.1993.0453