Sensitivity of a Pesticide Leaching-Potential Index Model to Variations in Hydrologic and Pesticide-Transport Properties

2002 ◽  
Vol 9 (2) ◽  
pp. 66-73 ◽  
Author(s):  
Stephanie A. Schlosser ◽  
John E. McCray
Keyword(s):  
Transport Properties ◽  
Leaching Potential ◽  
Pesticide Transport ◽  
Index Model ◽  
Potential Index ◽  
Pesticide Leaching

scholarly journals Pesticide Leaching Potential in a Shallow Unconfined Aquifer

2010 ◽  
Vol 8 (1) ◽  
pp. 1-16 ◽  
Author(s):  
A. H. M. Faisal ANWAR ◽  
Anika YUNUS
Keyword(s):  
Unconfined Aquifer ◽  
Leaching Potential ◽  
Pesticide Leaching

Assessing the impact of regional rainfall variability on rapid pesticide leaching potential

2010 ◽  
Vol 113 (1-4) ◽  
pp. 56-65 ◽  
Author(s):  
Gavan McGrath ◽  
Christoph Hinz ◽  
Murugesu Sivapalan
Keyword(s):  
Rainfall Variability ◽  
Leaching Potential ◽  
The Impact ◽  
Regional Rainfall ◽  
Pesticide Leaching

Comparison of pesticide leaching potential to groundwater under EU FOCUS and site specific conditions

2013 ◽  
Vol 463-464 ◽  
pp. 432-441 ◽  
Author(s):  
Herve Labite ◽  
Nicholas M. Holden ◽  
Karl G. Richards ◽  
Gaelene Kramers ◽  
Alina Premrov ◽  
...  
Keyword(s):  
Site Specific ◽  
Leaching Potential ◽  
Pesticide Leaching

Determination of solute leaching potential within a hummocky agricultural landscape

2007 ◽  
Vol 87 (5) ◽  
pp. 541-549 ◽  
Author(s):  
J. Thibodeau ◽  
L G Fuller ◽  
D S Chanasyk
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Agricultural Landscape ◽  
Soil Classification ◽  
Agricultural Landscapes ◽  
Water Soluble ◽  
Soil Horizon ◽  
Leaching Potential ◽  
Potential Index ◽  
Curvature Measurements

Leaching of water-soluble contaminants has resulted in degradation of groundwater quality. This research project examined the long-term spatial variability of leaching processes within two hummocky, agricultural landscapes near Bittern Lake, in central Alberta. Analysing the distribution of soil profiles within a landscape, we created a leaching potential index based on a soil profile index (SPI) and plan curvature measurements. The index accurately differentiated locations of very high and high leaching potential from low and very low leaching potential. This index may become a useful tool to determine the variability of leaching within an agricultural landscape, to identify areas of high leaching potential, to determine agricultural best management practices, and to minimize contamination of groundwater. Key words: Soil-landscape, soil horizon, soil classification, sulphate, electrical conductivity, leaching

Site-Specific Pesticide Recommendations: The Final Step in Environmental Impact Prevention

1992 ◽  
Vol 6 (3) ◽  
pp. 736-742 ◽  
Author(s):  
Arthur G. Hornsby
Keyword(s):  
Environmental Fate ◽  
Aquatic Toxicity ◽  
Hazard Index ◽  
Selection Procedure ◽  
Economic Consequences ◽  
Application Site ◽  
Site Specific ◽  
Leaching Potential ◽  
Potential Index ◽  
Groundwater Hazard

A screening procedure to minimize adverse water quality impacts of pesticide application is presented that matches pesticide parameters to site-specific soil ratings. The pesticide parameters include a Relative Leaching Potential Index (RLPI), a Relative Runoff Potential Index (RRPI), the U.S. Environ. Prot. Agency (USEPA) lifetime health advisory level (HAL), and aquatic toxicity (LC50). Criteria used in developing soil ratings are described. Pesticide selection is accomplished by matching pesticide parameters values for the array of pesticides that control the pest of interest to soil ratings at the application site using selection criteria. A worksheet is presented to facilitate organization of information for the selection procedure and to serve as a record of the pesticide applicator's decision. The linking of an environmental fate model to a geographic information system (GIS) to create thematic maps of pesticide leaching potentials in terms of probability of exceeding the HAL in groundwater is described. A cost vs. groundwater hazard index frontier is described that suggests a method to assess the economic consequences of alternative pesticide selections.

Variability of vertical bromide redistribution within hummocky landscape

2008 ◽  
Vol 88 (3) ◽  
pp. 349-363 ◽  
Author(s):  
J. Thibodeau ◽  
D S Chanasyk ◽  
L G Fuller
Keyword(s):  
Soil Moisture ◽  
Rural Communities ◽  
Agricultural Landscape ◽  
Agricultural Practices ◽  
Growing Season ◽  
Slope Position ◽  
Short Term ◽  
Leaching Potential ◽  
Potential Index ◽  
Soil Landscape

Groundwater quality is a major issue for rural communities, and intensive agricultural practices have the potential to contaminate groundwater via leaching. By analysing the movement of a bromide tracer over three slope positions (top, middle and low) within two hummocky landscapes in central Alberta, the intensity of short-term leaching potential was measured, and the accuracy of a leaching potential index was assessed. Concentrations of bromide > 1 mg kg-1 were found at a 120-cm depth at each slope position, from both landscapes, after one snowmelt event and one growing season. However, the depth of a bromide concentration > 100 mg kg-1 varied significantly among slope positions after the snowmelt event, and after the growing season. The leaching potential index successfully distinguished between high leaching potential, and low and very low leaching potential. This index will become a useful tool to determine the variability of leaching within an agricultural landscape. Key words: Soil-landscape, leaching, tracer, soil moisture, soil profile index

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