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Laboratory measurement and modelling the effects of mulching and furrowing on post-harvest soil water erosion on potato land
Authors: J.C. Leyte. Linnell Edwards and l.R. Bunley
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Download file: https://library.csbe-scgab.ca/docs/journal/39/39_1_1_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 39 (1997)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/39/39_1_1_raw.pdf
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Description: A laboratory experiment was run on a short length of reconstructed post-harvest potato furrow to facilitate evaluation of runoff and soil erosion parameters for modelling 'cool season' soil loss from potato lands. The experiment comprised the use of a cold-room facility to evaluate the separate and integrated effects of furrow side (interrill) and furrow bottom (rill) erosion on a 3.15 m long section of furrow subjected to prior freeze-thaw cycling. A factorial arrangement was run with four replications of three treatments comprising bare and straw-mulched surfaces at slopes of 3, 5, and 7%, under sequential 20 min simulated rainfall applications of 47 and 94 mmlh. Sediment flux was separately measured on two sections of furrow side and on the furrow bottom during each rainfall application. Flow velocity was measured in the furrow bottom using the dye method. The straw-mulch cover factor for furrow side erosion was 0.21 for the lower intensity rainfall and 0.44 for the higher intensity. However. the greatest effect of the straw mulch was in diminishing rill erosion in the furrow bottom. An example is presented illustrating the use of parameters calibrated from this and previous experiments to facilitate modelling of soil loss from furrows of practical field length using the COSSEM simulation model. Keywords: soil water erosion, simulated rainfall, hill-and-furrow, freeze-thaw, slope, straw-mulch, COSSEM model.
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Citation: J.C. Leyte. Linnell Edwards and l.R. Bunley 1997. LABORATORY MEASUREMENT AND MODELLING THE EFFECTS OF MULCHING AND FURROWING ON POST?HARVEST SOIL WATER EROSION ON POTATO LAND. Canadian Agricultural Engineering 39(1):1-7.
Volume: 39
Issue: 1
Pages -
Contributor:
Date: 1997
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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: A laboratory experiment was run on a short length of reconstructed post-harvest potato furrow to facilitate evaluation of runoff and soil erosion parameters for modelling 'cool season' soil loss from potato lands. The experiment comprised the use of a cold-room facility to evaluate the separate and integrated effects of furrow side (interrill) and furrow bottom (rill) erosion on a 3.15 m long section of furrow subjected to prior freeze-thaw cycling. A factorial arrangement was run with four replications of three treatments comprising bare and straw-mulched surfaces at slopes of 3, 5, and 7%, under sequential 20 min simulated rainfall applications of 47 and 94 mmlh. Sediment flux was separately measured on two sections of furrow side and on the furrow bottom during each rainfall application. Flow velocity was measured in the furrow bottom using the dye method. The straw-mulch cover factor for furrow side erosion was 0.21 for the lower intensity rainfall and 0.44 for the higher intensity. However. the greatest effect of the straw mulch was in diminishing rill erosion in the furrow bottom. An example is presented illustrating the use of parameters calibrated from this and previous experiments to facilitate modelling of soil loss from furrows of practical field length using the COSSEM simulation model. Keywords: soil water erosion, simulated rainfall, hill-and-furrow, freeze-thaw, slope, straw-mulch, COSSEM model.
Keywords:
Résumé:
Mots-clés:
Citation: J.C. Leyte. Linnell Edwards and l.R. Bunley 1997. LABORATORY MEASUREMENT AND MODELLING THE EFFECTS OF MULCHING AND FURROWING ON POST?HARVEST SOIL WATER EROSION ON POTATO LAND. Canadian Agricultural Engineering 39(1):1-7.
Volume: 39
Issue: 1
Pages -
Contributor:
Date: 1997
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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