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The Guelph model for evaluating the effects of Agricultural Management Systems on Erosion, Sedimentation and Phosphorus yields (GAMESP) has been used to evaluate potential reductions in downstream sediment and phosphorus loadings from agricultural land when best management practices are applied on problem areas of a small Ontario agricultural watershed. This paper introduces a brief overview of different means of controlling phosphorus nonpoint source pollution, and reveals that best management practices using a crop residue cover such as no-till and spring moldboard plowing can potentially reduce downstream phosphorus loadings, attributed to sheet and rill erosion during the hydrologically active spring period by as much as 83 and 74%, respectively, when compared to fall moldboard plowing without a crop residue cover.
evaluation of best management practices to control phosphorus nonpoint source pollution
Rousseau, A., Dickinson, W.T. and R.P. Rudra 1987. EVALUATION OF BEST MANAGEMENT PRACTICES TO CONTROL PHOSPHORUS NONPOINT SOURCE POLLUTION. Canadian Agricultural Engineering 29(2):163-168.
163 - 168