CGRG Bibliography of Canadian Geomorphology
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Author : Beke, G.J.; Lindwall, C.W.; Entz, T.; and Channappa, T.C.
Date : 1989
Title : Sediment and runoff water characteristics as influenced by cropping and tillage practices
Publication : Canadian Journal of Soil Science
Issue : 69(3):
Page(s) : 639-647
Abstract
Rainfall simulation by sprinkler irrigation was used to evaluate the characteristics of sediment and runoff water from erosion plots on a Dark Brown Chernozemic soil near Lethbridge, Alberta. Replicated land treatments consisted of bare fallow, perennial alfalfa/wheat grass forage planted in rows parallel to the slope, barley planted in rows parallel to the slope (barley-S), and barley on contour (Barley-C).The eroded sediment from all treatments was generally enriched in organic matter (OM), NH4-N, total N (TN), and PO4-P, but not in NO3-N or total P (TP). The sediment from the bare fallow treatment was enriched in silt-size particles and had the highest OM enrichment. Maximum NH4-N and TN enrichment occurred in the sediment from the barley-S treatment, and maximum PO4-P in that from the forage treatment. This selective removal of plant nutrient was attributed mainly to erosion processes and to cropping-induced differences in C:N:P ratios of organic complexes. The runoff water from all treatments was enriched in NO3-N, TN, and PO4-P. For the cropping treatments in this experiment, nutrient enrichment of the runoff water decreased from forage to barley-S to barley-C treatment. In general, more NO3-N was lost in the runoff water than in the sediment
Bibliography of Canadian Geomorphology