Most early research on rills was carried out for agricultural purposes and the most commonly-used definition still emphasizes agricultural applications - "microchannels ... small enough to be removed by normal tillage operations" (FAO 1965). This definition may explain the lack of attention paid to rill processes, for it implies relative insignificance in agriculture, but at the same time diverts attention from rill devlopment in areas which are not repeatedly disturbed by tillage, where more permanent rills can develop which may be of greater geomorphic importance.
Table of Contents
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R.B. Bryan
Processes and significance of rill development 1
G. Covers
Spatial and temporal variability in rill development processes at the
Huldenberg experimental site 17
J. Poesen
Transport of rock fragments by rill flow - a field study 35
O. Planchon, E. Fritsch & C. Valentin
Rill development in a wet Savannah environment 55
R.J. Loch & E.C. Thomas
Resistance to rill erosion: observations on the efficiency of rill
erosion on a tilled clay soil under simulated rain and run-on water 71
M.A. Fullen & A.H. Reed
Rill erosion on arable loamy sands
in the West Midlands of England 85
D. Torri, M. Sfalanga & G. Chisci
Threshold conditions for incipient rilling 97
G. Rauws
The initiation of rills on plane beds of non-cohesive sediments 107
D.C. Ford & J. Lundberg
A review of dissolutional rills in limestone and other soluble rocks 119
J. Gerits, A.C. Imeson, J.M. Verstraten & R.B. Bryan
Rill development and badland regolith properties 141
