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Runoff and Soil Loss as Influenced by Tillage and Residue Cover
Author(s) -
Stein O. R.,
Neibling W. H.,
Logan T. J.,
Moldenhauer W. C.
Publication year - 1986
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1986.03615995005000060029x
Subject(s) - residue (chemistry) , tillage , plough , surface runoff , environmental science , soil science , crop residue , soil loss , limiting , ridge , soil cover , hydrology (agriculture) , soil conservation , geology , agronomy , soil water , geotechnical engineering , agriculture , chemistry , biology , ecology , engineering , paleontology , biochemistry , mechanical engineering
To gain a better understanding of the interactions between soil detachment, transport capacity, and residue cover, the USDA programmable rainfall simulator was used to erode plots created on established and newly created ridge‐till areas of <1% slope with and without residue cover. A control of conventional moldboard plow‐spring disk was also included. Results showed that for all treatments, ridge sideslope erosion was three to four times greater than total soil loss, suggesting that transport capacity was the limiting factor. For most runs no significant difference in soil loss was measured between ridges of different ages. The presence of residue decreased soil loss to one‐sixth or one‐seventh on older ridges and to one‐half on new ridges. Location of residue was more important than the total amount of residue. Residue placed only on the furrow bottom was as effective in reducing soil loss as residue placed over the entire ridge and furrow, while residue placed only on the ridge side‐slope did not reduce soil loss significantly from treatments without residue.