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Infiltration as Influenced by Tillage‐Induced Random Roughness and Pore Space
Author(s) -
Burwell R. E.,
Larson W. E.
Publication year - 1969
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/sssaj1969.03615995003300030032x
Subject(s) - loam , surface runoff , tillage , infiltration (hvac) , environmental science , characterisation of pore space in soil , hydrology (agriculture) , surface roughness , soil science , surface finish , soil water , porosity , geology , geotechnical engineering , agronomy , materials science , composite material , biology , ecology
During simulated rainfall, increases in tillage‐induced random roughness and pore space increased water infiltration before runoff started but did not significantly influence infiltration throughout a 5‐cm runoff period. Random roughness provided a greater accounting of infiltration variation among tillage treatments to initial runoff than did total pore volume of the tilled layer. Freshly turnplowed alfalfa‐bromegrass sod on Barnes loam and Nicollet sandy clay loam soil provided random roughness and pore space conditions that could accommodate without “failure” the major portion of rainfall energy (as evidenced by EI) expected in west central and southwestern Minnesota during the first 2 months following row crop planting. This is the critical runoff‐erosion period in the Corn Belt.