Effect of Sprinkler Type and Tillage Practice on a Soil Infiltration Parameter Under a Moving Sprinkler Irrigation Machine
Thesis - Open Access
Master of Science (MS)
Department / School
Darrell W. DeBoer
A modified Green-Ampt infiltration model was used to determine soil hydraulic conductivity values from surface runoff and sprinkler application data sets. Comparison of three sprinklers and two secondary tillage practices over three irrigation seasons were made to identify the effect of these factors on hydraulic conductivity. Hydraulic conductivity values were different for the low, medium and high-pressure sprinklers used in the study with the hydraulic conductivity values varying inversely with the pressure. Hydraulic conductivities also varied among the years of the study. A ripping (subsoiling) secondary tillage practice increased hydraulic conductivity by the 66 percent when compared with a control practice. Hydraulic conductivities generally decreased during the irrigation season. A calibrated infiltration model was used to predict the surface runoff values for irrigation application depths not used in the data sets.
Library of Congress Subject Headings
Irrigation -- Research
Number of Pages
South Dakota State University
No Copyright - United State
Moshref-Javadi, Asghar, "Effect of Sprinkler Type and Tillage Practice on a Soil Infiltration Parameter Under a Moving Sprinkler Irrigation Machine" (1986). Electronic Theses and Dissertations. 4412.