Understanding inield soil moisture variability and associated impact on irrigation
Paz, Joel O.
Tagert, Mary Love M.
Date of Degree
Original embargo terms
Visible to MSU only for 1 year||forever||10000-01-01
Graduate Thesis - Open Access
Master of Science
College of Agriculture and Life Sciences
Department of Agricultural and Biological Engineering
Site-specific irrigation decisions require information about variations in soil moisture within the rooting depth actively being used by the crop. Producers have been using soil moisture sensors to make irrigation decisions, and it has been shown that soil moisture sensors can reduce water usage without reducing yields. There are still unanswered questions on improving efficiency with soil moisture sensors based on density and location of sensors within a field. This three-year study uses sensors to evaluate the spatio-temporal variability of soil moisture across an 18-ha production field in a corn/soybean rotation. The IDW results show that when uniform irrigation applications are made to the field, fewer sensors that are placed in better locations throughout the field can be as useful as a densely gridded array of sensors. Although, if variable rate irrigation (VRI) is being used, a dense array could be used the first season to fine tune management zones.
Mississippi Soybean Promotion Board and Southern SARE
Hodges, Blade, "Understanding inield soil moisture variability and associated impact on irrigation" (2020). Theses and Dissertations MSU. 4826.