Geographic Soils Information
Soil Spatial Variability in the Field
Central Wisconsin Farm
Techniques & Tools For Mapping Soils
35cm Active Soil Layer. Ice Wedge at 55cm.
(a) Hand-powered soil auger
(b) Truck-mounted hydraulic soil probe
(c) Air photo with soil boundary outline
(a) Regularly spaced grid pattern of sample locations is labor intensive.
(b) More efficient is apply knowledge where scientist expects soil properties to change.
Modern Technology For Soil Investigations
Map of a 7 ha field showing the apparent electrical
Remote Sensing Tools For Soils Investigations
Willamette valley of western Oregon
1973 Landsat satellite images showing a portion of an irrigation project in western Marja, Afghanistan.