A guide to the checkbook scheduling method for irrigation, including required items and instructions needed for effective scheduling, and PDF worksheets.
- Excel spreadsheet version of the North Dakota–Minnesota checkbook method Version 2.1 (658 K XLSX) – North Dakota State University
- User's manual (2.1 MB PDF) – North Dakota State University
Soil moisture management strategies and monitoring techniques for optimizing crop production and minimizing ground water quality degradation.
Document developed by the Soil Conservation Service and U.S. Department of Agriculture, 1976, and presented as historical reference. Contains information on Minnesota soils, crop water use, and irrigation equipment and design. Defer to recent publications for current recommendations. (9.4 MB PDF)
Soil moisture monitoring
Figure 1. Soil moisture monitoring. This telemetry
unit incorporates a tipping bucket rain gauge in
addition to soil moisture sensors.
The University of Wisconsin Extension Service produced a new resource, Methods to Monitor Soil Moisture, that explains how to monitor soil moisture using several different types of sensors.
Much of the increased utility of soil moisture sensors in recent years has resulted from the advances in wireless telemetry that allow the soil's moisture data to be transmitted and hosted on computer or smart phone applications (Figures 1 and 2).
Soil moisture monitor sources
There are several telemetered soil moisture monitoring systems marketed in Minnesota by local dealers:
This video describes how to conduct and interpret a test to ensure that irrigation is uniform throughout the field. The worksheet below has instructions and spreadsheets for conducting this test for a central pivot using in–field catch cans.