Irrigation Engineering
IRRIGATION OPERATIONS & MANAGEMENT
Application of Liquid Animal Manures Using Center Pivot Irrigation Systems, EC778
Animal manure management practices are being scrutinized to ensure that the potential for environmental pollution is minimized. Manure from large and small production facilities must be distributed in a manner that limits the potential for surface runoff, deep percolation and drift to off-target areas.
Application Uniformity of In-Canopy Sprinklers, G1712
Use of in-canopy sprinklers can reduce application uniformity and increase runoff. Learn how to evaluate the efficiency of in-canopy sprinklers.
Converting Center Pivot Sprinkler Packages: System Considerations, G1124
Describes system-oriented factors that should be considered when changing sprinkler packages on a center pivot irrigation system.
Firming Irrigation Furrows to Improve Irrigation Performance, G1720
This NebGuide describes how a using a furrow firming wheel improves furrow irrigation performance.
Fundamentals of Surge Irrigation, G1870
Fundamental background for surge irrigation and how it can improve water management is provided in this NebGuide.
Irrigation Management and Crop Characteristics of Alfalfa, G1778
Alfalfa is relatively drought-tolerant, but irrigation makes it possible to grow high-quality alfalfa in Nebraska.
Irrigation Scheduling: Checkbook Method, EC709
Learn how to schedule irrigation based on a checkbook method of water deposits and/or withdrawals.
Management Recommendations for Blocked-end Furrow Irrigation, G1721
Proper blocked-end furrow irrigation management practices can minimize water application, irrigation costs and the leaching of agrichemicals below the root zone.
Managing Furrow Irrigation Systems, G1338
Proper furrow irrigation practices can minimize water application, irrigation costs and chemical leaching and result in higher crop yields.
Nebraska Surge Irrigation Trials, G1867
Learn the results of university research on surge irrigation over a six-year period.
Operating Characteristics of Center Pivot Sprinklers, G1532
The operating characteristics that can affect the suitability of a sprinkler package for a given field site.
Plant Growth and Yield as Affected by Wet Soil Conditions Due to Flooding or Over-Irrigation, G1904
Wet soil conditions caused by flooding or over-irrigation can damage crops, reduce yields and contribute to groundwater contamination. Adopting proper irrigation management strategies can limit the negative impacts.
Predicting the Last Irrigation of the Season, G1871
This NebGuide presents criteria and "rules of thumb" for predicting the last irrigation of the season for corn, grain sorghum, soybeans, and dry beans.
Surge Irrigation Field Layouts, G1869
Learn more information on installation of surge irrigation systems with this NebGuide.
Surge Irrigation Management, G1868
Learn how surge irrigation can reduce infiltration and gross water application resulting in improved water mangement.
Using Modified Atmometers (ETgage) for Irrigation Management, G1579
This NebGuide describes the atmometer (evapotranspiration gage) and explains how it can be used for irrigation scheduling. Examples are provided to show how information collected with an atmometer can be used to estimate crop water use for corn and soybean.
Using Polyacrylamide to Reduce Soil Erosion, G1866
Learn about polyacrylamide, how it can reduce soil erosion due to irrigation and what water management issues must be considered.
Using Ultrasonic Flow Meters in Irrigation Applications, G1426
This NebGuide reports on recent research to help ultrasonic flow meter users adjust inaccurate measurements, using multiple illustrations.
Water Loss from Above-Canopy and In-Canopy Sprinklers, G1328
In-Canopy and above-canopy sprinklers are compared to determine which irrigation method minimizes water loss and reduces installation and operation costs.
Watermark Granular Matrix Sensor to Measure Soil Matric Potential for Irrigation Management, EC783
This publication defines soil matric potential and describes principles and operational characteristics of one of the electrical resistance type soil moisture sensors for irrigation management. Examples show how soil matric potential can be used for irrigation management.
IRRIGATION SYSTEMS & DEVELOPMENT
Advantages and Disadvantages of Subsurface Drip Irrigation , EC776
Discusses subsurface drip irrigation, including the advantages of water application efficiency and savings, energy savings and potential yield increases and the disadvantges of initial investment, system capacity, design restrictions and emitter clogging.
Drip Irrigation Design and Management Considerations for Windbreaks, G1739
This publication discusses drip irrigation, one of the most commonly used methods to irrigate windbreaks.
Flow Control Devices for Center Pivot Irrigation Systems, G888
Factors contributing to the need for spinkler flow rate regulators and how various regulators work.
Minimum Center Pivot Design Capacities in Nebraska, G1851
Factors to consider in choosing an appropriate center pivot design are covered here.
