Agriculture today is not what it was a decade ago. We are at an interesting pace of agricultural technological innovation and development in sensors, controls, robotics and technology, including irrigation scheduling applications. The declining quantity and quality of freshwater resources in many parts of the world, including the United States, imposes significant challenges for producers, managers, advisors and decision-makers to produce more yield with less water. It is necessary to promote sound management strategies to improve irrigation efficiency and conserve water resources. By using irrigation scheduling applications, producers can make more informed decisions that can lead to higher yields with fewer irrigation inputs.
Nebraska is one of the top states that produces maize under different irrigation methods, in third place after Iowa and Illinois. The total irrigated area in Nebraska reaches about 9.3 million acres. More than 85% of the total irrigation areas use the center pivot irrigation system, while about 15% is covered by furrow irrigation and less than 1% is managed by subsurface drip irrigation systems (see fig. 1).
A new irrigation scheduling application is being developed to improve irrigation scheduling that can have a substantial impact in using limited water supplies more effectively and increase yield per unit applied of irrigation water and sustain agricultural productivity. At the request of Irriga Global, Lutry, Switzerland, a field test was initiated for the 2022 growing season on maize fields to evaluate the irrigation scheduling application in one of the Irrigation Today.
A recent article by Dr. Steve Evett and others traces the history of irrigation in the Great Plains region from a geographical, technical, and political perspective as well as how it has impacted the water resources
Derek M. Heeren1, Associate Professor and Water for Food Global Institute Faculty Fellow
Steven R. Melvin2, Extension Educator
Aaron Nygren3, Associate Extension Educator
Eric Wilkening1, Undergraduate Research Assistant
1 Department of Biological Systems Engineering, University of Nebraska-Lincoln
Please welcome Jeremy Milander to Nebraska Extension. Jeremy will assume his new role as an Assistant Extension Educator in mid-April and will have specific responsibilities in the Bazile Water Management Area in northeast Nebraska. He will work with four Natural Resources Districts to develop an educational program aimed at stabilizing the nitrate concentration in ground water. Jeremy will also work with a stakeholder group to implement field demonstrations funded by a Nebraska Environmental Trust grant.
Soil health management refers to the preservation and improvement in soil physical, chemical, and biological properties to maximize the productive capacity of soil. Cover crops and reduced tillage are promoted for improving soil health; however, soil amendments such as application of livestock manure and municipal biosolids have received less attention as a soil health improvement practice. A literature review, funded by the North Central Region Water Network and the Soil Health Institute, was conducted to summarize and discuss results of studies reporting chemical, physical, and biological soil properties from application of livestock manure, animal by-products (i.e. compost), and municipal biosolids and to identify further research needs.
In recent years irrigators have begun to install variable frequency drives (VFDs) to monitor and control the speed of their irrigation pumps powered by electricity. This has led to several recent questions:
A value-added market for woody biomass (wood chips) generated during management of Eastern Red Cedar and native trees in riparian forests and rangeland is critical to offset the cost to landowners of managing forested areas for fire prevention, invasive plant species control, improving wildlife habitat and ecological preservation. Utilization of wood chips alone and co-mingled with livestock manure or nitrogen fertilizer is being investigated (since 2015) as a land treatment practice on local landowner crop fields with research focused on evaluating impacts on soil moisture holding capacity, temperature, biology, & other properties that impact crop productivity.
