Agricultural Irrigation

Image shared from unwater.org Annually on this day, we bring special attention to the importance of groundwater & freshwater around the world. This year's theme focuses on "Groundwater: Making the invisible visible" to bring attention to this hidden water resource, that all too often goes unrecognized when sustainable policies are developed.

The Testing Ag Performance Solutions (TAPS) program is excited to offer a new six-part series focused on water, nitrogen and “Effective Conservation Technologies and Management Practices for Corn Production,” as the practicum is titled.

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

Scheduling the last few irrigations of the season deserves more of your management time than earlier irrigations because one must not only focus on keeping the crop wet enough to produce optimal yields, but also on using up enough of the stored soil water to lower the level to 40% of plant available water in the top four feet. This level will give about 2.4 inches of water storage room in sandy soils and about 5.5 inches in silt loam soils. Unfortunately, many irrigators leave the soil fairly wet with little to no storage room according to a recent study.

Irrigation is in full swing for the North Platte Valley in the Panhandle of Nebraska.  Water deliveries by the four major irrigation districts (Pathfinder, Gering-Fort Laramie, Goshen and Farmers) are expected to be near normal. The districts hope to deliver water to growers through the first week in September. Link to full article

Water Law 101: Part 6

Fertilizer-N is a big investment for crop production in Nebraska and elsewhere. After harvest, growers tend to plan their fertilizer-N management for the next year’s crop. But the question is how much nitrogen can they apply to get the most profit from their fertilizer-N investment?

What a year 2020 has been. After a year of record flooding over much of the state, we are now in various stages of drought. With limited rainfall over most of the state this year and fairly extended hot, dry periods, many irrigators may be wondering when is the irrigation season going to end?  With the price of grain, it is also worth considering do I need to apply that last inch or two of water to get that last bushel or two?

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

Groundwater levels across much of Nebraska continue to rebound from the historic 2012 drought, according to the 2019 Groundwater-Level Monitoring Report. On average, wells measured in spring 2019 saw a 2.63-foot increase in groundwater levels statewide.

Center pivot irrigation systems have several potential hazards, so personal safety is a priority!

Center pivots operation below or above the designed water pressure can create uniformity issues across the field and/or increase operating expenses.

Nebraska Extension, the Ogallala Water Project and the Nebraska Water Balance Alliance will host a water and crops field day on Aug. 23 at the West Central Research and Extension Center, 402 W. State Farm Road, North Platte.

Do you know how much water your crop is using on a daily basis?  When I ask this question most guys tell me somewhere between 0.20 - 0.40 inches per day.  Sometimes they are close but wouldn’t it be nice to know for sure?  It is rather simple to figure out if you have the right tools.  An atmometer, such as the ETgage®, is what you need to calculate reference ET.  ET stands for evapotranspiration.  This is the amount of water evaporated from the soil and plant surface and transpired through the plant.

Because of a growing concern about manure irrigation, the University of Wisconsin Extension assembled a workgroup to research the concerns. The workgroup included scientists, public health specialists, state agency experts, farmers, conservationists and others. Over the course of two years, the group gathered and studied the science of manure irrigation, which culminated in a report that contains findings, responses and recommendations. This article will review a few of their findings related to bacterial transport as well as highlight some of the reasons why a farmer might opt to apply manure via irrigation rather than other ways.

The UNL CropWater App. A handy tool for irrigators to use in the field to aid in irrigation scheduling.