ag water management – Views from VanDeWalle

Irrigation Lessons for Youth

June 7, 2019 Brandy VanDeWalle

With my agricultural education degree, I enjoy creating lessons and activities for youth and often able to utilize that background by creating lessons for others. With Nebraska Extension as a leader in irrigation management and development of the Nebraska Agricultural Water Management Network, it is only fitting for Nebraska Extension to provide youth education related to irrigation.

With that in mind, a series of lessons have been created to accompany the recently developed Agricultural Water Management Guide. This online magazine-type resource introduces readers to irrigation and its use and benefits to Nebraska crop production. This guide serves as a resource for anyone wanting to learn more about irrigation management. It has embedded videos and links for further information, making it interactive. Teachers or informal educators can utilize the guide as an informative reference for themselves or encourage youth to read it themselves.

To compliment the Agricultural Water Management Guide, six lesson plans with activities have been created. Each lesson has learning objectives, careers associated with the topic, educational standards and hands-on activities related to irrigation. A basic ag water management lesson helps youth understand basics principles of soil and water management. Other lesson plan topics include: irrigation management planning & tools used, center pivot irrigation, furrow irrigation, subsurface drip irrigation, and variable rate irrigation. Extension has also developed YouTube videos to compliment these lessons in the classroom.

These materials can all be found on Nebraska Extension’s CropWatch website at cropwatch.unl.edu/youth and click on the irrigation lessons tab.

Crops, Irrigation

NE Ag Water Management Network

June 16, 2017 Brandy VanDeWalle

Agricultural irrigation system watering corn field in summer

If you have irrigated ground and are looking for ways to save money, reduce nutrient loss and use less water, consider joining the Nebraska Agricultural Water Management Network, or NAWMN. Evaluation results have shown a one to two-inch savings of irrigation since it’s inception. The Network has been having significant impacts on both water and energy conservation due to farmers adopting information and implementing technologies in their irrigation management. The cost of applying an additional 2 inches of water is going to vary depending on your depth to water, system pressure, and equipment costs, but could easily run from $10 to $30 per acre.

irrigatepump

To determine the actual cost, I recommend using the IrrigateCost app, developed by Nebraska Extension. The app, which is available for both Apple and Android products, allows users to input their specific information such as acres irrigated, pumping lift, system PSI, pump and pivot life, and inches applied as well as related costs such as for the well and engine, labor, energy, district fees, and taxes. The app then calculates total irrigation, total ownership, and total operating costs. It also breaks down costs by irrigation well, pump, gear head, pump base, diesel engine and tank and system and calculates per acre annual cost and per acre-inch annual cost.

A couple of the tools the NAWMN uses are ETgages® or Atmometers which mimic crop evapotranspiration or ET and Watermark soil matrix sensors which measure soil matric potential or the energy required to remove water from the soil. These two tools have really worked well and have made irrigation management much easier than those gut feelings. The more information you have the better decisions you can make!

If you are in the NAWMN, and have not already installed your equipment, be sure to remember to start the soaking/drying cycle on your Watermark sensors to be sure they work! It’s also important to replace the #54 alfalfa canvas covers and wafers on a regular basis at the start of each season. For more information, go to: http://water.unl.edu/web/cropswater/nawmdn.

Once you have your ETgage out, I hope you will post your weekly readings to the Nebraska Ag Water Management Network (NAWMN) website. As a reminder, once you are on the main screen, you can login to your site by entering your site name and password and clicking on “Login.” Once you have logged in, you will be taken to your weekly data from past weeks, including last year. To enter your weekly data, click on the “Add new ETgage reading” link which will take you to the data entry page where you can enter your growth stage, rainfall, and ETgage change.

If you’ve forgotten your site name or password, please contact Aaron Nygren at anygren2@unl.edu or 402-352-3821.

Source: UNL CropWatchwebsite