If you would like to participate in a dynamic irrigation program, called the Nebraska Ag Water Management Network, let me know and I’d be happy to help and get you started! If you are in the NAWMN, consider installing your ETgage soon and once done with planting, 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: https://nawmn.unl.edu/.
I plan to report the weekly evapotranspiration (ET) in my weekly blog. The ETgage I check is in the center of the county, just south of Geneva; hopefully it will help others become aware or have an idea what the local ET is.
The ETgage I check outside of Geneva changed 2.0 inches for the week of May 25-June 1st. Corn in the V-4 stage has a coefficient of .18”. To calculate how much water, corn at V-4 stage used you simply multiply .18” x 2.0” for a weekly use of .36” or .05 inches/day. Corn approaching V-6 would have used .70”/week or .07” per day. Fortunately, we received about 1.2” rain in this location as well.
For more information about ETgages and Watermark sensors, check out the NAWMN website https://nawmn.unl.edu/.