1. Irrigation Scheduling Smart Phone App Gene Stevens, Professor-Cropping Systems MU-Fisher Delta Research Center Program is a Multi-Discipline Team Effort

2. Evapotranspiration (ET) Total of two processes –Evaporation is water lost from soil surface –Transpiration is water lost from plant short grass alfalfa ETo ETr Reference Crops

3. ETo at Portageville station January December Daily ETo, inches Based on Penman-Monteith Equation

4. Check with NRCS

5. University of Georgia

6. 237 GA cotton fields with 71 users 2013 1150 lb lint/acre by checkbook vs 1259 lb lint/acre by App 12.2 inches by checkbook vs 3.0 inches by app (75% less) 2014 1596 lb lint/acre by checkbook vs 1573 lb lint/acre by App 16.8 inches by checkbook vs 10.1 inches by app (40% less) Source: Dr. George Vellidis

7. Electronic Weather Station Network University of Missouri Mesonet

8. http://agebb.missouri.edu/weather/realtime/portageville.asp

9. modified atmometer- ETgage In Missouri, five automatic ET gages will be installed and monitored near existing electronic weather stations.

10. Linking Information Together Standardized Penman- Monteith Equation Crop Coefficient based on Degree Days Calculated Daily Crop Water Use Growth stage

11. Calibration in 2014 Corn Soybean Cotton Pivot Rice

13. Reading and logging rainfall by field

14. Step 1. Crop Water Use Generation 1- MU Phone App

15. Source: Ohio Agronomy Bull. 472-05 Sand Loamy Sandy Fine Loam Silt Silty Clay Silty Clay sand loam sandy loam clay loam clay loam Available Water Holding Capacity 0.35 0.30 0.25 0.20 0.15 0.10 0.05 Volumetric Soil Water Inch H 2 O/Inch Soil Field Capacity Permanent Wilting Point Allowable Depletion

16. Riding Our Bike While We Building It Pre-Testing New Parts Before Installation

17. Clarkton MO Cotton- Loamy Sand 2013 2014 Lint per acre Source: Andrea Jones and Zach Straatmann

21. Requires Field Information

22. *, **, ***, XXX are 70%, 80%, 90%,>100% of MAD (Management Allowed Depletion)

25. Documentation

26. Gene Stevens, John Travlos, Stephen Martin, Zach Straatmann, Earl Vories, Andrea Jones, Joe Henggeler,, Pat Guinan, Ray Massey, A.J. Foster, Van Ayers, Steve Hefner, and John Hester TEAM EFFORT