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Focus on
Cotton




A Smartphone App for
Scheduling Irrigation in Cotton


June 2018



By George Vellidis, Ph.D.
Professor
Crop and Soil Sciences Department
University of Georgia
Tifton, GA
Phone: 229-386-3442
Email: yiorgos@uga.edu

 

Executive Summary
(11 min 31 sec)
 

Full Presentation
(30 min 07 sec)
 

 

for PC, Mac, and Articulate Mobile Player App (10.1 MB)

 

Video for Android (30.2 MB)

Video for iPhone (40.4 MB)

for PC, Mac, and Articulate Mobile Player App (28.2 MB)

 

Video for Android (81.1 MB)

Video for iPhone (109 MB)

 
 

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Note: For the best viewing experience on your PC, please use Google Chrome. For the best iPad viewing experience, you will be prompted to download the free Articulate Mobile Player app.


Summary: The Smartphone App for Scheduling Irrigation in Cotton uses weather data to estimate daily crop water use. It maintains a daily soil water balance by subtracting daily crop water use from available soil moisture and adding rain or irrigation. The App estimates the amount of rain received at registered fields from national weather data sets, but performs the best when users update the rain data using information from a local rain gage. The App has been evaluated against a variety of other irrigation scheduling methods and has performed well. It consistently results in yield gains and significant improvements in irrigation water use efficiency when compared to traditional scheduling methods.




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