Page Banner

United States Department of Agriculture

Agricultural Research Service

Automation Can Save Irrigation Water and Keep Groundwater Clean / January 23, 1998 / News from the USDA Agricultural Research Service

Agricultural Research Service
U.S. Department of Agriculture
ARS News and Information Search News and Info Science for Kids Image Gallery Agricultural Research Magazine Publications and Newsletters News Archive News and Info home ARS News and Information
Latest news | Subscribe
 

Automation Can Save Irrigation Water and Keep Groundwater Clean

By Don Comis
January 23, 1998

For the past four summers, cotton plants on a test site in Lubbock, Tex., have had all their water needs met by computer, with no waste of water or fertilizers and other dissolved chemicals.

The computer decides whether to turn on irrigation pumps based on readings from soil probes, combined with weather updates every half hour plus information from a computer model on crop water use. The prototype, still in the research stage, is believed to be the only such totally automated irrigation management system in the country.

Steven R. Evett, a soil physicist with the Agricultural Research Service in Bushland, Tex., designed a key component of the system: the electronic probes that give the computer soil moisture readings on the half hour. He also wrote the computer program that drives the soil moisture readings.

A Texas A&M University team in Lubbock, led by soil physicist Robert J. Lascano, wrote programs that combine water content and weather data and automatically make irrigation decisions.

Dynamax, Inc., a Houston firm that sells and manufactures scientific instruments, sells the probes. Working with the company and Evett, Lascano has demonstrated the workability of joining the probes with a field weather station and the computer model of crop water use he designed. Evett adapted the model for personal computers and continues to update it. The model can be downloaded from the World Wide Web at:

http://www.cprl.ars.usda.gov/programs/

An article on the system appears in the January issue of ARS' Agricultural Research magazine. The article also is on the World Wide Web at:

http://www.ars.usda.gov/is/AR/archive/jan98/prob0198.htm

Scientific contact: Steven R. Evett, USDA-ARS Conservation and Production Research Laboratory, P.O. Drawer 10, Bushland, Texas, phone (806) 356-5775, fax 356-5775, srevett@ag.gov.

Top | News Staff | Photo Staff

E-mail the web team Privacy and other policies Site map About ARS Information Staff Bottom menu

Home | News | Pubs | Magazine | Photos | Sci4Kids | Search
About ARS Info | Site map | Policies | E-mail us

Last Modified: 1/3/2002
Footer Content Back to Top of Page