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United States Department of Agriculture

Agricultural Research Service

Title: Updating the Arkansas Irrigation Scheduler

Authors
item Vories, Earl
item Tacker, Phil - UNIV OF AR COOP EXT SERV
item Hall, Steve - UNIV OF AR COOP EXT SERV

Submitted to: Irrigation Associations Exposition and Technical Conference Proceedings
Publication Type: Proceedings
Publication Acceptance Date: September 6, 2005
Publication Date: November 6, 2005
Citation: Vories, E.D., Tacker, P., Hall, S. 2005. Updating the arkansas irrigation scheduler. Irrigation Associations Exposition and Technical Conference, Falls Churc, VA. P. 372-379.

Interpretive Summary: Many producers use computer programs to aid in knowing the appropriate times to irrigate their crops. One such program, the Arkansas Irrigation Scheduler, has been in use for over twenty years and is currently used in Arkansas and surrounding states. The current version was released in 2000 and a new release is planned for 2006. Drip irrigation scheduling will be added. Users will be able to view information on more of their fields at one time and group the fields however they feel most suitable. Using the program to properly schedule irrigation can save energy and therefore money by reducing unnecessary pumping, and help to alleviate water shortages being experienced in many agricultural areas.

Technical Abstract: The complexity of scheduling irrigation can be greatly reduced by the use of publicly available computer programs. However, irrigation scheduling is more complicated in humid regions than arid locations, due to factors such as cloudy weather, rainfall, and temperature swings caused by the movement of weather fronts. Weather conditions vary greatly in humid regions from year to year, and even within a year, and the variability must be accounted for in the scheduling program. The Arkansas Irrigation Scheduler has been in use for over twenty years and is currently used in Arkansas and surrounding states. The current version was released in 2000 and a new release is planned for 2006. The new version will maintain the objectives of the earlier releases, except that it will be field-, rather than system-based. The change allows the users to view information on more of their fields at one time and group the fields however they feel most suitable. Drip irrigation scheduling will be added for both surface and subsurface systems. While new crop coefficient functions will not be included initially, they can be added as appropriate. Using the program to properly schedule irrigation can save energy and therefore money by reducing unnecessary pumping, and help to alleviate water shortages being experienced in many agricultural areas.

Last Modified: 4/21/2014
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