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Statewide Variety Testing

The UGA CAES Statewide Variety Testing program provides annual performance testing results on Georgia commodities including canola, small grains and forage, corn and silage, and field crops.

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UGA Weather Network

The UGA Weather Network collects reliable weather information for agricultural and environmental applications. Each station monitors air temperature, relative humidity, rainfall, solar radiation, wind speed and direction, soil temperature and moisture, and atmospheric pressure.

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Downloads 


ISAAC – Irrigation System Analysis and Computation

ISAAC is PC software designed to make a number of computations to determine the application uniformity of irrigation systems. Basically a number of observation measurements in the field are collected and entered to make the computation. The resulting report may be printed, saved as a universal RTF file, saved to HTML (for web use) or saved for future reference. The raw data may also be saved to reference at a later date.

This program is provided by the University of Georgia Cooperative Extension Service via Stripling Irrigation Research Park. For further information contact Calvin Perry, perrycd@uga.edu. It was developed by Kerry Harrison, retired UGA Extension Irrigation Specialist.

System Requirements: ISAAC is designed to work under Windows 95/98/2000 (but should work with newer versions of Windows in compatibilty mode) and should operate satisfactorily on any PC system that will run any of these operating systems. The installation will require up to 5 MB of disk space depending on the system configuration. Note – after clicking on the download button below, the “autorun.exe” file will be downloaded into your particular “downloads” folder. Usually a download reminder/info line will be displayed at/near the bottom of your browser window. The “autorun.exe” file should be copied into an appropriate folder and then the file can be double-clicked to start the install process, following prompts.

 

ISAAC download

 

UGA Extension Publications
Evaluating and Interpreting Application Uniformity of Center Pivot Irrigation Systems
(C 911)
With rising fuel prices it is increasingly important that irrigation systems apply water uniformly in order to achieve maximum benefit from the water applied. The uniformity of water application under a center pivot is determined by setting out cans or rain gauges along the length of the pivot, bringing the irrigation system up to proper operating pressure, and letting the system pass over them.
Factors to Consider in Selecting a Farm Irrigation System
(B 882)
The majority of agricultural irrigation systems in Georgia fit into one of two broad categories: sprinkler irrigation and micro-irrigation. Sprinkler irrigation systems include center pivot, linear move, traveling gun, permanent set and solid set. Micro-irrigation systems include drip (or trickle) irrigation and micro-sprinklers. No one system is best for every application. Once you decide to install an irrigation system, you must consider several important factors before deciding which system is best for your situation. This publication is intended primarily for the farmer who has made the decision to irrigate and is in the process of deciding what type system will best fit into his or her operation.
Irrigation Scheduling Methods
(B 974)
To schedule irrigation for most efficient use of water and to optimize production, it is desirable to frequently determine the soil water conditions throughout the root zone of the crop being grown. A number of methods for doing this have been developed and used with varying degrees of success. In comparison to investment in irrigation equipment, these scheduling methods are relatively inexpensive. When properly used and coupled with grower experience, a scheduling method can improve the irrigator’s chances of success.This publication covers the working principles of currently used methods for scheduling irrigation.
UGA EASY Pan Irrigation Scheduler
(B 1201)
The UGA EASY (Evaporation-based Accumulator for Sprinkler-enhanced Yield) Pan Irrigation Scheduler is designed to provide in-field monitoring of crop water needs in humid areas for a fraction of the management time and cost associated with other irrigation scheduling methods. If a farmer is not currently using a more sophisticated irrigation scheduling method, this unit is a simplified, low cost alternative. The UGA EASY Pan Irrigation Scheduler is designed to help you keep track of when your next application is needed, so you can avoid applying too much or too little water. The overall goal is to be more efficient in the use of irrigation water.
UGA EASY Pan Irrigation Scheduler: Pan Size Considerations
(B 1201-1)
The University of Georgia EASY Pan (Evaporation-based Accumulator for Sprinkler-enhanced Yield) was introduced in 2001 as a simple, cost-effective alternative for scheduling irrigations on sprinkler irrigated row crops in humid regions. Several users have questioned the need for the larger sized tub or pan. This publication presents results of a test with two smaller pans. The potential to use a smaller unit would allow a single individual to easily set up and maintain the EASY Pan and, at the same time, reduce the overall cost of materials in the construction process. The hypothesis of this particular test was that the two smaller pans would respond in a similar manner to the larger pans under evaporation and excess rainfall conditions.
Winterizing Your Irrigation System
(B 1439)
Irrigation systems are used by farmers and homeowners to supply supplemental water to their crops. At the end of the growing season, the irrigation system should be checked and winterized to maintain proper operation for the coming season. This publication provides a list of suggested things that should by done on both drip and center pivot systems to help protect them during the winter months.
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