The following information is a Web Extra from the pages of Farm Journal. It corresponds with the article "Calculated Precipitation." You can find the article in Farm Journal's 2013 March issue.
Interested in exploring what variable-rate irrigation might bring to your operation? Here's a look at what four major center-pivot manufacturers are offering:
Variable-rate irrigation is available with T-L Irrigation center pivot management control systems. This enables growers to manage the water application by controlling the speed of the system, says Clark Bauer, the company's U.S. sales manager. T-L Irrigation has partnered with AgSense and CropMetrics to provide these products and services.
Using variable-rate application allows farmers to provide multiple water prescriptions within a field using a single center pivot. Variable-rate technology captures information about factors such as the terrain and soil and turns it into useable data. Prescriptions developed with CropMetrics Precision Irrigation Management Services can be put into practice using T-L’s remote-management product Precision Link and the Precision Point III (PPC III) Control Panel.
A new, one-time CropMetrics VRI Rx App Lifetime License is part of T-L’s variable-rate application offerings.
Click here to visit the T-L Irrigation website for more information.
The following video from Lindsay Corporation explains how its Precision VRI system can help growers optimize their water use. Click here for more information on the Lindsay website.
Valley VRI features a combination of hardware and software allowing growers to adjust the desired amount of water in a sector (VRI Speed Control) or management zone (VRI Zone Control). Irrigation application can be programmed to match specific field conditions, including a variety of soil types and topography.
Cole Fredrick, VRI product manager for Valley Irrigation, says this technology is here to stay. Depending on how prescriptions are applied and the goal of the grower, he says, using this technology may increase total yields, optimizing the productivity of the management zones in the field. But Fredrick sees VRI helping growers not only maximize yields but also profitability.
Click here to watch a video demonstration of Valley Irrigation's VRI zone control system. Then click here to go to the Valley Irrigation website for more information.
Variable-rate irrigation technology also is available from Reinke Manufacturing. Click here to read more about the company's VRI system on AgWeb. Then click here to visit the Reinke website to learn more.