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RFID Helps California Crops Grow
Ceàgo Vinegarden is using passive tags and active sensors to improve the quality of its grapes, reduce environmental impacts and increase efficiencies.
Jan 04, 2007—A California farm is using passive RFID tags, active wireless sensors and geographic information systems (GIS) to improve the quality of its grapes, as well as to reduce the crop's environmental impact on the surrounding countryside and make its operations more efficient.
Ceàgo Vinegarden, situated in Lake County, Calif.—about two hours north of San Francisco—is an organic and biodynamic farm owned by Jim Fetzer, one of 11 siblings of the Fetzer family that owned the well-known Fetzer Winery until 1992. Biodynamics is a farming method designed to promote biodiversity by raising a number of different crops and animals. At Ceàgo Vinegarden, for example, fruit and nut trees grow alongside herbs and perennial plants to attract beneficial insects, and a herd of sheep graze on seasonal vineyard cover crops and grasses.
In addition to the naturalistic practices, however, is a host of high-tech methods, including handheld RFID readers equipped with GPS functionality linked to Google Earth (a satellite imaging application); wireless battery-powered sensor pods that measure air temperature, humidity, solar radiation, soil moisture and temperature; and a variety of software applications that help perform a number of functions, such as calculating the grapes' ripeness.
Fetzer is working with Geovine, a California consulting firm specializing in geographic information systems and technologies related to winegrowing and natural resource management, and engineering and construction firm CH2M Hill, located in Denver.
To date, approximately 500 passive RFID tags have been affixed to posts at the ends of the vine rows, says Josh Metz, president of Geovine. Metz is also an employee of Ceàgo Vinegarden, working in business development, marketing and sales at the vineyard. As workers document various processes, such as checking the grapes' progress, they use handheld readers to interrogate the tags to identify the row.
"Traditionally, they would go down the row, grab bunches of grapes from different parts of the rows and then check them for sugars and acids," says Metz. By interrogating each row's tag, workers can electronically record that samples were taken and identify the row from which each bunch came.
"We can also document if a row was pruned, and then link that with the person who did the pruning, and how long it took," he says.
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