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Robots aim to revolutionize farming in US



Published: Mon, July 15, 2013 @ 12:00 a.m.

Associated Press

SALINAS, Calif.

On a windy morning in California’s Salinas Valley, a tractor pulled a wheeled, metal contraption over rows of budding iceberg-lettuce plants. Engineers from Silicon Valley tinkered with the software on a laptop to ensure the machine was eliminating the right leafy buds.

The engineers were testing the Lettuce Bot, a machine that can “thin” a field of lettuce in the time it takes about 20 workers to do the job by hand.

The thinner is part of a new generation of machines that target the last frontier of agricultural mechanization — fruits and vegetables destined for the fresh market, not processing, which have thus far resisted mechanization because they’re sensitive to bruising.

Researchers are designing robots for these most- delicate crops by integrating advanced sensors, powerful computing, electronics, computer vision, robotic hardware and algorithms, as well as networking and high precision GPS localization technologies. Most ag robots won’t be commercially available for at least a few years.

In this region known as America’s Salad Bowl, where for a century, fruits and vegetables have been planted, thinned and harvested by an army of migrant workers, the machines could prove revolutionary.

Farmers say farm robots could provide relief from recent labor shortages, lessen the unknowns of immigration reform, even reduce costs, increase quality and yield a more- consistent product.

Many sectors in U.S. agriculture have relied on machines for decades, but nationwide, the vast majority of fresh-market fruit still is harvested by hand.


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