Yet, companies like Bosh Precision Agriculture LLC, of Newport News, Va.

WSJ: Farmers Experiment With Drones

By 2050, there will be an estimated nine billion people on the planet, and farmers will need to produce larger yields, said Young Kim, general manager of Bosh Precision Agriculture.

WSJ: Farmers Experiment With Drones

Precision agriculture is saving farmers across the country millions of dollars annually and dramatically reducing the impact of large-scale agriculture on the environment by avoiding unnecessary application of fertilizers and pesticides to crops.

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"The biggest problem in the past with aerial imagery in agriculture is that everything is time-sensitive, and with unmanned aerial vehicles we'd be able to process that data much more quickly, " said Steve Cubbage, president of Prime Meridian, a company that sells precision agriculture data services to growers.

WSJ: Farmers Experiment With Drones

These add-on modules might be designed for measuring vibration, temperature or displacement in fields where precision is important, such as agriculture, aviation and the medical field.

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The Javad GNSS system can be adapted to work with high-precision GPS devices including those already in the agriculture, surveying, construction and defense industries.

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