WOYANG, April 23, 2014 - A man fuels an unmanned aerial vehicle (UAV) used for spraying pesticide on a wheat field in Woyang County, east China's Anhui Province, April 23, 2014. The use of UAV promoted the efficiency of spraying pesticide.

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An unmanned aerial vehicle (UAV) sprays pesticide on a wheat field in Woyang County, east China's Anhui Province, April 23, 2014.

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