A farmer demonstrates use of a John Deere & Co. Greenstar 2630 terminal, left, Amazonen-Werke H Dreyer GmbH GPS Switch, top right, and Amatron terminals, below right, in the cab of a Claas KGaA Axion 820 tractor in a field of wheat at Thrales End Farm near Harpenden, U.K., on Monday June 6, 2016. German chemical company Bayer AG cited the growth in such digitally assisted farming as a key reason for its $62 billion bid for Monsanto Co., which has become a leading provider of analytics used by growers. Photographer: Luke MacGregor/Bloomberg via Getty Images
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