Deere & Co reported a lower third-quarter profit and tightened its annual profit forecast on Thursday, as U.S. tariffs dent margins on its farm equipment, sending the company's shares down six per cent.

Sales of farm tractors and combines have declined over the last year in North America
Outlook did not account for any impact from potential import tariffs, retaliatory tariffs company says
Commodity prices, high inventories and interest rates already pressuring sales as U.S. now threatens more disruption