Add Yahoo as a preferred source to see more of our stories on Google. BISMARCK, N. D. (AP) -- Tennessee farmer Todd Littleton expects to pay $100,000 more for fertilizer this season, a 40% spike from his bill last year thanks to the war in Iran -- and he is scrambling to cover that extra cost.

The situation is drawing comparisons to the devastating 2002 drought, with Denver Water considering implementing drought restrictions and farmers across the state preparing for a challenging year with low amounts of water for irrigation.