BISMARCK, N.D. (AP) — BNSF Railway Co. will add trains in the Dakotas, Minnesota and Montana solely for transporting fertilizer for spring crop planting, the railroad has told a federal oversight board. The federal board this week ordered BNSF and Canadian Pacific Railway to report their plans by Friday to ensure delivery of fertilizer shipments this spring. Johnson, a former North Dakota agriculture commissioner, said adequate fertilizer supplies are crucial for U.S.