Fertilizer maker Mosaic (MOS) missed analysts' fiscal second-quarter earnings estimates as international distributors delayed purchases. And it said it expects lower profit margins this quarter. But shares rose nearly 3% in intraday trading Friday. The company's gain was in sync with the recent upward movement for the Chemicals-Agricultural group, and came in the wake of a deal Mosaic, Potash Corp. (POT) and Agrium (AGU) disclosed last Monday to