Feb 27 (Reuters) - Fertilizer producer Mosaic

missed Wall Street expectations for fourth-quarter profit on

Thursday, hurt by lower potash prices and sales.

Crop prices, including those of soybean, wheat and corn,

have been falling over recent quarters due to oversupply and

weakening demand, forcing farmers to curtail spending, impacting

firms such as Mosaic.

The company's quarterly net sales volume in its potash

segment was down at 2.2 million tonnes, compared with 2.6

million tonnes from a year earlier.

The Tampa, Florida-based company reported adjusted earnings

of 45 cents per share for the quarter ended December 31,

compared with analysts' average estimate of 57 cents according

to data compiled by LSEG.