Oct 27 (Reuters) - Potash Corp of Saskatchewan POT.TO POT.N , the world's biggest fertilizer company by capacity, reported a 25.7 percent drop in quarterly sales, as potash prices remained weak.
The company also cut the upper end of its full-year earnings forecast to 40 cents-45 cents per share from 40 cents-55 cents per share.
The company's net income fell to $81 million, or 10 cents per share, in the third quarter ended Sept. 30, from $282 million, or 34 cents per share, a year earlier.
Sales fell to $1.14 billion from $1.53 billion, the company said on Thursday. Corp and fellow Canadian fertilizer producer Agrium Inc AGU.TO agreed to combine in September to navigate a severe industry slump by boosting efficiency and cutting costs.