July 30 (Reuters) - Potash Corp of Saskatchewan Inc POT.TO
POT.N , the world's biggest fertilizer company by market
capitalization, reported a 12 percent drop in quarterly profit,
hurt mainly by weak nitrogen earnings and lower phosphate sales.
The company's net income fell to $417 million, or 50 cents
per share, in the second quarter ended June 30, from $472
million, or 56 cents per share, a year earlier. ID:nPn31cvd5
Revenue fell 8.5 percent to $1.73 billion.