** Shares of the world’s biggest fertilizer company by capacity down 6.3 pct at $17.10 premarket
** Cuts full-year profit forecast due to weak demand and lower prices
** Forecast cut to 60-80 cents per share from 90 cents-$1.20 per share; analysts’ estimate 90 cents per share in profit, according to Thomson Reuters I/B/E/S.
** Sees Q2 profit of 15-25 cents per share, also below average estimate of 27 cents per share
** Cut the upper end of its 2016 potash sales volume forecast to 8.8 mln tonnes from 9.1 mln tonnes; retained the lower end of the forecast at 8.3 mln tonnes
** Reported 79.7 pct fall in Q1 profit, hurt by weak demand and competitive pricing in North America
** Up to Wednesday’s close, stock had fallen about 45 pct in the past 12 months