BUZZ-Potash Corp Of Saskatchewan Inc: Withdraws takeover bid for K+S
** Potash miner's U.S.-listed shares up 8.3 pct at $22.20 premarket
** Withdraws $8.9 bln offer for German K+S AG
** Cites decline in global commodity, equity markets and lack of engagement by K+S management
** Up to Friday's close, stock had fallen 25.9 pct since Potash announced its takeover proposal on June 25
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