If six-month contracts become the standard in the potash space, we might expect similar performance for MOS, POT and AGU) — whether or not it also translates into higher food prices downstream. Mosaic (MOS) has confessed that last quarter its average potash sale was at $318 a ton, so the last few months have definitely been good to these companies. It would take a really good number — on par with MOS and its fivefold profit expansion last year — to push POT much higher from here.