Here is a great slideshow on why India will be an increasingly large consumer of Potash - http://www.potashcorp.com/industry_overview/2010/markets/india/1/
Once you factor in the growing population, need to eat, need to eat more protien, it becomes obvious how Potash (required for crops as well as animal feed) is a commodity that will look to re-scale its 2008 peak soon.
With Potash Corp out of the take over limelight - http://www.bhpbilliton.com/bb/investorsMedia/news/2010/bhpBillitonWithdrawsItsOfferToAcquirePotashcorpAndReactivatesItsBuybackProgram.jsp, the focus is back on the juniors (http://www.reuters.com/article/idUSTRE6BI0MN20101219)
So far no Indian firm has made a play for a Potash resource. They have made plays for coal, iron ore and oil deposits across the globe.
Of all the juniors, I like Western Potash, the most - http://ca.finance.yahoo.com/q?s=WPX.V
Playing the Potash juniors is suited for the patient at heart as some ofthe majors have capacity expansion plans but as we have seen with the Baffin Island and New Millenium Capital story - every one wants their own captive supplies.
Disclosure: I am long POT.