Potash, which produces nitrogen and is used for agricultural fertilisers, has caught Swiss based trader Serge Berger's eye. He says it's a great stock from a trading point of view - it has risen 2.7 percent in the last four days.

Serge believes the stock is showing strength whilst the rest of the market is weak. As a result, Serge plans to buy on a push above USD 35.60, to place a stop at USD 34.70 and his target is USD 37.

Potash Corporation of Saskatchewan Inc is the world's largest fertiliser enterprise. The company owns and operates five potash mines in Saskatchewan and one in New Brunswick.