Fertilizer costs are high because China put a ban on exports of potash because they need it internally. Russia has the largest deposit of potash and they are likely selling it to China at the moment. Saskatchewan has the next biggest deposit. The potash barons are pleased with the high demand because the price goes way up. Just like with oil, the potash cartels increase and decrease production as they choose. The last time potash was priced this high, people starved because they could not afford to buy fertilizer to grow their crops.

I don't understand this nitrogen reduction. All anyone would need to do is grow a crop of legumes to fix nitrogen in the soil. ??? Why are they reducing nitrogen?