High Quality Content by WIKIPEDIA articles! Peak phosphorus is the point in time at which the maximum global phosphorus production rate is reached. Phosphorus is a scarce finite resource on earth and due to its non-gaseous environmental cycle has resulted in alternative means of production other than mining being unavailable. According to some researchers, Earth`s phosphorus reserves are expected to be completely depleted in 50–100 years and peak phosphorus to be reached in approximately 2030. Whereas in stark contrast the International Fertilizer Development Center in a 2010 report estimates that global phosphate rock resources will last for several hundred years. The predominant source of phosphorus comes in the form of phosphate rock and in the past guano.