Recycled nutrients as a phosphorus source for Canadian organic agriculture: a perspective

The challenges associated with the global phosphorus (P) cycle are complex and multifaceted, from geological resource limitation, to P deficiency on arable farmland, environmental contamination via excess fertilization. Although no single solution can address all of cycle, principle circularity provides a framework toward more sustainable food-secure system. Phosphorus farmland is widespread, particularly organically managed farms due negative balances in low-input cropping systems. Recycled nutrient sources divert food human wastes back onto farmland; they have potential ameliorate both global-scale issues phosphate rock depletion farm-scale issue deficiency, for organic farms. For recycled nutrients act as viable alternatives conventional sources, their ability supply improve yields must be demonstrated. This paper an introduction importance fertilizer key role play Canada.