Agricultural Phosphorus Management for Environmental Protection: A Review

This review addresses research done over the past 40 years on different aspects of agricultural phosphorus (P) management for environmental protection. Inputs P are essential profitable crop production. Long-term application to soils has resulted in elevated levels soil P. accumulation may be desirable from an agronomic point view but it represents a threat freshwater quality. Indeed, runoff land is important component non-point source pollution and can accelerate eutrophication lakes streams. Even very small amounts raise concentration above critical value eutrophication. Excessive restricts water use recreation, industry, drinking due increased growth undesirable algae aquatic weeds. Current concerns facing environmentally sound agriculture similar worldwide revolve around agricultural, economic, compromises associated with balancing productivity values. Agricultural strategies should geared towards ensuring that P, finite earth resource, not wasted those do become so enriched there unnecessary risk too much being mobilized fields. Approaches, such as testing either models or indices have been studied implemented mitigate losses. Apparently, preferred instead this purpose because they more flexible. A holistic strategy therefore suggested by using conjunction index model.