Agricultural phosphorus and water quality: sources, transport and management
Freshwater eutrophication is usually controlled by inputs of phosphorus (P).To identify critical sources of P export from agricultural catchments we investigated hydrological and chemical factors controlling P export L-Glutamine from a mixed land use (30% wooded, 50% cultivated, 20% pasture) 39.5-ha catchment in east-central Pennsylvania, USA.Mehli