Phosphorus loss from land to water: integrating agricultural andenvironmental managementSharpley et al.
Agriculture is regarded as an important source of P in the environment.
We argue that the overall goal of efforts to
reduce P loss to water should involve balancing P inputs and outputs at farm and watershed levels by optimizinganimal feed rations and land application of P as mineral fertilizer and manure.
Since the late 1960s, the relative contributions of P
to water bodies from point and non-point sources haschanged dramatically.
After World War II, farming systems became more
specialized in the USA, with crop and livestock operations in different region...
Allowed
Adobe Portable Document Format (.pdf) - application/pdf
Case Files 
