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- Sharpley, Andrew; Tunney, Hubert
- Journal of environmental quality 2000 v.29 no.1 pp. 176
- phosphorus; losses from soil; pollution control; soil nutrients; water pollution; intensive farming; agricultural watersheds; eutrophication; agricultural soils; best management practices; animal manures; organic fertilizers; research
- ... The accumulation, management, and transfer of P in intensive farming systems has increased P export from agricultural watersheds and accelerated eutrophication of surface waters. Even though much research on P has been done in the last 20 years, there are still too few answers to the many questions now being asked regarding agricultural production and environmental quality. To address these concer ...
- Sharpley, Andrew; Foy, Bob; Withers, Paul
- Journal of environmental quality 2000 v.29 no.1 pp. 1
- phosphorus fertilizers; runoff; water pollution; pollution control
- ... Inputs of P are essential for profitable crop and livestock production. However, its export in watershed runoff can accelerate the eutrophication of receiving fresh waters. The specialization of crop and livestock farming has created regional imbalances in P inputs in feed and fertilizer and output in farm produce. In many areas, soil P exceeds crop needs and has enriched surface runoff with P. Th ...