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ARS Home » Northeast Area » University Park, Pennsylvania » Pasture Systems & Watershed Management Research » Research » Publications at this Location » Publication #102840
Title: NITROGEN AND PHOSPHORUS SOURCES AND THEIR IMPORTANCE TO PASTURE-BASED LIVESTOCK SYSTEMS

Author
item Pionke, Harry
item Rotz, Clarence - Al
item Sanderson, Matt
item Stout, William
item Sharpley, Andrew

Submitted to: British Grassland Society Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 6/14/1999
Publication Date: N/A
Citation: Pionke, H.B., Rotz, C.A., Sanderson, M.A., Stout, W.L., Sharpley, A.N. 1999. Nitrogen and phosphorus sources and their importance to pasture-based systems. British Grassland Society Proceedings. p. 13-21.

Interpretive Summary:

Technical Abstract: The major nitrogen (N) and phosphorus (P) sources and resources in pasture- based dairy farms are identified and examined. This was done by applying a dairy-based whole-farm simulation model (DAFOSYM) to four scenarios representing different pasture-based dairy systems found in the UK and northeastern US. The four scenarios include major differences in fertilizer and supplemental grain feed inputs and milk production. The N and P results are presented in terms of inputs, outputs, and on-farm storages. The implications are presented and analyzed for managing pasture-based dairy systems now and in the future.