|Czymmek, Karl - CORNELL UNIVERSITY|
|Ketterings, Quirine - CORNELL UNIVERSITY|
Submitted to: Internet Web Page
Publication Type: Other
Publication Acceptance Date: September 1, 2002
Publication Date: September 20, 2002
Citation: Kleinman, P.J., Sharpley, A.N., Bryant, R.B., Czymmek, K., Ketterings, Q. 2002. National phosphorus runoff project: new york. Internet Web Page. http://pswmru.arsup.psu.edu/phosphorus/NewYork.pdf Technical Abstract: The National Phosphorus Research Project was developed to coordinate research on the interaction between agricultural management and agricultural phosphorus pollution. As part of the Project, rainfall/runoff experiments were conducted on a variety of New York soils to assess the effects of soil test phosphorus, manure management and cover crop management on runoff phosphorus concentrations. Results reveal that calcareous soils release significantly less phosphorus to runoff than do acidic soils with comparable soil test levels. Manure application temporarily overwhelms the effect of soil test phosphorus on runoff phosphorus. In the near-term, rate of application and the water soluble phosphorus content of manure significantly all control runoff phosphorus losses. While introduction of cover crops may significantly reduce particulate phosphorus losses under post-harvest conditions in the autumn, dissolved phosphorus losses are ultimately controlled by soil phosphorus and manure management.