<正>1 INTRODUCTION Nutrient supply, in combination with water supply and soil quality are key for efficient crop production. As many of the nutrients, except N, have to be mined and are finite resources,the recirculation of nutrients is essential to maintain soil fertility and food production. Consequently nutrient management in agrifood systems is not only a matter of supply, but also of reusing nutrients.
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Ursinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Berry, Brieanne
Blackmer, Travis
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Univ Maine, Sch Econ, 5782 Winslow Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Blackmer, Travis
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Haedicke, Michael
Lee, Susanne
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Univ Maine, Senator George J Mitchell Ctr Sustainabil Solut, 5710 Norman Smith Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Lee, Susanne
MacRae, Jean D.
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Univ Maine, Civil & Environm Engn, 5571 Boardman Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
MacRae, Jean D.
Miller, T. Reed
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Miller, T. Reed
Nayak, Balunkeswar
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Univ Maine, Sch Food & Agr, Food Sci & Human Nutr, 5763 Rogers Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Nayak, Balunkeswar
Rivet-Prefontaine, Louis
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Univ Maine, Sociol, 5728 Fernald Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Rivet-Prefontaine, Louis
Saber, Deborah
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Florida Southern Coll, Sch Nursing, 111 Lake Hollingsworth Dr, Lakeland, FL 33801 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Saber, Deborah
Silka, Linda
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Univ Maine, Senator George J Mitchell Ctr Sustainabil Solut, 5710 Norman Smith Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Silka, Linda
Thakali, Astha
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Univ Maine, Civil & Environm Engn, 5571 Boardman Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Thakali, Astha
Wildwistle, Jared
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Gulf Maine Res Inst, 350 Commercial St, Portland, ME 04101 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA
Wildwistle, Jared
Yoder, Chyanne
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Univ Maine, Anthropol & Environm Policy, 5773 South Stevens Hall, Orono, ME 04469 USAUrsinus Coll, Environm & Sustainabil, 601 E Main St,Pfahler Hall, Collegeville, PA 19426 USA