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Nutrient Removal by Corn Grain Harvest

^a Dep. of Plant Biol. and Pathology, 59 Dudley Rd., Foran Hall, Cook College, New Brunswick, NJ 08901-8520
^b Dep. of Plant Sci., Univ. of Delaware, Newark, DE 19717-1303
^c Dep. of Crop and Soil Sci., 116 Agric. Sci. Bldg., University Park, PA 16082
^d Nat. Resour. Sci. and Landscape Architecture, Univ. of Maryland, 214 H J Patterson Hall, College Park, MD 20742
^e Dep. of Plant and Soil Sci., Univ. of Massachusetts, Amherst, MA 01003
^f Potash and Phosphate Inst., 18 Maplewood Drive, Guelph, ON, Canada N1G 1L8
^g Rutgers Coop. Ext. of Burlington County, 49 Rancocas St., Mount Holly, NJ 08060-1317

View larger version (11K): [in a new window]   Fig. 1. Association between corn grain P concentrations and soil test P level at 23 site-years in five states.

View larger version (29K): [in a new window]   Fig. 2. Relationship between nutrient concentrations in corn grain and crop yield level.