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Accelerated Deployment of an Agricultural Nutrient Management Tool

The Maryland Phosphorus Site Index

^a Dep. of Natural Resource Sci. and Landscape Architecture, Univ. of Maryland, College Park, MD 20742
^b Dep. of Plant and Soil Sci., Univ. of Delaware, Newark, DE 19717
^c USDA-ARS, Kimberly, ID 83341

View larger version (14K): [in a new window]   Fig. 1. Frequency distribution of Maryland Phosphorus Site Index (PSI) ratings for 646 representative agricultural sites in Maryland.

View larger version (25K): [in a new window]   Fig. 2. Frequency distribution of Maryland Phosphorus Site Index (PSI) ratings for agricultural fields evaluated in Maryland with conventional soil test P (Mehlich-1 P) (a) less than (n = 354) or (b) greater than (n = 292) the 75 mg kg-1 environmental threshold.