The Nutrient Use Geographic Information System (NuGIS) integrates multiple tabular and spatial datasets to create county-level estimates of nutrients applied to the soil in fertilizer and livestock manure, and nutrients removed by harvested agricultural crops. Nutrient balances and removal efficiencies were estimated for five years, coinciding with the USDA Census of Agriculture, from 1987 - 2007. Geospatial techniques were used to estimate balances and efficiencies for 8-digit hydrologic units using the county-level data. The results of this project are shown here with interactive thematic maps.
The NuGIS project is sponsored and directed by the International Plant Nutrition Institute (IPNI). The two primary objectives of this project are to assess nutrient use efficiency and balance in crop production and identify weaknesses in the balance estimation processes and the datasets used for these estimations.
The NuGIS Project is a cooperative effort among many people. The concept was first presented by the Potash & Phosphate Institute (PPI) in 2005, at one of the first meetings of the TFI-PPI Nutrient Use Task Force. The conceptual framework, interpretation, and reviewing were a joint effort of the IPNI staff: C.S. Snyder, T.W. Bruulsema, T.S. Murrell, H.R. Reetz, S.B. Phillips, R.L. Mikkelsen, W.M. Stewart, and T.L. Jensen. Quentin Rund and Ryan Williams of PAQ Interactive converted concepts and tactical approaches into numeric estimates and graphical representations. Final editing and production support were coordinated by D.L. Armstrong and K.P. Griffin of IPNI's editorial group. The project is coordinated by P.E. Fixen of IPNI.
NuGIS is a work in progress and we welcome your comments at [email protected]