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the United States Government nor any agency thereof, or any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for any third party's use, or the results of such use, of any information, apparatus, product or process disclosed in this report, or represents that its use by such third party would not(More)
Application of computer technology such as Geographical Information Systems (GIS) to help farmers optimize fertilization, improve soil fertility and protect soil from erosion is currently of considerable interest as a topic of research. The objective of this study was to develop a GIS-based software package that can be used to help farmers select fertilizer(More)
A Canadian Agricultural Nitrogen Budget model (CANB v4.0) was developed to calculate two Agrienvironmental Indicators; Residual Soil Nitrogen (RSN) and the Indicator of Risk of Water Contamination by Nitrogen (IROWC-N) at 1:1M Soil Landscape of Canada scale for all Canadian farmland. The RSN (kg N ha-1) is the amount of inorganic N which remains in the soil(More)
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