Influence of derived operation-specific tractor emission data on results from an LCI on wheat production |
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Authors: | Per-Anders Hansson Berit Mattsson |
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Institution: | 1. The Swedish University of Agricultural Sciences, 7033, SE-750 07, Uppsala, Sweden 2. SIK, The Swedish Institute for Food and Biotechnology, 5401, SE-402 29, G?teborg, Sweden
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Abstract: | The shortage of data for emissions from agricultural tractors contributes to LCA results on environmental load from modern
crop production possibly having high error levels and high uncertainties.
The first part of this work describes measurements and calculations made in order to obtain operation-specific agricultural
emission data. Calculations are based on emission data measured on a standard 70 kW tractor of a widely available make. In
the second part, results from an LCI on wheat production based on traditionally used emission data are calculated and compared
with results obtained when using the emission data for specific working operations derived in part one.
One conclusion of the study is that the emission values, when related to the energy in the used fuel, show very large variations
between different driving operations. Another conclusion is that the use of the new data results in a marked reduction of
the total air emissions produced in the wheat production chain, especially for CO and HC, but also for NOx and SO2. |
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Keywords: | Agriculture data quality emissions food production LCA Life Cycle Assessment vehicles |
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