This article makes the case for dedicated bioenergy crops as preferrable to crop residues for bioenergy. Perennial crops build soil carbon more easily than annual crops. Crop residue should be retained in the field to sustain soil carbon, but perennial wood and grasses can be harvested without killing the plant and disturbing soil carbon. As long as this bioenergy is grown on already degraded land, it makes sense to me.
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In this article we show how residues for biomass are not the right approach in Europe to promote a biobased industry. We offer sound evidence that EU soils require perennial cropping systems to increase soil fertility and give several examples of energy crops that have been studied for many years and meeting that requirement succesfully.