Soil Organic Matter Management: The Roles of Residue Quality in C Sequestration and N Supply - Sustainable Management of Soil Organic Matter - page 163

respect, crop rotation and inclusion of legume crops seem less important
than the crop management system type, at least in the initial phase. This
type of research may provide useful indications for future management,
within the European Common Agricultural Policy schemes, of land that
has been setaside for 20 years.
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