The following sections provide a short historical outline of the evolution
of understanding crop-rotation effects (Section 1.1); furthermore,
versatile benefits of crop rotations are explained (Section 1.2). Several
examples of crop-rotation effects are mentioned (Section 1.3), and
different approaches are described for considering them in LCAs
(Section 1.4). None of them covers the full range of crop-rotation effects
and thus none is completely satisfactory. So far, no agreement has been
achieved about whether and how the various crop-rotation effects are
to be included in LCA via a uniform approach. The crop-rotation effects
are physically real, described in agricultural publications (Curl, 1963;
Ball et al., 2005; Karlen et al., 2013) and do have strong influence on
agricultural practices e.g. cultivation planning, plant protection and
plant nutrition. Practical needs for including these effects in LCA are
mentioned in Section 1.5.
The following sections provide a short historical outline of the evolutionof understanding crop-rotation effects (Section 1.1); furthermore,versatile benefits of crop rotations are explained (Section 1.2). Severalexamples of crop-rotation effects are mentioned (Section 1.3), anddifferent approaches are described for considering them in LCAs(Section 1.4). None of them covers the full range of crop-rotation effectsand thus none is completely satisfactory. So far, no agreement has beenachieved about whether and how the various crop-rotation effects areto be included in LCA via a uniform approach. The crop-rotation effectsare physically real, described in agricultural publications (Curl, 1963;Ball et al., 2005; Karlen et al., 2013) and do have strong influence onagricultural practices e.g. cultivation planning, plant protection andplant nutrition. Practical needs for including these effects in LCA arementioned in Section 1.5.
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