Figure 1 Effect of fertilization on SOC content in the Box Plot Experiment Großbeeren (Rühlmann 2003) after 39 years (after 5th rotation 24 t ha−1 a−1FYM). Crop rotation: Brassica oleracea, Daucus carota, Cucumis sativus, Allium porrum, Apium graveolens (since 1977).
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