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Table 5 The number of studies included in the systematic map investigating crop rotation interventions

From: What are the effects of agricultural management on soil organic carbon in boreo-temperate systems?

InterventionNo. of studies
Monoculture vs: 
 Complex rotation (4 years)32
 Rotations involving perennials27
 2 or 3 years rotations105
 Rotations involving 1 year “perennials”26
  Sewn fallow or grass26
  Chemical or bare fallow4
 Comparison of different crops 
  Legumes ± or legumes vs legumes144
  Grass/hay/green fallow± or vs. each other20
  Only crops32
 Annual crop vs. perennial crop (2 years or more)61
 Multi cropping20
  Under-sown/intercropping (legumes or other) 
  Double cropping28
  Cover- or catch crops17
 Energy crops 
  Energy crops vs. energy crops9
  Energy crops vs. other crops7
 Simple rotation (2 year) vs. complex rotations (3 years or more)46
  1. Interventions are catalogued in a hierarchical way, such that column one is the rotation with which columns two and three are compared. Column three details more specific sub-categories from within the category in the preceding column