Fig. 2: Associations between pre-crop groups or pre-crop species in rotations and their effect on subsequent crop yield.
From: Crop rotations synergize yield, nutrition, and revenue: a meta-analysis
a Effects of different pre-crop functional groups (left) on yield of various subsequent crop functional groups (right) as compared to monoculture. b Effects of different preceding crop species on yield of various subsequent crop species. The flow width, represented by the scale on the right, indicates the magnitude of the pre-crop group/species on the subsequent crop group/species yield (% yield increase). Only crop sequences with significant mean effect on yield (P < 0.05) were represented. The number in parenthesis indicates the total number of observations and situations with n < 10 are not shown. Source data and full statistical results are provided in the Source Data file.
