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Do diversified crop rotations influence soil physical health? A meta-analysis by Ekene Mark-Anthony Iheshiulo; Francis J. Larney; Guillermo Hernandez-Ramirez; Mervin St. Luce; Kui Liu; Henry Wai Chau is a Agricultural and Biological Sciences article available to read on EtoBox.

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Crop management practices such as rotation, as well as climatic and edaphic factors, modulate soil physical health. However, the overall magnitude of crop rotation benefits on soil physical health properties across a broad range of different conditions remains uncertain. To address this, we conducted a meta-analysis on 865 paired comparisons from 148 rotation studies to examine i) how crop diversity affected soil physical health properties: bulk density, aggregate stability, porosity, infiltration rate, and saturated hydraulic conductivity, and ii) how management practices, climatic, and edaphic factors influenced crop diversity effects. Overall, increased crop diversity (i.e., number of crop species in the rotation) significantly reduced bulk density (−1.6 ± 1.3%), enhanced soil aggregation (15.9 ± 12.7%), improved porosity (3.1 ± 2.0%), and saturated hydraulic conductivity (112.8 ± 57.9%), but did not significantly change infiltration rate (92.2 ± 98.7%) compared to less diverse systems. Compared to using conventional tillage and cereals-only rotations, diverse rotations combined with conservation tillage or including grain legumes performed even better in enhancing both soil agg

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Author

Ekene Mark-Anthony Iheshiulo; Francis J. Larney; Guillermo Hernandez-Ramirez; Mervin St. Luce; Kui Liu; Henry Wai Chau

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)