Articles | Volume 5, issue 1
SOIL, 5, 15–32, 2019
https://doi.org/10.5194/soil-5-15-2019
SOIL, 5, 15–32, 2019
https://doi.org/10.5194/soil-5-15-2019

Original research article 15 Jan 2019

Original research article | 15 Jan 2019

Global meta-analysis of the relationship between soil organic matter and crop yields

Emily E. Oldfield et al.

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Cited articles

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In this paper, we quantify the global-level relationship between soil organic matter and crop yield. We find that greater concentrations of soil organic matter are associated with greater yields and that increases in yields saturate around 2 % SOC. Using the relationship that we generate, we then provide an estimate of the potential for soil organic matter management to reduce global yield gaps for two of the most important staple crops (maize and wheat) grown worldwide.