Agriculture

Global systematic review with meta-analysis reveals yield advantage of legume-based rotations and its drivers

J. Zhao, J. Chen, et al.

Discover how legumes can boost main crop yields by 20% in a groundbreaking study conducted by Jie Zhao, Ji Chen, Damien Beillouin, Hans Lambers, Yadong Yang, Pete Smith, Zhaohai Zeng, Jørgen E. Olesen, and Huadong Zang. This research reveals that legume-based rotations are vital for enhancing global crop production, especially in low-input environments!

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Abstract

This study synthesizes 11,768 yield observations from 462 field experiments globally to investigate the impact of legume pre-crops on main crop yield. Results show that legumes enhanced main crop yield by 20%, an effect that decreases with increased nitrogen fertilizer rates and crop diversity. Yield benefits are consistent across main crops and pedo-climatic regions, with greater advantages (32% vs. 7%) in low-yielding environments. The study concludes that legume-based rotations are a critical pathway for enhancing global crop production, particularly in low-input and low-diversity systems.

Publisher

Nature Communications

Published On

Aug 22, 2022

Authors

Jie Zhao, Ji Chen, Damien Beillouin, Hans Lambers, Yadong Yang, Pete Smith, Zhaohai Zeng, Jørgen E. Olesen, Huadong Zang

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