The contemporary plant-soil feedback in legume-cereal intercropping systems: a review of carbon, nutrient, and microbial dynamics

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  • University of Florence (UniFi)
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Original languageEnglish
JournalPlant and soil
Early online date1 Aug 2025
Publication statusE-pub ahead of print - 1 Aug 2025

Abstract

Background: Crop diversification practices, such as legume-cereal intercropping, are receiving increasing attention for the large-scale implementation because of crop yield advantages while simultaneously preserving various soil functions. To date, a comprehensive understanding of the soil nutrient and carbon (C) cycling and microbial dynamics underlying the crop yield advantage remains elusive. Scope: This review employs legume-cereal intercropping systems as a model to examine the current knowledge on the modulation of soil nitrogen (N), phosphorus (P), potassium (K), and C biogeochemistry resulting from the co-cultivation of these crops. This analysis emphasizes the functional potential of the soil microbiome and the plant-induced assemblage of microbial communities, highlighting key knowledge gaps. Drawing from this examination, we suggest expanding the traditional Plant-Soil Feedback (PSF) definition to encompass hetero- and conspecific effects occurring within a single growing season. We define this concept as Contemporary Plant-Soil Feedback (CPSF). Conclusions: Our analysis revealed consistent plant-induced changes in the performance and nutrient acquisition of neighboring plants, an effect that would be inadequately classified without this new framework. The examination of the CPSF in legume-cereal intercropping systems demonstrated that yield advantages are supported by more efficient N and C cycling, enhanced P and K availability, and improved maintenance of microbial functionality. This approach offers a novel perspective for investigating plant-soil dynamics in agricultural systems.

Keywords

    Carbon use efficiency, Multi-cropping systems, Plant-soil feedback, Soil microbial assemblages, Soil multifunctionality, Soil nutrient and carbon cycling

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The contemporary plant-soil feedback in legume-cereal intercropping systems: a review of carbon, nutrient, and microbial dynamics. / Picone, Riccardo; Pietramellara, Giacomo; Guggenberger, Georg et al.
In: Plant and soil, 01.08.2025.

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title = "The contemporary plant-soil feedback in legume-cereal intercropping systems: a review of carbon, nutrient, and microbial dynamics",
abstract = "Background: Crop diversification practices, such as legume-cereal intercropping, are receiving increasing attention for the large-scale implementation because of crop yield advantages while simultaneously preserving various soil functions. To date, a comprehensive understanding of the soil nutrient and carbon (C) cycling and microbial dynamics underlying the crop yield advantage remains elusive. Scope: This review employs legume-cereal intercropping systems as a model to examine the current knowledge on the modulation of soil nitrogen (N), phosphorus (P), potassium (K), and C biogeochemistry resulting from the co-cultivation of these crops. This analysis emphasizes the functional potential of the soil microbiome and the plant-induced assemblage of microbial communities, highlighting key knowledge gaps. Drawing from this examination, we suggest expanding the traditional Plant-Soil Feedback (PSF) definition to encompass hetero- and conspecific effects occurring within a single growing season. We define this concept as Contemporary Plant-Soil Feedback (CPSF). Conclusions: Our analysis revealed consistent plant-induced changes in the performance and nutrient acquisition of neighboring plants, an effect that would be inadequately classified without this new framework. The examination of the CPSF in legume-cereal intercropping systems demonstrated that yield advantages are supported by more efficient N and C cycling, enhanced P and K availability, and improved maintenance of microbial functionality. This approach offers a novel perspective for investigating plant-soil dynamics in agricultural systems.",
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author = "Riccardo Picone and Giacomo Pietramellara and Georg Guggenberger and Pathan, {Shamina Imran} and Norman Gentsch",
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T2 - a review of carbon, nutrient, and microbial dynamics

AU - Picone, Riccardo

AU - Pietramellara, Giacomo

AU - Guggenberger, Georg

AU - Pathan, Shamina Imran

AU - Gentsch, Norman

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