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Cereal-legume intercropping: a smart review using topic modelling.

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Summary
This summary is machine-generated.

This study used bibliometric analysis to review 4,732 cereal-legume intercropping papers. Findings highlight research gaps in underutilized crops like buckwheat and lupin, and ecosystem services, guiding future sustainable agriculture research.

Keywords:
cerealintercroplegumetext miningtopic model

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Area of Science:

  • Agricultural Science
  • Sustainable Agriculture
  • Bibliometrics

Background:

  • Cereal-legume intercropping is gaining interest for sustainable agriculture.
  • Manual screening of numerous research papers is time-consuming.
  • Identifying knowledge gaps and future research is crucial.

Purpose of the Study:

  • To automatically identify topics and research gaps in cereal-legume intercropping literature.
  • To provide a representation of the current research landscape.
  • To reduce the manual workload in literature screening.

Main Methods:

  • Bibliometric analysis combined with text mining and topic modeling.
  • Corpus sourced from Web of Science and Scopus (4,732 papers).
  • Analysis focused on common and underutilized crops.

Main Results:

  • Significant increase in publications on cereal-legume intercropping, predominantly from China.
  • Maize, wheat, and soybean are the most studied crops; buckwheat and lupin received less attention.
  • Yield and nitrogen fixation are primary research focuses; ecosystem services are emerging but understudied.

Conclusions:

  • Further research is needed on underutilized crops (buckwheat, lupin) as intercropping partners.
  • Investigating species interactions (e.g., root exudates) and pest/disease management is essential.
  • In-depth research on the full spectrum of ecosystem services in intercropping systems is necessary.