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Dry Root Rot Disease Assays in Chickpea: a Detailed Methodology
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Diseases in intercropping systems.

Mark A Boudreau1

  • 1Department of Biology, Penn State Brandywine, Media, Pennsylvania 19063, USA. mark.boudreau26@gmail.com

Annual Review of Phytopathology
|June 4, 2013
PubMed
Summary
This summary is machine-generated.

Intercropping, planting multiple crops together, can reduce crop disease in tropical smallholdings. This practice offers disease control benefits by altering environmental conditions and pathogen interactions.

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Area of Science:

  • Agricultural Science
  • Plant Pathology
  • Ecology

Background:

  • Intercropping, the simultaneous cultivation of multiple crop species, is a traditional practice common in tropical smallholdings.
  • A potential benefit of intercropping is its role in disease control for various crops.

Purpose of the Study:

  • To synthesize phenomenological research and mechanistic understanding of intercropping's impact on crop disease.
  • To explore how intercropping influences disease dynamics and potentially offers disease management strategies.

Main Methods:

  • Review of over 200 phenomenological studies comparing disease incidence in monocrops versus intercrops.
  • Analysis of reported disease impacts, focusing on foliar fungi and nematodes.
  • Synthesis of proposed mechanisms by which intercropping affects disease dynamics.

Main Results:

  • Intercropping reduced disease in 73% of studies, primarily for foliar fungi.
  • Increases in disease were most commonly reported for nematode pathogens.
  • Mechanisms include altered dispersal, modified microclimate, changes in host physiology, and direct pathogen inhibition.

Conclusions:

  • Intercropping demonstrates significant potential for reducing crop disease, particularly in tropical agricultural systems.
  • Understanding the mechanisms underlying intercropping's effects is crucial for optimizing its application.
  • Further theoretical development can enhance intercropping strategies for both smallholder and industrial farming.