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Estimating yield gaps at the cropping system level.

Nicolas Guilpart1,2, Patricio Grassini1, Victor O Sadras3

  • 1Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA.

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Summary
This summary is machine-generated.

Analyzing cropping systems, not just individual crops, can significantly boost food production. This study introduces a framework to identify alternative systems, revealing potential yield increases far exceeding individual crop improvements.

Keywords:
BangladeshCropping systemMaizeRiceYield gapYield potential

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Area of Science:

  • Agricultural Science
  • Agronomy
  • Food Security

Background:

  • Individual crop yield gap analyses inform food security but overlook system-level optimizations.
  • Cropping system yield can be enhanced by altering the spatial and temporal arrangement of crops.

Purpose of the Study:

  • To define cropping system yield potential and yield gap.
  • To develop a framework for identifying and evaluating alternative cropping systems.
  • To assess the potential for increasing crop production through system-level changes.

Main Methods:

  • Defined cropping system yield potential and yield gap.
  • Developed a framework to identify alternative cropping systems.
  • Applied the framework to irrigated rice-maize systems in four diverse locations in Bangladesh.

Main Results:

  • Identified realistic alternative cropping systems for each location.
  • Demonstrated that changes in cropping intensity can yield 43%–64% more than improving individual crop management.
  • Highlighted two locations with substantial potential for increased production via cropping intensity.

Conclusions:

  • The framework offers a tool to assess new cropping systems' food production capacity, resource needs, and environmental footprint.
  • Expanding yield gap analysis to the cropping system level aids in designing more productive and sustainable farming systems.
  • This approach is crucial for adapting to climate change and enhancing global food security.