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Light Interception Measurement of Cherry and Apple Trees

Jingjin Zhang1, Patrick Scharf1, Qin Zhang1 and Matthew Whiting2
1 Center for Precision and Automated Agricultural Systems, WSU, 99350 Prosser, WA, USA 2 WSU Department of Horticulture

Photosynthetically active radiation (PAR) is the range of light wavelengths that stimulates photosynthesis in green plants, which reflects the light interception of the canopy. Based on the previous research, light interception is related to the yield and quality of fruit.

The goal of this project is to:

  • Design and build a system for high-density measurement of light interception with real-time data visualization
  • Design and build a system for field-rest light interception in apple and sweet cherry orchards of various architectures (e.g., vertical and angled 2-D fruiting walls)
  • Reconcile variations in light interception with fruit yield and quality
  • Investigate the ability to model canopy architecture and yield potential considering light interception.





If you would like more information about this topic or other developments in agriculture, contact Dr. Qin Zhang.