Canopy Light Interception
Plant light interception efficiency is a key determinant of carbon uptake by plants; plant productivity over seasonal time-scales is approximately proportional to intercepted light. Canopy architecture, leaf area, leaf angle distribution, and leaf dispersion are determinants in the light distribution and interception within the canopy. In horticultural crops pruning strategies can optimise tree structure and drive higher productivity and increase plant health and longevity. The measurement of fraction of intercepted PAR (f) is an indicator of a plant’s light use efficiency or its ability to convert sunlight into biomass.
Combining the reuqired sensors with an IoT Node, the Canopy Light Interception system is a flexible and powerful measurement solution for simultaneous measurement of key plant growth indicators. Further parameters can be connected by adding additional sensors to the IoT Node, allowing for the display of simultaneous plant measurements.
The simple method requires at least one PAR sensor above the canopy to measure direct beam and one or more PAR arrays beneath the canopy. A PAR array is necessary beneath or within a canopy because it samples a larger area and considers sunlight variability caused by the canopy. Plotting f over a growing season against some measure of yield or biomass indicates the light use efficiency of crops.
The MFR-NODE and AD-NODE can be configured with LINPAR and PAR sensors to measure, monitor and calculate intercepted PAR (f), and hence biomass and yield.
The specifications of the MFR-NODE and AD-NODE can be found on the Node product pages.
The sensor specifications can be found on the Apogee PAR product pages:
-
No case studies found
No resources found
Canopy Light Interception
