Cornell Controlled Environmental Agriculture Light Research

Cornell University is using Apogee's SQ-520 Full-Spectrum Quantum Sensor (USB) to research growing vegetables in greenhouses with electric lights. Jake Holley, Graduate Student in the School of Integrative Plant Science, provided a description of the project:

Cornell's Controlled Environment Agriculture group conducts research on growing vegetables in greenhouses with the use of electric lighting. Measuring the total light in these experiments presents a challenge, as light spectra differ between electric lighting sources and natural sunlight. Apogee's SQ-520 Full-Spectrum Smart Quantum Sensor (USB) provided a solution to measuring light for this experiment, as well as logging data.

Apogee SQ-520 Full-spectrum Quantum Sensor  Apogee SQ-520 Full-spectrum Quantum Sensor

Apogee's SQ-520 Full-Spectrum Smart Quantum Sensor (USB) is ideal for this application due to the accuracy of measurements under any wavelength of light in the photosynthetically active spectrum. Different spectra of light are provided in ten treatments, and measuring this light will allow researchers to discern differences in overall light between treatments without light spectra causing any error.

Single Lettuce  Single Treatment

The data logging capability incorporated into the sensor is a critically important aspect and a powerful asset. Minute-by-minute data is needed to fully understand the influence of weather, seasonal changes, and addition of supplemental light controlled by the automated greenhouse computer systems. The ease of use and reliability of the sensors has allowed us to obtain this data. 

Full Greenhouse  Lettuce with SQ-520 Quantum Sensor

The research project will help to determine the most electrically efficient and effective lights to use for growing produce in a greenhouse setting. With the advent of new LED technology and the potential to customize electric light spectra, our research will help greenhouse growers produce healthier plants while reducing their carbon footprint.

Outside Greenhouse Evening


Application Summary

Apogee Instruments' SQ-520 Full-Spectrum Quantum Sensor is helping Cornell University conduct research on growing vegetables in greenhouses using electric lighting.
Apogee Sensors Used
Cornell University
Ithaca, New York