Agriculture

Optimizing spectral quality with quantum dots to enhance crop yield in controlled environments

C. H. P. Ii, D. Hebert, et al.

This groundbreaking research conducted by Charles H. Parrish II, Damon Hebert, Aaron Jackson, Karthik Ramasamy, Hunter McDaniel, Gene A. Giacomelli, and Matthew R. Bergren explores innovative luminescent films that enhance plant growth in bioregenerative life-support systems for off-Earth settlements. By modifying solar spectrum quality, the study reveals impressive increases in biomass for red romaine lettuce, suggesting significant implications for greenhouse productivity both on Earth and in space.

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Abstract

To improve plant productivity in bioregenerative life-support systems (BLSS) for off-Earth settlements, the study explored modifying solar spectrum quality using lightweight, luminescent films. CulnS₂/ZnS quantum dot (QD) films down-converted UV/blue photons to red emissions (600 and 660 nm), increasing biomass in red romaine lettuce. Edible dry mass increased by 13% and 9%, and edible fresh mass by 11% each, under the 600 and 660 nm QD films, respectively. This improved photosynthetic efficiency suggests potential for enhanced greenhouse productivity on Earth and in space.

Publisher

Communications Biology

Published On

Jan 27, 2021

Authors

Charles H. Parrish II, Damon Hebert, Aaron Jackson, Karthik Ramasamy, Hunter McDaniel, Gene A. Giacomelli, Matthew R. Bergren

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