Space: Science & Technology / 2021 / Article / Fig 7

Review Article

Biosphere 2’s Lessons about Living on Earth and in Space

Figure 7

The trade-offs between power required for supplying light energy and required farm size to feed inhabitants of a space base. The data is from studies of ultra-dwarf wheat, a crop developed at Utah State University with NASA support [58]. Efficiency was calculated as organic matter energy as a percentage of absorbed photosynthetic photon flux energy. The graph illustrates the general trends though efficiency and crop production will vary with crop, and the use of LED lights may significantly lower power requirements [27].