Turning Photons Into Food

Описание: In this video Dr. Bruce Bugbee shows the calculations necessary to determine crop yield potential when light is the only limiting factor. This is now widely used to predict yields in indoor agriculture and vertical farming. The approach starts from the efficiency of photosynthesis (measured as quantum yield), expands to include the efficiency of respiration (called carbon use efficiency), and includes photon capture efficiency and harvest index. He uses a model called the Energy Cascade Model. This model has been used by NASA to model the size of a space farm in regenerative food production. It is also used by the USDA to calculate potential yield of agriculture on Earth.

00:52 - Acknowledging NASA and the USDA as the funding agencies for this research
01:41 - Units of calculation for food production in controlled environments
03:25 - The most important equation in the world, particularly to any life scientist
04:31 - Process of photosynthesis
06:22 - Revising how we write the equation for photosynthesis
09:13 - Calculating quantum yield
11:56 - Making ATP energy and respiration
15:15 - Realistic measurements of photons
15:52 - Energy Cascade model
18:44 - Potential yield of crops
19:42 - Exploring a paper he wrote about adding carbon dioxide to plants
20:24 - Economic analysis of indoor agriculture
23:50 - Understanding the rapidly increasing cost of photons through the market price of produce
26:39 - Example of the amount of solar panels needed to provide the energy for perfect indoor agriculture
28:48 - Peering into the future with advances in LED lights and other technology

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