2/18/2012

5.2- Crop yield

understand the effects on crop yield of increased carbon dioxide and increased temperature in glasshouses
Increased concentration of CO2:
  • Substrate
  • Rate of photosynthesis increases which means that there is a higher yield
Increased temperature:
  • Increase in rate of photosynthesis which means that there is a higher yield
  • There is an optimum temperature along the graph
  • Avoiding frost damage, Constant temperature --> higher yield
Both of the conditions have limits

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