Soil area to absorption of energy is small, from leaf area to absorption of energy it looks ok.
Efficiency is overrated! Sure, you need soil, etc, but you can have two crops at the same area (or just some kind of grass or other vegetable cover)
And funny how the land usage argument disappears when it's the oil industry that's using arable land http://www.greenpeace.org/canada/en/campaigns/Energy/tarsand...
Soil area to absorption of energy is small, from leaf area to absorption of energy it looks ok.
Efficiency is overrated! Sure, you need soil, etc, but you can have two crops at the same area (or just some kind of grass or other vegetable cover)
And funny how the land usage argument disappears when it's the oil industry that's using arable land http://www.greenpeace.org/canada/en/campaigns/Energy/tarsand...