Ellipse said:
My question is: whatenergetic valuehave those plants? Anyway for a survival perspective, the answer is pretty quick.
If you have a garden or a bigger part of the arable land, my advice would be planted the Energy willow.
Energy willows are CO2 neutral.
The yield on 1 hectare of willow energy corresponds to approximately 4700 liters of oil.
1 hectare gives 15 to 25 tons of wooden mass.
Has the property ecoremediation in operation of waste water treatment and land.
Studies have shown that in plantations of willow has more earthworms than in conventional agricultural plantations. This is of great importance for biodiversity conservation
Energy willow produces about 20 times more energy than the energy required for its cultivation and harvesting. Some countries such as Denmark use the space beside roads for planting energy willow .. So in addition to obtaining renewable energy, plantations have the function of protection against air pollution and noise.
link:
http://www.bionera.com/growing/growing-willow-energy
http://www.folkecenter.net/gb/rd/biogas/biomass-energy-crops/energy_willow/
http://agroenergie.ca/produits-services/boutures-et-tiges