Quote:
Originally Posted by UrbanFarmboy
Just so you know, you cant plant something in large quantities and then harvest it without sucking nutrients out of the ground.
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But couldn't a crop be grown as part of a rotation system? So that the different uses of the land over the years reduces the overall efect of the large quantities which are being grown? The nutrients that you take out when you harvest don't just vanish, they go places. Animals and other orgaisms travel over crops and they can be nutrient carriers.
When you convert the hemp to biofuel, would the trace nutrients be separated from the fuel molecules or would they remain as trace impurities in the fuel? If they are separated as part of the manufacturing process then what happens to them? If they are part of the fuel, what happens to them during combustion? Is there any way in which they can become part of their own cycle?