This article caught my eye when I was looking for the ethanol yield of Miscanthus. Sounds interesting !!
In Khosla's simple arithmetic, with irrigation and other inputs, it would be possible to grow 20 tonnes of crops per acre and each ton of crop would yield 100 gallons of ethanol
Thus 50 million acres would generate as much as 100 billion gallons. He recommended switching over to a tall grass called miscanthus in the US, which would yield a higher profit.
However, this – when also related to land use is where Khosla's vision may not apply to developing countries, while it may make good sense in the US and Europe.
The fact is that any conversion of land to produce ethanol, particularly if it is with crops like miscanthus that require fertile soil, could only be at the cost of food and fuelwood.
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