Keith Addison wrote:
> According to the Alcohol Yield tables in the Mother Earth Alcohol
> Fuel Manual, Jerusalem artichokes yield 20 gallons of 99.5% ethanol
> per ton, and 1,200 gallons per acre. Yield per acre is calculated on
> three harvests of heads per year.
Are you sure they're making it from the heads? I'd think it more
likely the tubers, which have a large yield and are quite starchy. The heads
are pretty small. And the site does give tuber yield, not upper plant yield,
unless I'm missing something.
--
Harmon Seaver, MLIS
CyberShamanix
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