I remember reading in Mother Earth News and/or the Boston Globe about an
amazing lady on Martha's Vineyard, Massachusetts, who had a very successful
greenhouse business, heated and fertilized by chickens (housed at one end)
and rabbits (at the other). I think it was called Sol Viva. Among other
things, she shipped mesclun to fancy New York restaurants.
The greenhouse was over 3,000 square feet and plants grew at three levels,
using hangers and catwalks and such.
Originally the air heated by the livestock was simply blown into the
greenhouse, but that didn't work because of excess ammonia. Eventually a
system evolved involving underground piping and air filtering material, which
works fine and justifies the cost. As I recall, this was a very profitable
business, back around 1994.
(betty) Ann Gras
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