Healthy soil and sustainable growing

["Phil Bunch" <pbunch@cox.net>]

I'm thinking about how to raise night temperature from 50F to 55F for
tomatoes. Anyone think a double walled hoop house with black plastic mulch
would do it? I'm thinking that if one warmed the soil during the day the
radiation at night may be capable of 5 degree rise in air temperature. I'm
pretty sure that the dimensions of the hoop house would be critical but I
don't know how large it would have to be.

Any ideas?