Skandi Rogers wrote:I suspect you would need to remove all the soil from inside the barn (no concrete floor? sounds odd to me) it will be seriously polluted with way to much fertiliser. Just putting the cow crap out on a field in a heap for one winter stunts the plants in that area the next year, I hate to think what 25 years of chickens and no rain will have done.
Heating, what's your heating plan for winter? You're going to need a huge heating unit to keep that size building out of danger of freezing.
There's no concrete floor in a commercial broiler house. The floor is packed earth with a foot or two of sawdust on top. Concrete would stay too wet and cold, I think. In ideal conditions the litter is supposed to stay fairly dry through the whole flock.
I know that it's recommended to remove the top 2 to 6 inches of soil when converting chicken houses for other uses. And I'd need to do something to balance the pH. I'd have to have the soil tested to know exactly what it needed, and then tested again after I added some amendments.
I would prefer not to heat the greenhouse, though I'll need some kind of emergency backup for those very rare occasions when temps here get below 30 degrees for any length of time. I live in zone 7B, and we're fairly well-protected by the Chesapeake Bay on one side and the Atlantic Ocean on the other. We rarely even get more than a dusting of snow here. There have been a couple years where we had temps in the 80s at Christmas!
With no chickens right now the temps in the buildings have stayed above freezing even on the coldest days. But there's a foot of sawdust & manure on the ground. It doesn't generate a lot of heat, but it makes a little - just enough to keep the pipes from freezing. Once that litter is gone I'll need to have something else in place to basically do the same thing. Most citrus, as far as I have seen, can survive down to about 35 F as long as it's protected from frost.
I'm looking at
the methods used by a lady in British Columbia who is
growing citrus in a conventional greenhouse. I don't know what zone she's in exactly, but I know that she also utilizes a wood gasifier for heat to keep her greenhouse above 3 C (37 F) in winter, so I'll have to look into what that would take to set up. She also uses pools in her greenhouse for thermal mass, and if they get a cold spell she'll heat those pools as well to keep the greenhouse warmer.
I do plan on selling wholesale as well as at the farmer's market, and I want to have more crops than just citrus so that I'm not completely dependent upon one crop. I'm still trying to figure out what those other crops would be, though.