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Post by TooSchoolForCool on Dec 7, 2018 16:38:44 GMT -5
I find you all here quite intelligent, so I was wondering if you could help me out with an experiment I thought up.
Ok if any of you in a cold climate could test it out and see if it works, or at least if you know something about growing plants let me know if my theory is valid.
Here’s the idea:
Plants require certain temperatures to grow, so what if you dug a circular hole in the ground: would you be able to dig far enough to create a suitable climate for the plant? Any edible plant, just generalization.
Say 10 ft in the ground, could you grow tomatoes in the sides of the walls of the hole you dug in Canada/Alaska/Russia? Obviously some mirrors would be needed to increase light in the bottom, or you could use LED’s if you had extra power....
But what do you think? Obviously the facts aren’t there, and 10ft may not be enough based upon the ground temperatures, but you get the overall idea. Anyone willing to try out my idea or let me know what they think?
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Post by nightmarepatrol on Dec 7, 2018 22:19:27 GMT -5
The problem that far north is permafrost. Roots can go a long way and there's no telling how they' react to frozen ground. Some plants might be okay, but it could be fatal to others. Hydroponics will work though. It's spendy to get into but it does work.
I don't live in the far north any more, but there have been a lot of people try similar things and the energy costs can be really high. You would need metal halide lights to grow indoors (read lots of electricity) and it's ultimately cheaper to buy food.
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Post by Why? on Dec 8, 2018 0:53:11 GMT -5
Hey man. I grow some pretty unusual plants and cacti so I have some experience guess?
It won't work. Plants don't only need light, they need fresh air, control of ambient moisture. That far underground would need pest and vermin controls. Just a hole in the ground won't work. If you're looking for an underground farm for a nuke bunker, you'd need lot more stuff.
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Post by wildboar on Dec 8, 2018 5:32:49 GMT -5
It is true the temperature is fairly stable at a certain depth (depending where you are in the world) however digging a 10ft hole you have just removed the 10ft of thermal mass/ insulation to that depth ... your 10ft hole has just become "the surface".
I'm no expert but I know people do dig into the ground for the earth to provide insulation but there is an expense to this ... you would need a greenhouse type structure over the top anyway.. a solar collector to grab any available sunlight and something to store any collected warmth. Google "Passive solar greenhouse"
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Post by psychopsyd on Dec 8, 2018 8:18:57 GMT -5
"Cold as a well digger's @$$" is a fairly common expression....and seems to indicate that the bottom of your hole would be colder than the surface if no additional heat were provided....
The earth around your hole is a good insulator...but if there is little to no heat to hold in.....
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