Are vertical farms really the answer? A new study reveals their surprisingly large footprint | ironically, vertical farming even uses twice as much *land*, by using farmed jute fibers as root casings

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• Canconda@lemmy.ca ⁨6⁩ ⁨days⁩ ago

  TLDR they require electricity. Yawn.

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• lvxferre@mander.xyz ⁨6⁩ ⁨days⁩ ago

  I don’t think they’re the answer now, but they might become one among many answers in the future, as they improve.

  I feel like a lot of the issues pointed out are a result of inefficiency. You’d need better designed systems, but for example:

  • heating - solar panels pretty much waste Sun heating. This should be redirected towards plants.
  • cooling - instead of cooling the farm, design it so you can reflect heat in hot days
  • lighting - instead of converting blue/red lights into electricity and back into light, couldn’t the light be redirected towards the plants?

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• DragonTypeWyvern@midwest.social ⁨6⁩ ⁨days⁩ ago

  Double land use, or double arable land use?

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  • stabby_cicada@slrpnk.net ⁨6⁩ ⁨days⁩ ago

    Arable land. The issue is the vertical farms rely on jute fibers, which are farmed conventionally, and take up more land than the crops grown in the vertical farms normally would.

    The article discusses some workarounds to this problem, but currently it’s another entry in the “technological solutions to climate change are predominantly scams” column.

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• wolfyvegan@slrpnk.net ⁨3⁩ ⁨days⁩ ago

  Beyond the emissions footprint the most surprising, and altogether unintuitive, result was that vertical farms had a greater land-use impact than field farms. This came down to the roots of the plants—literally. In vertical farms, lettuce plants are often sown in natural casings made of jute fibers, which come from a tall grass crop that’s cultivated in tropical regions.

  Is it jute, or is it grass? You cannot have it both ways. (In either case, coconut coir or a sustainable non-timber forest product would definitely make more sense for large-scale deployments.)

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• LibertyLizard@slrpnk.net ⁨6⁩ ⁨days⁩ ago

  I think they only make sense if the entire process from top to bottom is redesigned to minimize impact. This could be pretty tough and I’m not sure the energy requirements are even possible with today’s technology. Maybe if advanced geothermal really takes off? The land occupied by solar doesn’t make sense unless maybe it’s in extreme desert or something.

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• Five@slrpnk.net ⁨6⁩ ⁨days⁩ ago

  TLDR The study only covered Lettuce farms. Using Jute fiber plugs requires more land use than traditional farming, replacing them with coconut coir would use less land than traditional farming.

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