Bruce FIELDS (Chicago) mentions the existence of :

The Commercial EarthBox

“There a couple of interesting pdf-files in the top left corner of this link
http://www.earthboxfarming.com/
They provide detailed figures on yield, cost, etc that you might find interesting“.

Going to that website, I read :

“The EarthBox is loaded with everything you need to grow acres of the highest yield of annual and perennial crops you have ever experienced—and more! That’s because each EarthBox is the result of years of valuable first-hand experience…as well as ongoing research with Land Grant Universities to provide broader applications of this unique growing system.Optimize your produce, maximize your yield…with the EarthBox!

• Organic growing requires no three-year transition period;
  the first crop can be certified with OMRI-approved products.
• Spring crops are ready up to two weeks earlier than in ground.
• Fall crops have superior production for top-end market.
• No fumigants are required.
• Eliminate clean soil cultivation.
• Eliminate erosion.
• Produce two crops per season, without rotation.
• No nitrates are released into the soil.
• Use 60% less water.
• Minimal herbicide required.
• Use 28% less fertilizer.
• Use 10% less insecticide.
• Leave stakes in the ground year after year.
• Spend 26% less on production with the EarthBox.

  ——————-

  Thanks, Bruce !