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Phoenix666 [soylentnews.org] writes:

To simulate a gardening experience on the Red Planet, researchers at NASA's Kennedy Space Center and the Florida Tech Buzz Aldrin Space Institute have begun to experiment with "Martian gardens [csmonitor.com]," using soil from Hawaii similar to the type of soil found on Mars. Martian soil is made up of crushed volcanic rock and contains no organic material, making plant survival significantly more difficult.
...
To gauge how much soil should be used and which nutrients should be added, researchers grew lettuce in three different types of soil: virtual Martian soil with no nutrients added, virtual Martian soil with nutrients added, and regular potting soil. They reported that the lettuce grown in the Mars-like soil with no nutrients added tasted the same, but had weaker roots and took longer to grow.
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Next, they plan to conduct similar experiments with radishes, Swiss chard, kale, Chinese cabbage, snow peas, dwarf peppers and tomatoes.

Potatoes, guys, potatoes [businessinsider.com].

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