Investigating Possibility of Soil Cultivation of Carbonaceous Asteroids after Dahl Legolis : Dong-A Science

Grown in simulated soil mixed with algae… Promoting alternative experiences with Hairribechi

Grown in simulated soil mixed with algae… Promoting alternative experiences with Hairribechi

[Steven. J. Russell et al 2022 Planet. Sci. J. 3 155 제공/ 재판매 및 DB 금지]

After ‘regolith’, a dusty substance that coats the lunar surface, research results suggest that crops can be grown in carbonaceous chondritic asteroid soil.

According to science news outlet ScienceNews, a research team led by space ecologist Sherry Pfeffer-Bairr from the University of North Dakota in the United States has published the results of growing plants in soil modeled on carbonaceous asteroids. , published by the American Astronomical Society. AAS) Published in the “Planetary Science Journal”, an open access informational journal.

The team focused on carbonaceous chondrites because they likely contain water. These asteroids are also known to be rich in three main nutrients needed for cultivation, such as nitrogen, phosphoric acid, and potassium.

The research team mixed “algae” (seaweed) with simulated soils modeled on carbonaceous chondrites to varying degrees, using romaine lettuce (Latuca sativa), chili peppers (bell peppers) and red radishes (Ravanus ). satisfied). plant. All of these plants have been successfully grown in the microgravity environment of the International Space Station (ISS).

Algae are organic materials formed by the accumulation of aquatic plant remains or wetlands in the soil, and are known for their excellent water retention and aeration capacity.

As a result, it was found that in simulated soil mixed with algae, all crops grew although there are differences among crops, but in simulated soil without algae only, soil particles accumulate and l water cannot be stored, so plants cannot grow.

The research team plans to conduct an experiment to improve soil physical properties such as algae by cultivating and growing ‘hairy vetch’, a vine-like green crop of the legume family, in soil. which mimics carbonaceous chondrite, then inserting the stem into the ground. If the experiment is correct, hairy vetch seeds, which weigh much less than seaweed, can be used, which may give them an advantage when trying to plant on other asteroids.

The study results come shortly after researchers from the University of Florida Institute of Food and Agricultural Sciences (FU/IFAS) reported success in germinating and growing young thaliana seeds in from ligules brought from the moon in May.

These attempts are of significant significance as they pave the way not only for securing food resources directly at the site of manned space exploration, but also for securing oxygen through plant photosynthesis.

Arabidopsis thaliana grows on the lunar soil

[UF/IFAS photo by Tyler Jones 제공/ 재판매 및 DB 금지]

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