"Chickpeas Harvested from Lunar Soil Mixture... Possibility of Space Farming Opens Up"

University of Texas Team Experiments with Simulated Lunar Soil
Chickpeas Successfully Grown in Medium with 75% Lunar Soil
Key Factors: Red Worm Castings and Arbuscular Mycorrhizal Fungi

The film "The Martian," which depicts a survival story on Mars, shows the protagonist growing crops to eat. Now, the possibility of realizing this scenario on the Moon has opened up.

Chickpeas Sprouting in Simulated Moon Soil. Research Team from the University of Texas

On March 6 (local time), Yonhap News reported that "a research team from the University of Texas at Austin and Texas A&M University harvested chickpeas grown in a medium made by mixing worm castings into a soil that simulates lunar surface soil, as published in the scientific journal 'Scientific Reports.'

According to Yonhap News, lunar regolith—the soil on the Moon's surface—is known to lack the microorganisms and organic matter necessary for plant life. While it contains essential nutrients and minerals for plant growth, it also includes heavy metals that can be toxic to plants. The research team conducted the study to determine what mechanisms are necessary to convert lunar regolith into a medium suitable for plant cultivation.

First, the team created simulated lunar soil by mimicking the composition of actual lunar regolith samples. To achieve ideal conditions for plant growth, they mixed in varying proportions of castings produced by red worms. These worm castings are rich in essential nutrients and minerals for plants and contain diverse microbial communities. Next, before sowing the chickpeas, the seeds were coated with arbuscular mycorrhizal fungi (AMF). These fungi are reported to help the plant absorb certain essential nutrients and reduce the uptake of heavy metals.

A scene of chickpeas coated with arbuscular mycorrhizal fungi (AMF) being cultivated in soil simulating lunar regolith mixed with 25% earthworm byproducts. Research team from the University of Texas, USA

The experiment showed that when worm castings were mixed into the simulated lunar soil and the seeds were coated with arbuscular mycorrhizal fungi, the chickpeas were able to flower and produce seeds. This result held true even when the medium contained up to 75% lunar soil simulant. In contrast, in environments composed solely of lunar soil simulant without worm castings or fungi, the plants failed to flower, and those that sprouted quickly died.

The research team stated, "This is the first case of cultivating chickpeas all the way to seed production using lunar regolith simulant," adding, "By making lunar regolith usable for plant cultivation, we have taken a step toward sustainable agriculture on the Moon." They further commented, "Harvesting chickpeas from simulated lunar soil is an important milestone, but the taste and safety of these beans remain an issue to be verified. Going forward, we need to analyze the nutritional content of the chickpeas and confirm that no toxic metals were absorbed during the cultivation process."

This content was produced with the assistance of AI translation services.