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Related Experiment Videos

A hydroponic system for microgravity plant experiments.

B D Wright1, W C Bausch, W M Knott

  • 1Agricultural Engineering Dept., Texas A&M University, College Station, USA.

Transactions of the ASAE. American Society of Agricultural Engineers
|March 1, 1988
PubMed
Summary
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A new system called the Capillary Effect Root Environment System (CERES) was developed to provide plants with water and nutrients in space. This system uses capillary forces for controlled delivery, enabling plant growth in microgravity.

Area of Science:

  • Space Biology
  • Biotechnology
  • Aerospace Engineering

Background:

  • Future space stations require sustainable methods for in-orbit plant cultivation for research and food.
  • Microgravity presents unique challenges for delivering water and nutrients to plant roots.

Purpose of the Study:

  • To develop and test a system for controlled water and nutrient delivery to plants in microgravity.
  • To ensure simultaneous provision of water, nutrients, and air to plant roots.

Main Methods:

  • The Capillary Effect Root Environment System (CERES) utilizes capillary forces to manage nutrient solution flow.
  • A porous membrane separates the nutrient solution from the plant roots, maintaining a thin film of moisture.
  • A hydrophobic/hydrophilic membrane system was employed to remove air bubbles from the nutrient solution.
Keywords:
NASA Center KSCNASA Discipline Life Support SystemsNASA Discipline Number 61-20NASA Program CELSS

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Main Results:

  • The CERES system effectively controls nutrient solution circulation in a simulated weightless environment.
  • Plant roots are supplied with water, nutrients, and air concurrently.
  • A flight-hardware-scaled model of CERES was constructed for space shuttle testing.

Conclusions:

  • The Capillary Effect Root Environment System (CERES) is a viable solution for plant cultivation in microgravity.
  • This technology supports the long-term goal of growing plants in space for exploration and sustenance.
  • Further testing in space is warranted to validate CERES performance.