Optimizing Plant Growth in Microgravity: A Biostimulant Growth Medium for Agriculture in Deep Space Environments

Long-duration space missions require sustainable systems for plant cultivation to ensure a continuous supply of food, oxygen, and waste recycling. This study presents the development of a novel liquid biostimulant growth medium tailored for optimizing plant growth in microgravity conditions, characteristic of deep space environments. The growth medium integrates a balanced mixture of macro- and micronutrients, growth-promoting hormones, and bioactive compounds, all of which are designed to address the unique challenges associated with nutrient uptake and physiological stress in microgravity. Key ingredients include essential elements such as nitrogen, phosphorus, potassium, calcium, and magnesium, as well as trace elements, natural plant growth regulators, and organic acids. These components work synergistically to enhance nutrient absorption and promote robust plant development. The biostimulant medium has been optimized through rigorous testing under simulated space conditions, demonstrating its potential to improve plant height, biomass, root length, and stress resilience. The findings suggest that this biostimulant medium could play a significant role in supporting sustainable agricultural practices for long-term human missions in space, contributing to the feasibility and success of deep space exploration. This research represents a critical advancement in space agriculture, offering valuable insights into plant biology in extreme environments and paving the way for future studies and applications.