Design of an elemental analysis system for CELSS research.

Area of Science:

• Plant Biology
• Environmental Science
• Agricultural Science

Background:

• Controlled environment agriculture (CEA) relies on understanding plant physiology within enclosed systems.
• Physical closure of growth chambers significantly impacts plant biological processes.
• Nutrient element cycling in plants differs between sealed and open environments.

Purpose of the Study:

• To investigate the effects of sealed growth chambers on plant nutrient uptake, distribution, and re-release.
• To describe a system for elemental analysis to monitor nutrient mass balance in Controlled Ecological Life Support Systems (CELSS).
• To present data on nutrient element uptake by higher plants in a growth chamber setting.

Main Methods:

• Experimental studies with higher plants in tightly sealed growth chambers.
• Elemental analysis system for monitoring nutrient mass balance.
• Comparative analysis of nutrient cycling rates in sealed vs. open environments.

Main Results:

• Definite evidence of significant effects of chamber closure on plant biology.
• Altered rates of nutrient element uptake, distribution, and re-release (mass balance) observed in sealed chambers.
• Nutrient cycling rates in sealed chambers differ from open field agriculture and open growth chambers.

Conclusions:

• Plant nutrient mass balance is demonstrably affected by growth chamber physical closure.
• Understanding these altered nutrient dynamics is critical for optimizing plant growth and yield in CELSS.
• The described elemental analysis system provides a method for monitoring these crucial parameters in bioregenerative systems.