Injuries to plants from controlled environment contaminants

Area of Science:

• Environmental Science
• Plant Science
• Toxicology

Background:

• Controlled environments are essential for plant research and cultivation.
• These environments are susceptible to various contaminants originating from system materials and plants themselves.
• Identifying and quantifying these contaminants is challenging due to low injurious dosages and varied plant sensitivities.

Purpose of the Study:

• To identify common contaminants in controlled environments that negatively affect plant growth.
• To highlight the sources and types of toxic compounds emitted from materials and biological sources.
• To emphasize the need for careful monitoring and control of environmental contaminants.

Main Methods:

• Review of literature on contaminants in controlled environments.
• Identification of specific toxic compounds and their sources (e.g., plastics, paints, steam, mercury, plant emissions, human respiration).
• Discussion of challenges in contaminant detection and plant injury assessment.

Main Results:

• Plastics emit volatile compounds like di-butyl phthalate, toxic to plants.
• Paints release xylene, and steam may contain hydroxylamines.
• Mercury, ethylene, and carbon dioxide are also identified as growth-inhibiting agents.
• Plant species and cultivars exhibit differential sensitivity to these contaminants.

Conclusions:

• Contaminants from materials and plants pose significant risks to plant health in controlled environments.
• Effective control strategies include air filtration and ventilation.
• Thorough testing of specific plant species and cultivars is essential to ensure a non-toxic growing environment.