How Plants and Water Shape Tiny Life in Vertical Farms

Vertical farms are gaining popularity for their controlled plant growth. But how do these farms impact the tiny life forms, or microbes, on plants? These microbes can be beneficial or harmful.

Sources of Microbes in Vertical Farms

A recent study examined two primary sources of microbes in vertical farms:

• Irrigation water
• Plant-growing material

The study focused on kale and lettuce and discovered that:

• Microbes in water differed from those in plant-growing material.
• Water was not the main source of microbes on plants.
• Rainwater, used to replenish the water supply, was not the primary source of microbes in either system.

Scientists believe the main microbial growth areas are:

• Irrigation trays
• The plants themselves

Effects of UV-C Light and LED Lighting

The study also investigated how UV-C light (used for water treatment) and LED lighting affect microbes. UV-C light is known to kill certain microbes. Researchers used proxy pathogens to measure these effects.

Key Findings and Implications

The study provides crucial insights into how microbes spread and grow in vertical farms. This knowledge can help farmers:

• Cultivate healthier plants
• Prevent disease outbreaks