Maximum Yield USA December 2020 / January 2021 | Page 41

Nutrient solution disinfection methods include a range of options — while most are effective at killing pathogens contained in the solution itself , they are not a guarantee of keeping a system clear of infection as pathogens contained inside infected root systems are protected from any treatment effects . Commercially , large-scale hydroponic growers who use solution disinfection methods select those that are the least risk to the crop , including UV , ozone , heat , and filtration , as well as biological methods . Use of chemical disinfection agents that are dose responsive are less preferred as there is a risk of toxicity if rates applied are too high or the crop is at a sensitive stage .
UV — Ultra-Violet Radiation Disinfection
UV is a plant-safe and effective water and nutrient solution disinfection method and smaller units are available through the aquarium / fish industry that can be used in hydroponic systems . Antimicrobial activity largely occurs within the UVC range of 200-280nm with plant pathogens becoming inactivated when UV affects the nucleic acid which strongly absorbs at or close to 260nm . the MOST TRUSTED name in
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