Inactivation of plant pathogens in irrigation water runoff using a novel UV disinfection system

Abstract

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Cannabis Inflorescence Yield and Cannabinoid Concentration Are Not Increased With Exposure to Short-Wavelength Ultraviolet-B Radiation

“…The wavelength cutoff for solar UV reaching the earth’s surface is approximately 290 nm ( Nikiforos et al, 2011 ), meaning that outdoor-grown plants are not exposed to short-wavelength UVB (i.e., <290 nm) or UVC (100 to 280 nm) ( McElroy and Fogal, 2008 ). While UVC is used in horticultural applications to inactivate microorganisms such as waterborne pathogens in recirculating irrigation systems ( Younis et al, 2019 ), foliage is only rarely directly exposed UVC – normally to inactivate foliar pathogens through short-term exposures ( Aarrouf and Urban, 2020 ) – since UVC can cause tissue damage ( Stapleton, 1992 ).…”

Electrolytic Disinfection of Irrigation Water for Intensive Crop Production in Greenhouses as Demonstrated on Tomatoes (Solanum lycopersicum Mill)

“…Here, the recirculating fertigation solution was gradually contaminated by tomato plants that had previously been infected with the selected pathogens. Not only does the transmission plant pathogens occurs naturally in the field or bed by water but also artificially, as has been demonstrated in many other studies of disinfection strategies in agriculture [54][55][56][57], whereby the fertigation solution or irrigation water is contaminated by adding a default concentration of propagules. Although a higher pathogen concentration is usually employed, it does not guarantee transmission of the pathogen and spread of the disease in the crop.…”

Application of high‐voltage discharges for disinfection and activation of irrigation water*

“…However, in the presence of mechanical impurities in water, the quality of disinfection is reduced; hence, the technology requires the installation of additional filters for cleaning nutrient solutions. The cost of ultraviolet water treatment, including the cost of energy, installation, and maintenance, is relatively high (Benami et al, 2015; Younis et al, 2019). There are promising developments in the field of water purification from exposure to solar radiation (Igoud et al, 2017) and using nanomaterials (Huo et al, 2020) to ultrasound (Matafonova and Batoev, 2019).…”