Research on the Feasibility of Spraying Micro/Nano Bubble Ozonated Water for Airborne Disease Prevention

Abstract

This research combined micro/nano bubble techniques with ozone disinfection to determine feasibility of applying micro/nano bubble ozonated water in preventing tomato airborne disease. Results indicated that dissolving ozone in micro/nano bubbles is more efficient than using a mixing pump. In our in vitro studies, when dissolved ozone concentration was 1.6 mg/L, a 5.2 to 3.3 log reduction in Alternaria solani Sorauer conidia was observed; with concentration of 1.8 mg/L, there was a 5.0 to 3.7 log reduction in Cladosporium fulvum conidia. Furthermore, spraying ozonated water in a certain concentration range (0.6–1.8 mg/L) had no significant negative effects on tomato growth.

Keywords:

• Ozone
• Airborne Disease
• Micro/Nano Bubble
• Ozonated Water
• Phytotoxicity
• Tomato

Additional information

Funding

This work was supported by a grant from the “863” National High Technology Research and Development Program (No. 2013AA103004).