Humidification effect of air plasma effluent gas on suppressing conidium germination of a plant pathogenic fungus in the liquid phase

Increase of the water flow rate into atmospheric pressure air discharge plasma for humidification can significantly improve suppressing conidium germination of a plant pathogenic fungus in the liquid phase by its effluent gas exposure. The role of the introduced water includes enhancement of hydrogen supply to the plasma and cooling of the plasma effluent gas. The hydrogen-containing precursors for antibacterial species generation are experimentally increased. The gas cooling by the latent heat assists dinitrogen pentoxide density in the gas phase, a suggested precursor for antibacterial species generation near the liquid surface. This suggested near-surface reaction is a second-order reaction, generally requiring lower precursors concentrations and leading to less residues, thus it can be an important process for agricultural applications.