Evaluation of an Ozone-Induced Free Radical Solution’s Characteristics and Its Efficacy as an Alternative Pest Control Method

Author:

Wu Chundu1,Tang Peng1ORCID,Cao Aineng2,Ni Pengfei1,Zhang Bo1,Chang Zhongwei2

Affiliation:

1. School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

2. School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Abstract

In light of the environmental problems stemming from chemical pesticides, a preparation system for an ozone-induced free radical solution was developed to replace chemical pesticides for disease control. The effective synthesis process parameters for the solution under experimental conditions were determined through a single-factor experiment. The mechanism by which the solution eradicates pathogenic bacteria was investigated using electron microscopy, and a disease prevention and control experiment was conducted. Under slightly acidic conditions, the redox potential of the solution was observed to be high, with an air intake of 0.5 L/min and a liquid intake of 1.45 L/min, while the concentration decayed slowly, with a liquid intake of 0.98 L/min. The solution’s destructive effect on the bacteria’s internal and external structures intensified with prolonged action time and an increased number of free radicals. A 1.5 mg/L solution and 5% imidacloprid effectively reduced pest levels to grades 3 and 4, respectively. When the pH is 3, with air intake at 0.5 L/min and liquid intake at 0.98 L/min, the ozone-induced free radical solution exhibits strong oxidation and stability. At a concentration of 1.5 mg/L, the solution demonstrates a superior control effect on diseases and can partially replace chemical pesticides, offering a promising alternative for environmentally sustainable disease control.

Funder

Jiangsu Province Science and Technology Support Plan

Publisher

MDPI AG

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