Inactivation of Ralstonia solanacearum using pulse discharge under culture solution in hydroponics

Y. Saito, K. Takahashi, K. Takaki, N. Satta, T. Okumura, T. Fujio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A discharge plasma under water is a promising candidate to reduce the risks of bacterial infection in a hydroponics culture system. We developed a system using plasma under solution and the performance of the developed system was evaluated using tomato seedlings in the recirculation system and Ralstonia solanacearum which causes wilt disease, followed by a serious crop loss. The 15 L culture solution was heavily contaminated with R.solanacearum. After that, the discharge plasma treatment was continued for 100 min. We prepared another experimental section that was a control. The culture solution in control was contaminated with R.solanacearum without plasma treatment. Seedlings were monitored and disease index was evaluated. The result shows that the disease index of discharge group increased on the 6th day, and was 20 % on the 8th day and after. In contrast, the disease index of control increased on the 4th day and continuously increasing to be 100 % on the 8th day. The density of R. solanacearum of control was above 107 CFU/mL, in contrast, that of discharge group was below 102 CFU/mL on the initial day.

Original languageEnglish
Title of host publication2017 IEEE 21st International Conference on Pulsed Power, PPC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781509057481
DOIs
Publication statusPublished - Feb 13 2018
Externally publishedYes
Event21st IEEE International Conference on Pulsed Power, PPC 2017 - Brighton, United Kingdom
Duration: Jun 18 2017Jun 22 2017

Publication series

NameIEEE International Pulsed Power Conference
Volume2017-June
ISSN (Print)2158-4915
ISSN (Electronic)2158-4923

Conference

Conference21st IEEE International Conference on Pulsed Power, PPC 2017
CountryUnited Kingdom
CityBrighton
Period6/18/176/22/17

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

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