TY - GEN
T1 - Inactivation of Ralstonia solanacearum using pulse discharge under culture solution in hydroponics
AU - Saito, Y.
AU - Takahashi, K.
AU - Takaki, K.
AU - Satta, N.
AU - Okumura, T.
AU - Fujio, T.
N1 - Funding Information:
This work was supported by a grant-in-aid from the Ministry of Agriculture, Forestry and Fisheries of Japan (A scheme to revitalize agriculture and fisheries in disaster area through deploying highly advanced technology) and by a Grant-in-Aid for Scientific Research (A) from the Japan Society for the Promotion of Science, Grant Number 15H02231.
Publisher Copyright:
© 2017 IEEE.
PY - 2018/2/13
Y1 - 2018/2/13
N2 - 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.
AB - 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.
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U2 - 10.1109/PPC.2017.8291293
DO - 10.1109/PPC.2017.8291293
M3 - Conference contribution
AN - SCOPUS:85054231475
SN - 9781509057481
T3 - IEEE International Pulsed Power Conference
BT - 2017 IEEE 21st International Conference on Pulsed Power, PPC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE International Conference on Pulsed Power, PPC 2017
Y2 - 18 June 2017 through 22 June 2017
ER -