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Tanino, Katsumi; Fujiki, Satoshi; Yanagisawa, Takufumi; Kanou, Kyoichi

doi:10.1541/ieejfms1972.98.518

Cited by 1 publication

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“…The air injection is also effective in improving the energy efficiency for the production of the chemically active species because the air layer between the high-voltage wire and the water contributes to reduce the onset voltage of the discharge and the Joule loss into the water. [23][24][25][26] The discharge treatment time was set as 15 or 30 min.…”

Section: Methodsmentioning

confidence: 99%

Improvement of growth rate of plants by bubble discharge in water

Takahata

Takaki

Satta

et al. 2014

Jpn. J. Appl. Phys.

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The effect of bubble discharge in water on the growth rate of plants was investigated experimentally for application to plant cultivation systems. Spinach (Spinacia oleracea), radish (Raphanus sativus var. sativus), and strawberry (Fragaria × ananassa) were used as specimens to clarify the effect of the discharge treatment on edible parts of the plants. The specimens were cultivated in pots filled with artificial soil, which included chicken manure charcoal. Distilled water was sprayed on the artificial soil and drained through a hole in the pots to a water storage tank. The water was circulated from the water storage tank to the cultivation pots after 15 or 30 min discharge treatment on alternate days. A magnetic compression-type pulsed power generator was used to produce the bubble discharge with a repetition rate of 250 pps. The plant height in the growth phase and the dry weight of the harvested plants were improved markedly by the discharge treatment in water. The soil and plant analyzer development (SPAD) value of the plants also improved in the growth phase of the plants. The concentration of nitrate nitrogen, which mainly contributed to the improvement of the growth rate, in the water increased with the discharge treatment. The Brix value of edible parts of Fragaria × ananassa increased with the discharge treatment. The inactivation of bacteria in the water was also confirmed with the discharge treatment.

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Section: Methodsmentioning

confidence: 99%