Growth stimulation of radish sprouts using discharge plasmas

Antioxidative activity and growth regulation of Brassicaceae induced by oxygen radical irradiation

“…Recently, growth enhancement of living bodies such as cells, microorganisms, and plants, has been studied utilizing electrical pulses [1][2][3][4][5][6][7][8] and discharge plasmas. [9][10][11][12] When seeds of plants such as the Brassicaceae sprouts are irradiated with a discharge plasma, the growth speed of the sprout is observed to be accelerated after seeding. 13,14) Figure 1 shows a typical result of the growth enhancement of the Raphanus sativus sprout (radish sprout), which is a kind of Brassicaceae, 4 days after seeding, when the seeds were irradiated by atmospheric air plasma.…”

Growth Enhancement of Radish Sprouts Induced by Low Pressure O2Radio Frequency Discharge Plasma Irradiation

“…One agricultural application in the fourth stage is the plasma treatment of crops by using pulsed power discharges and low-pressure discharges to enhance the growth of plants. [9][10][11][12][13][14][15][16][17][18] However, the growth enhancement mechanism has not been clarified because previous experiments contained many effects due to electric and magnetic fields, photons, ions, electrons, and radicals in the plasmas. Many studies have investigated growth enhancement induced by electrolyzed solutions, 19) methyl jasmonate, 20) and DC electric fields, 21) but such studies did not use plasmas and thus provide little insight into the growth enhancement mechanism for plasma irradiation.…”

Simple method of improving harvest by nonthermal air plasma irradiation of seeds of Arabidopsis thaliana (L.)

“…This nonequilibrium feature opens a wide variety of nonthermal plasma applications in medical [1][2][3][4][5] and agricultural areas. [6][7][8][9][10] The growth enhancement of plants, which is an important topic in agriculture, has been studied using the nonthermal atmospheric-pressure plasma [8][9][10] and other methods such as those involving low-pressure plasmas, [10][11][12][13] plasma-activated water, [14][15][16] and pulsed electric field. [17][18][19][20] Most of these studies have reported an improvement in seed germination rate and=or an increase in plant length.…”