Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species
- PDF / 326,056 Bytes
- 5 Pages / 432 x 648 pts Page_size
- 33 Downloads / 174 Views
Plant Growth Response to Atmospheric Air Plasma Treatments of Seeds of 5 Plant Species Masaharu Shiratani1, Thapanut Sarinont1, Takaaki Amano1, Nobuya Hayashi2, and Kazunori Koga1, 1
Graduate School of Information Science and Electrical Engineering, Kyushu University 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan 2 Interdisciplinary Graduate School of Engineering Science, Kyushu University 6-1 Kasuga-kouen, Fukuoka, 816-8580, Japan ABSTRACT We have investigated plant growth response to atmospheric air plasma treatments of seeds on their growth for 5 plant speces; Radish sprout (Raphanus sativus L.), rice (Oryza Sativa), Zinnia, Arabidopsis L. Thaliana and Plumeri. The average length of Radish sprout, rice, Arabidopsis Thaliana, Plumeria and Zinnia, are 250%, 80%, 60%, 30% and 20% longer than those without plasma treatments, respectively. We have obtained correlation between the growth enhancement and O3 and NOx concentration. The optimum radical dose for the growth enhancement depends on plant species. INTRODUCTION The sharp growth in food demand is mainly the result of world population growth to over 9 billion by 2050 [1]. There are three main categories of improvement methods of the agricultural productivity and output: irrigation, fertilization, and crop protection. Atmospheric pressure nonthermal plasmas can contribute such improvements in the three categories by various ways such as sterilization, fertilization, water treatment and purification, soil treatment, seed treatment, storage improvement, insecticide, pre-harvest treatments, post-harvest treatments, because they provide radicals, ions, electrons, light, as well as electric field without appreciable thermal damage to plants, crops, and fruits. Improvement of agricultural productivity has been tried by gas fumigation, seed treatments using radiations, UV light, laser, electric field, and magnetic field. It is important to clarify advantages and disadvantages of plasma treatments over other methods. One important advantage of plasma treatments is the fact that highly reactive and short lifetime species of high density without any thermal damage can be provided by plasmas [2-14]. Highly reactive species are more effective than stable chemicals and have much less residual harmful effects due to their short lifetime. For instnace, reactive species of O3 and NOx have positive and negative effects on seed germination and plant growth, depending on dose and flux [15-18]. As one of such approaches using plasmas, we have shown that atmospheric pressure plasma treatments of seeds can boost crop yield, reduce cultivation time and improve agricultural productivity [7-14]. Here, we report growth enhancement of Oryza sativa, Raphanus sativus L., Zinnia, Plumeria and arabidopsis L. thaliana by a combinatorial plasma treatment method using dielectric barrier discharge (DBD) device.
1265 Downloaded from https://www.cambridge.org/core. Teachers College Library - Columbia University, on 21 Jan 2018 at 15:58:26, subject to the Cambridge Core terms of use, available at ht
Data Loading...
