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Effects of Presowing PEMF Treatment of Tomato Seed on Growth, Yield


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Hindawi Publishing Corporation
e Scientific World Journal
Volume 2014, Article ID 369745, 6 pages http://dx.doi.org/10.1155/2014/369745
Research Article
Effects of Presowing Pulsed Electromagnetic Treatment of Tomato Seed on Growth, Yield, and Lycopene Content
Aspasia Efthimiadou,1 Nikolaos Katsenios,2 Anestis Karkanis,3 Panayiota Papastylianou,2 Vassilios Triantafyllidis,4 Ilias Travlos,2 and Dimitrios J. Bilalis2
1 Open University of Cyprus, P.O. Box 24801, 1304 Nicosia, Cyprus
2 Laboratory of Crop Production, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
3 Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Fytokou Street, N. Ionia,
38466 Magnisia, Greece
4 Department of Business Administration of Food and Agricultural Enterprises, University of Patras, Seferi Street 2,
30100 Agrinio, Greece
Correspondence should be addressed to Dimitrios J. Bilalis; bilalisdimitrios@yahoo.gr Received 3 March 2014; Revised 18 May 2014; Accepted 15 June 2014; Published 6 July 2014 Academic Editor: Ioannis Konstantinou
Copyright © 2014 Aspasia Efthimiadou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The use of magnetic field as a presowing treatment has been adopted by researchers as a new environmental friendly technique. The aim of this study was to determine the effect of magnetic field exposure on tomato seeds covering a range of parameters such as transplanting percentage, plant height, shoot diameter, number of leaves per plant, fresh weight, dry weight, number of flowers, yield, and lycopene content. Pulsed electromagnetic field was used for 0, 5, 10, and 15 minutes as a presowing treatment of tomato seeds in a field experiment for two years. Papimi device (amplitude on the order of 12.5 mT) has been used. The use of pulsed electromagnetic field as a presowing treatment was found to enhance plant growth in tomato plants at certain duration of exposure. Magnetic field treatments and especially the exposure of 10 and 15 minutes gave the best results in all measurements, except plant height and lycopene content. Yield per plant was higher in magnetic field treatments, compared to control. MF-15 treatment yield was 80.93% higher than control treatment. Lycopene content was higher in magnetic field treatments, although values showed no statistically significant differences.
1. Introduction
Magnetic and electromagnetic treatments are being used in agriculture, as a noninvasive technique, to improve the germi- nation of seeds and increase crops and yields [1]. Researchers consider that the prospect of using cheap magnetic energy to improve the properties of soil and plant growth and develop- ment may be of great practical importance [2]. Magnetic field has been found to improve food reserve utilization and help for better absorption and assimilation of nutrients by plants [3] and photosynthetic activities [4].
The choice of the investigated plants is based mainly on the importance they have. It has been found that the percent germination rates of the treated tomato seeds were accelerated about 1.1 to 2.8 times compared with that of
the untreated seed, while an inhibitory effect on germination was shown in the case of the electric field more than 12 kV/cm and the exposure time more than 60 seconds [5]. Recently, it has been reported that treated tomato seeds with magnetic field by 100 gauss for 15 minutes with magnetically treated irrigated water improved vegetative growth, increased total phosphorus content of tomato leaves and total yield, and reduced pH value in soil extraction [6]. In the vegetative stage, the treatments led to a significant increase in leaf area, leaf dry weight, and specific leaf area per plant. Also, the leaf, stem, and root relative growth rates of plants derived from magnetically treated seeds were greater than those shown by the control plants. In the generative stage, leaf area per plant and relative growth rates of fruits from plants from magnetically exposed seeds were greater than those of

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