Investigations on effects of high frequency radiation on plants
Remarks
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Notice Dr. Balmori's articles on this topic: „THE
EFFECTS OF MICROWAVES ON THE TREES AND OTHER PLANTS“ and „¿Pueden
afectar las microondas pulsadas emitidas por las antenas de telefonía a los árboles
y otros vegetales? “.
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Some of the articles listed below are published in volume 180, issue 1 of the
journal „Science
of the Total Environment“ and deal with the Skrunda Radio Location Station in
Latvia. This radar system, which began operation in 1971, was part of an early
warning chain of stations located along the western edge of the former Soviet
Union. It emitted pulse radio-frequency electromagnetic radiation in the 156
– 162 MHz frequency range with pulse duration 0.8 ms, duty cycle 50. The mean
power of each of the two radars was 50 kW. Maximum RMS electric field intensities
measured at 2 km distance and at 1.5 m above ground level between May 1992 and
April 1993 ranged from 0.2 to 2 V/m (
Kalnins et al. 1996).
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Not yet published:
○
Götz et al.,
FGF-Newsletter 3/99: Three trees of age 18 at the beginning of the experiment
(one beech and two spruce) had been partly (one half exposed, the other one shielded)
exposed to radar radiation with 9.445 GHz frequency for three years. Comparisons
of morphological and physiological parameters did not reveal any differences
between the exposed and unexposed halfs.
Funding: „Stiftung Wald in Not“;
○ Lerchl et al., BEMS 22nd
annual meeting, Munich, Germany [2000] (3,27 MB), pages 160-161: the planned
experiments involving young conifers had not yet been performed at that point of time;
corn seedlings showed a significantly and reproducibly accelerated growth rate when
exposed to a field of root mean strength 131 V/m.
Funding: Ministry of Science of Nordrhein-Westfalen; University of Münster;
○ Urech et al. –
a project of the Swiss research foundation „Forschungsstiftung Mobilkommunikation“;
"We conclude that above certain field strength the MCN numbers can be elevated, however until now these elevations can't be found in regular manner. The reasons for the inconsistent reaction of the Trad-MCN bioassay on the tested electromagnetic fields are unknown. [...] The results of the GSM and UMTS studies will be published in Bioelectromagnetics as soon as the measurements of temperature and SAR-values will be performed (see above)."
Original Studies
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Clastogenic effects of radiofrequency radiations on chromosomes of Tradescantia
Haider T, Knasmueller S, Kundi M,
Haider M, Mutat Res. 1994 Jun;324(1-2):65-8.
PubMed EMF-Portal
○ Effects
of microwave and radio frequency electromagnetic fields on lichens
Funding: Telecom PTT;
Urech M, Eicher B, Siegenthaler J,
Bioelectromagnetics. 1996;17(4):327-34.
PubMed EMF-Portal
○ Long-term exposure of young spruce and beech trees to 2450-MHz microwave radiation
Exponential temperature of sucrose solution samples exposed within the plots
during 35 days, versus PFD at the individual exposure locations. The solid line
represents the regression line (regression coefficient = 0.907). Although
the degree of warming is dependent on geometry and composition of exposed
objects, similar temperature increases can be expected at least in parts of
the trees exposed to the highest PFDs.
Both figures are from the original publication and were reprinted with permission
from Elsevier.
Schmutz P, Siegenthaler J, Stäger
C, Tarjan D, Bucher JB, Sci. Total Environ. 1996;180(1):43-48.
Abstract
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Does the Skrunda Radio Location Station diminish the radial growth of pine trees?
Funding:
Latvian Science Council;
Balodis V, Brumelis G, Kalviskis
K, Nikodemus O, Tjarve D, Znotina V, Sci. Total Environ. 1996;180(1):57-64.
Abstract
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Response of Pinus sylvestris L. needles to electromagnetic fields. Cytological and ultrastructural aspects
Selga T, Selga M, Sci.
Total Environ. 1996;180(1):65-73.
Abstract
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The effect of electromagnetic radiation from the Skrunda Radio Location Station on Spirodela polyrhiza (L.) Schleiden cultures
Magone I, Sci. Total Environ.
1996;180(1):75-80.
Abstract EMF-Portal
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Sims study of the calcium-deprivation step
related to epidermal meristem production induced in flax by cold shock or
radiation from a GSM telephone
Funding: Ministère de la
Recherche, France;
Tafforeau M, Verdus
M-C, Norris V, White G, Demarty M, Thellier M, Ripoll C, J Trace Microprobe Techn.
2002;20(4):611-623.
Abstract
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Plant sensitivity to low intensity 105 GHz electromagnetic radiation
Tafforeau M, Verdus
MC, Norris V, White GJ, Cole M, Demarty M, Thellier M, Ripoll C, Bioelectromagnetics.
2004 Sep;25(6):403-7.
PubMed EMF-Portal
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Nonthermal microwave radiations affect the hypersensitive response of tobacco to tobacco mosaic virus
Betti L, Trebbi G, Lazzarato L, Brizzi
M, Calzoni GL, Marinelli F, Nani D, Borghini F, J Altern Complement Med. 2004
Dec;10(6):947-57.
PubMed
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Influence of 400, 900, and 1900 MHz
electromagnetic fields on Lemna minor growth and peroxidase activity
Funding: The Ministry of
Science and Technology of the Republic of Croatia;
Tkalec M, Malaric K, Pevalek-Kozlina
B, Bioelectromagnetics. 2005 Apr;26(3):185-93.
PubMed EMF-Portal
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A preliminary study on ultra high frequency electromagnetic fields effect on black locust chlorophylls
Sandu DD, Goiceanu IC, Ispas A, Creanga I, Miclaus
S, Creanga DE, Acta Biol Hung. 2005;56(1-2):109-17.
PubMed
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The influence of a low- and high-frequency electromagnetic fields on seeds
Kalinin LG, Boshkova IL, Panchenko GI, Kolomiichuk SG, Biofizika. 2005 Mar-Apr;50(2):361-6, Article in Russian
PubMed
