Study type: Medical/biological study (experimental study)

The effects of inverter magnetic fields on early seed germination of mung beans. med./bio.

Published in: Bioelectromagnetics 2008; 29 (8): 649-657

Aim of study (acc. to author)

To assess the effects of magnetic fields on the early seed germination of plants using mung beans.

Background/further details

For each test frequency there were three replicate experiments conducted using fresh seeds prepared in the same manner: 20 beans of almost the same weight (0.08 g) and similar appearance. 10 beans were grown under a magnetic field and the other 10 were placed 250 mm away from the coil (control group).



Exposure Parameters
Exposure 1: 10–60 Hz
Exposure duration: continuous for 8 h ,12 h and 24 h

Exposure 1

Main characteristics
Frequency 10–60 Hz
Exposure duration continuous for 8 h ,12 h and 24 h
Exposure setup
Exposure source
Setup 3 coils with 60 turns on an iron core with 110 mm diameter and an air gap of 12 mm; samples placed inside the coil
Measurand Value Type Method Mass Remarks
magnetic flux density 6.38 µT - calculated - at 10 Hz
magnetic flux density 13.1 µT - calculated - at 20 Hz
magnetic flux density 16.55 µT - calculated - at 30 Hz
magnetic flux density 18.7 µT - calculated - at 40 Hz
magnetic flux density 19.33 µT - calculated - at 50 Hz
magnetic flux density 16.2 µT - calculated - at 60 Hz

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The results indicate that the 20 or 60 Hz magnetic fields had an enhancing effect on the early growth of mung beans. The magnetic fields of other frequencies (30, 40 and 50 Hz) have an inhibitory effect, especially at 50 Hz. The effect caused by 10 Hz magnetic field was not siginificant on the germination of mung beans.

Study character:

Study funded by

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