Medical/biological study (experimental study)

Effect of presowing magnetic treatment on properties of pea med./bio.

By: Iqbal M, Haq ZU, Ahmad MR

Published in: Int Agrophys 2012; 26 (1): 23-31

Aim of study (acc. to author)

To investigate the effects of exposure to magnetic fields on pea seedling growth and chlorophyll contents.

Background/further details

Exposure was applied with three different magnetic flux densities (60 mT, 120 mT, and 180 mT) and three different durations (5 min, 10 min, and 15 min). Non-exposed seeds were used as control group.

Endpoint

seedling growth and chlorophyll contents

Exposure

- 50 Hz
- 50/60 Hz
- magnetic field

Exposure	Parameters
Exposure 1: 50 Hz Exposure duration: continuous for 5, 10 or 15 min	magnetic flux density: 60 mT minimum magnetic flux density: 120 mT magnetic flux density: 180 mT maximum

Exposure 1

Main characteristics

Frequency	50 Hz
Type	magnetic field
Waveform	sinusoidal
Exposure duration	continuous for 5, 10 or 15 min

Exposure setup

Exposure source	coil(s)
Setup	cylindrical coils: 4,000 turns of 0.42 mm copper wire; each coil was wound 10 cm apart on an iron bar (40 cm x 3.5 cm); iron bars were placed one above the other, their ends held by metallic supports; petri dish was placed in the air gap between the two bars
Sham exposure	A sham exposure was conducted.

Parameters

Measurand	Value	Type	Method	Mass	Remarks
magnetic flux density	60 mT	minimum	measured	-	-
magnetic flux density	120 mT	-	measured	-	-
magnetic flux density	180 mT	maximum	measured	-	-

Reference articles

De Souza A et al. (2006): Pre-sowing magnetic treatments of tomato seeds increase the growth and yield of plants

Exposed system:

plant
pea (Pisum sativum)

Methods Endpoint/measurement parameters/methodology

seedling growth (shoot and root length, dry mass, and fresh mass), chlorophyll contents (spectrophotometry)

Investigated system:

shoot, root, homogenate
investigation on living organism

Time of investigation:

after exposure

Main outcome of study (acc. to author)

The exposure to a magnetic field significantly increased the seedling growth compared to the controls. Exposed seedlings did not show a significantly increase in chlorophyll contents. Among the various combinations of magnetic flux density and duration, 120 mT for 15 min and 180 mT for 10 min exposure yielded superior results.
The authors concluded that the exposure to a magnetic field could be used to enhance the growth in peas.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

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