Currently, chemicals are widely used in plant cultivation in many countries, allowing plants to have more roots, grow faster, and increase productivity. This research aimed to study application of permanent magnets (Neodymium Magnets (NM)) to accelerate the growth of plant roots instead of using chemicals for cultivation. Pineapples were planted in liquid media under permanent magnetic flux density (B) of 1-90 mT intensity. Magnetic flux directions were arranged in two forms, either toward or ejected from the plant roots. The result showed that the number of roots of pineapples planted under the magnetic flux was 2 times greater than the control and the length of roots was also 4.5 times greater in length than those without magnetic flux. The roots exposed toward the magnetic flux had about 2 times greater number and length of roots compared to when the magnetic flux direction was ejected from the plant roots. The direction of the magnetic flux influenced the direction of plant root growth significantly.
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