Effect of VHF and High-Amplitude Alternating EMF on the Growth of Bacteria (Xanthomonas Campestris)

Abstract

Bacteria (Xanthomonas campestris var. Vasicatoria), which cause black spot disease on the leaves and fruits of tomato (Lycopersicon esculentum)were exposed to alternating electromagnetic field (EMF). The bacteria were exposed to EMF for 14 days using very-high-frequency (VHF) electromagnetic field (EMF) (1 MHz) and very high amplitude (2 × 10⁻⁴ T; sine wave). The VHF EMF was generated by a function generator and controlled magnetic field enclosure. Exposure of bacteria to VHF EMF at 2 × 10⁴ T for 14 days significantly promoted their growth.