Preliminary observations on the control of algal growth by magnetic treatment of water

Cladophora glomerata (L.) Kz. was grown in Jaworski's algal culture medium and exposed to a fluctuating electromagnetic field which induced development of dark coloration, increased density and brittleness.After 4 weeks exposure, algae were unable to grow when transferred to unexposed culture medium. In addition, algal growth in culture medium exposed to a fluctuating magnetic field before the algae were introduced, was inhibited significantly compared with an appropriate control after 4 days, indicating a transfer of effect from the brief exposure to a magnetic field of less than 1 second to the 4-day period when growth was active. [ABSTRACT FROM AUTHOR]