Answers are grounded in this paper and cite their sources.
Low strength magnetic fields, 6.36 and 32.25 gauss, were found to have no effect, with one questionable exception, on the circadian rhythm and growth rate of Neurospora crassa. This was true whether the fields were continuous, pulsed 20 minutes daily, or on a 12: 12, on-off cycle.
No takes yet. Share an insight, caveat, or question.
Bitz et al. (1974) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: