Passive electroculture using copper rods does not consistently improve crop yield.
Controlled studies indicate that the low millivolt-level voltages generated by passive copper-wrapped dowels are insufficient to influence plant physiology. Observed growth gains in some root crops are likely the result of copper leaching into the soil as a micronutrient rather than electrical stimulation.
Confidence Emerging
Controlled studies indicate that the low millivolt-level voltages generated by passive copper-wrapped dowels are insufficient to influence plant physiology. Observed growth gains in some root crops are likely the result of copper leaching into the soil as a micronutrient rather than electrical stimulation.