ElectroTherapy Patents ~ US Patents, Frequency Analysis, article, &c. (See Rexresearch.com for more details)
The Lahovsky research is related to thhe reseaerch of Nathn Stubblefield. Gerry Vassilatos did much research in this area, especially related to ground radio and telluric currents. Borderlands Journal also had numerous articles on telluric currents. Those currents could explain communication via the ground and also the anomalous continuation of telegraph signals in the old days, even though the wires had been cut. Telluric currents could be the carrier waves that would enable radionic devices to work and get rid of insects and other pests that were unable to tolerate the EM pulses, waves, fields carrried by the telluric currents. Theoretically, you may be able to put the stakes at various points on the perimeter and the interior of a field and keep the pests and diseases away.
References:
1. World Science Database, detailed profile of this scientist:
http://www.worldsci.org/php/index.php?tab0=Scientists&tab1=Scientists&tab2=Display&id=1953