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The biophysics of paint growth in a reversed electrostatic field; A comparison with conventional electrostatic and electrokinetic field growth responses

The biophysics of paint growth in a reversed electrostatic field; A comparison with conventional electrostatic and electrokinetic field growth responses

Int J Biometeorol 19(2): 135-146

The growth of sweet corn and bush bean plants in a reversed electrostatic field (soil positive) was investigated with reference to previous data for growth in a conventional electrostatic field (soil negative) and an electrokinetic (a.c. [alternate current]) field. Plant and leaf tip damage was observed for high potential gradients in the reversed field. Spectroscopic analyses of the damaged plant sections revealed micro-chemical activity essentially identical to that observed for conventional electrostatic and electrokinetic field growth. While the plant and leaf polarities for all 3 modes of electrification were found to be essentially consistent, the severity of leaf damage for identical field conditions was less for plants grown in the reversed electrostatic field as compared with conventional field growth. Leakage currents were also higher in the reversed field environments. It appears that plant growth responses are influenced, to a large extent, by the magnitude of active current flow. A summarization of all existing data indicated that plant growth in an electric field, regardless of mode (static or dynamic) is generally retarded at leakage currents in excess of 10-5 amp, and may be stimulated for currents of 10-8 amp. Current levels of 10-16 amp and lower appeared to have no measureable effect on the plant.

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