Electric Conductive Properties of Weed Plants – Objects of High Voltage Pulse Exposure

In the case of electroimpulse cultivation, the main purpose of the treatment is irreversible damage to plant tissues of weeds and their subsequent death. On clogged massifs, even at processing under favorable conditions, there can be found plants of various biological species, of different development periods, various spatial configurations, etc. As the main characteristic at studying the electrical conductive properties of the plant tissue of weeds, the dependence of the total resistance of this tissue (or its active component) on the frequency of the measuring current is used, which in biophysics is called the dispersion of impedance or its components in frequency. For the present research, the electrical resistivity of the studied areas was used as the indicator that most fully reflects the influence of their geometric parameters. The analysis of the behavior and changes in the specific electrical resistivity of the internal structures of an intact plant tissue of various weed types on the frequency of the measuring current made it possible to state: 1) the dispersion curves of the specific electrical resistivity of the weed plant tissue by frequency are the same for: various weed types; different periods of their development; the above ground stem part of weeds, the part with the root neck and root system; 2) the obtained results indicate that the highest specific resistance is observed in the internal structures of the tissues of the weed root system and the lowest are in the aerial parts; 3) in the process of development of weeds, plant tissues of all parts increase the values of their specific electrical resistance