DEVICE FOR SCARING AWAY CROP PESTS IN SOIL Russian patent published in 1994 - IPC

FIELD: agricultural engineering. SUBSTANCE: device comprises electrodes 1 in the form of horizontal conductors combined in two groups with alternating conductors of different groups, the group outputs being connected across modulator 2 with low-voltage source 3. Electrodes 1 may be disposed at a depth equal to half the maximum depth of root system of plants to be protected. Bare output terminals of electrodes 1 are arranged on the ends opposite to connections with voltage source 3. The electrodes are laid fanwise, diverging from the ends connected to voltage source. The frequency of main harmonica of electric pulse source is selected within a range of 6-20 Hz. EFFECT: improved design. 4 cl, 2 dwg