This chapter describes how electric current is the main electrotechnological working tool in crop farming. It can initiate the plant growth and development or it can suppress, damage and destroy them. The stimulating electrotechnology example involves the electrical stimulation of ligneous plants allowing grafting survivability and growth. Alternatively, the suppressing and damaging current influence is vividly illustrated by the electro-impulse of sunflower and tobacco plants for pre-harvest processing. The demonstrative example of plants' electric destruction is weeds control using electro-impulse technology. The electrotechnologies effect on nature with key points' of usage and issues, alongside their technological and economic efficiency benefits are considered in the chapter.

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Drying of tobacco leaves and stems is a high energy intensive process. Pulsed electric field treatment can be applied to decrease significant energy requirements. An analysis of the electrical circuits of the equipment for pulsed electric field treatment of plants has been accomplished and an electric circuit for longitudinal PEF equipment to treat tobacco leaves and stems with a buffer capacitor and a rectifier for high voltage has been proposed. A method for determination of the electric circuit parameters and for power supply to the equipment is given. Results of the calculation of the two electrical circuits are also presented.