(b). It should be mentioned here that in Fig. ,due to the high voltage probe, only the waveforms of 90 watts of plasma generation power are present. The discharge waveforms were in self-pulsing discharge mode which was suitable for seed treatment . The peak discharge current pulse were ranging from 0.0072-0.186 amperes with a life time of 45 micro second, approximately. The self-pulsing frequency was increased by increasing of the source voltage. The explanation of this situation is in