The Effect of -sterilization of biofertilizer's carrier on bacterial inoculants survival

Tejima, Kohei*; Yokoyama, Tadashi*; Sato, Katsuya; Takeda, Kiyoko; Narumi, Issei

Biofertilizer is a substance that holds beneficial microorganisms for plant growth in the carrier such as peat, perlite, charcoal and soil. To use biofertilizer more efficiently, it is necessary to keep the amount of viable inoculants in the biofertilizer for a definite period of time. -irradiation is expected to sterilize the carrier materials without changes in physical and chemical properties. In this study, to demonstrate the effectiveness of -sterilization, the survivals of inoculants were monitored for the nitrogen-fixing bacteria strain TUAT1 and sp. strain MAFF210364.