Inactivation ofEscherichia coliin soil by solarization

Autor: Daisuke Ueno, Takashi Someya, Motoki Nishihara, Kei Matsuura, Shengjin Wu, Yoshie Kawasaki, Koichi Inoue, Akitoshi Yokoyama, Tomohiro Koga
Rok vydání: 2009
Předmět:
Zdroj: Soil Science and Plant Nutrition. 55:258-263
ISSN: 1747-0765
0038-0768
Popis: Contamination of agricultural soil by fecal pathogenic bacteria poses a potential risk of infection to humans. For the biosafety control of field soil, soil solarization in an upland field was examined to determine the efficiency of solarization on the inactivation of Escherichia coli inoculated into soil as a model microorganism for human pathogenic bacteria. Soil solarization, carried out by sprinkling water and covering the soil surface with thin plastic sheets, greatly increased the soil temperature. The daily average temperature of the solarized soil was 4–10°C higher than that of the non-solarized soil and fluctuated between 31 and 38°C. The daily highest temperature reached more than 40°C for 8 days in total in the solarized soil during the second and third weeks of the experiment. Escherichia coli in the solarized soil became undetectable (
Databáze: OpenAIRE