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Pest management science v.74 no.8, 2018년, pp.1892 - 1902  

Effect of management of organic wastes on inactivation of Brassica nigra and Fusarium oxysporum f.sp. lactucae using soil biosolarization

Fernández‐Bayo, Jesus Dionisio (Department of Food Science and Technology, University of California, Davis, CA, USA ) ; Randall, Tara E (Department of Biological and Agricultural Engineering, University of California, Davis, CA, USA ) ; Harrold, Duff R (Department of Biological and Agricultural Engineering, University of California, Davis, CA, USA ) ; Achmon, Yigal (Department of Food Science and Technology, University of California, Davis, CA, USA ) ; Hestmark, Kelley V (Department of Biological and Agricultural Engineering, University of California, Davis, CA, USA ) ; Su, Joey (Department of Food Science and Technology, University of California, Davis, CA, USA ) ; Dahlquist‐Willard, Ruth M (University of California Cooperative Extension, Fresno County, CA, USA ) ; Gordon, Thomas R (Department of Plant Pathology, University of California, Davis, CA, USA ) ; Stapleton, James J ; VanderGheynst, Jean S ; Simmons, Christopher W ;
  • 초록  

    Abstract BACKGROUND Soil biosolarization is a promising alternative to conventional fumigation. Volatile fatty acids (VFAs) produced in the soil through fermentation of amended organic matter can affect pest inactivation during biosolarization. The objective was to determine how soil amended with organic wastes that were partially stabilized through either composting or anaerobic digestion affected the inactivation of Brassica nigra (BN; a weed) and Fusarium oxysporum f. sp. lactucae (FOL; a phytopathogenic fungus). RESULTS The mortality of BN seeds in the biosolarized soil was 12% higher than in the solarized soil, although this difference was not significant. However, a significant correlation between BN mortality and VFA accumulation was observed. The number of FOL colony‐forming units (CFU) in solarized samples at 5 cm was 34 CFU g –1 of soil, whereas in the biosolarized samples levels were below the limit of quantification. At 15 cm, these levels were 100 CFU g –1 for solarized samples and –1 of soil for the biosolarized samples. Amendment addition positively affected the organic matter and potassium content after the solarization process. CONCLUSION The organic waste stabilization method can impact downstream biosolarization performance and final pest inactivation levels. This study suggests that organic waste management practices can be leveraged to improve pest control and soil quality. ⓒ 2018 Society of Chemical Industry


  • 주제어

    solarization .   pest control .   compost .   digestates .   volatile fatty acids .   soil quality.  

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