Weed seed inactivation in soil mesocosms via biosolarization with mature compost and tomato processing waste amendments
| Autor: | Dlinka G. McCurry, Jesús D. Fernández-Bayo, Duff R. Harrold, Yigal Achmon, Joey Su, Jean S. VanderGheynst, Ruth M. Dahlquist-Willard, James J. Stapleton, Christopher W. Simmons, Katie Hernandez |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Hot Temperature Soil acidification Amendment Fumigation Plant Weeds engineering.material complex mixtures 01 natural sciences Soil Solanum lycopersicum Waste Management Organic matter chemistry.chemical_classification Compost Fatty Acids fungi Temperature food and beverages 04 agricultural and veterinary sciences General Medicine Hydrogen-Ion Concentration Green waste chemistry Agronomy Insect Science Seeds Soil water Sunlight 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Volatilization Weed Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Pest Management Science. 73:862-873 |
| ISSN: | 1526-4998 1526-498X |
| Popis: | BACKGROUND Biosolarization is a fumigation alternative that combines passive solar heating with amendment-driven soil microbial activity to temporarily create antagonistic soil conditions, such as elevated temperature and acidity, that can inactivate weed seeds and other pest propagules. The aim of this study was to use a mesocosm-based field trial to assess soil heating, pH, volatile fatty acid accumulation and weed seed inactivation during biosolarization. RESULTS Biosolarization for 8 days using 2% mature green waste compost and 2 or 5% tomato processing residues in the soil resulted in accumulation of volatile fatty acids in the soil, particularly acetic acid, and >95% inactivation of Brassica nigra and Solanum nigrum seeds. Inactivation kinetics data showed that near complete weed seed inactivation in soil was achieved within the first 5 days of biosolarization. This was significantly greater than the inactivation achieved in control soils that were solar heated without amendment or were amended but not solar heated. CONCLUSION The composition and concentration of organic matter amendments in soil significantly affected volatile fatty acid accumulation at various soil depths during biosolarization. Combining solar heating with organic matter amendment resulted in accelerated weed seed inactivation compared with either approach alone. © 2016 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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