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Título: | Dissipation and effects of tricyclazole on soil microbial communities and rice growth as affected by amendment with alperujo compost |
Autor: | García-Jaramillo, Manuel CSIC ORCID; Redondo Gómez, S.; Barcia Piedras, J.M.; Aguilar Portero, M.; Jurado, Valme CSIC ORCID; Hermosín, M.C. CSIC ORCID; Cox, Lucía CSIC ORCID | Palabras clave: | Chlorophyll fluorescence DGGE Organic amendment Rice Tricyclazole monitoring Yield rate |
Fecha de publicación: | 15-abr-2016 | Editor: | Elsevier | Citación: | Science of the Total Environment (550): 637-644 (2016) | Resumen: | The presence of pesticides in surface and groundwater has grown considerably in the last decades as a consequence of the intensive farming activity. Several studies have shown the benefits of using organic amendments to prevent losses of pesticides from runoff or leaching. A particular soil from the Guadalquivir valley was placed in open air ponds and amended at 1 or 2% (w/w) with alperujo compost (AC), a byproduct from the olive oil industry. Tricyclazole dissipation, rice growth and microbial diversity were monitored along an entire rice growing season. An increase in the net photosynthetic rate of Oryza sativa plants grown in the ponds with AC was observed. These plants produced between 1100 and 1300 kg ha-1 more rice than plants from the unamended ponds. No significant differences were observed in tricyclazole dissipation, monitored for a month in soil, surface and drainage water, between the amended and unamended ponds. The structure and diversity of bacteria and fungi communities were also studied by the use of the polymerase chain reaction denaturing gel electrophoresis (PCR-DGGE) from DNA extracted directly from soil samples. The banding pattern was similar for all treatments, although the density of bands varied throughout the time. Apparently, tricyclazole did not affect the structure and diversity of bacteria and fungi communities, and this was attributed to its low bioavailability. Rice cultivation under paddy field conditions may be more efficient under the effects of this compost, due to its positive effects on soil properties, rice yield, and soil microbial diversity. | Descripción: | 8 páginas.-- 6 figuras.-- 3 tablas.-- 49 referencias.-- Supplementary data to this article can be found online at http://dx.doi.org/10.1016/j.scitotenv.2016.01.174 | Versión del editor: | http://dx.doi.org/10.1016/j.scitotenv.2016.01.174 | URI: | http://hdl.handle.net/10261/129587 | DOI: | 10.1016/j.scitotenv.2016.01.174 | ISSN: | 0048-9697 |
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