期刊
出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/03601234.2013.742398
关键词
Olea europaea L; olive oil mill wastewater; land spreading; soil microbiological properties; microbial community structure; phospholipids fatty acid
资金
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- Secretaria de Ciencia y Tecnologia de la Universidad Nacional de Cordoba (SeCyT-UNC)
- Instituto Nacional de Tecnologia Agropecuaria (INTA)
- Ministerio de Ciencia y Tecnologia de la provincial de Cordoba (Argentina)
The purpose of this work was to investigate the effects of spreading olive oil mill wastewater (OMWW) on soil biochemical parameters and olive production in an organically managed olive orchard. The experiment was carried out with three different doses of OMWW (80, 160 and 500m3 ha1) and a control (untreated soil). Three samplings were done at 10, 30 and 90days after the administration of the byproduct. OMWW application differentially modified the biochemical properties of the soil analyzed. Organic matter, organic carbon, total nitrogen and extractable phosphorus soil contents increased proportionally with each increasing dose. The values of these parameters decreased gradually with time. Total microbial activity was altered and the OMWW 500m3 ha1 treatment proved to be the most active when compared with the other applied doses. OMWW agricultural application also modified the structure of soil microbial communities, particularly affecting Gram positive and negative bacteria, while fungal biomass did not show consistent changes. Although there was a salinity increase in the treated soil, especially at the highest dose, the productive parameters analyzed (fruit and oil tree1) were not affected. In light of the obtained results, we consider that low dose of OMWW could be considered an alternative farming practice for semiarid regions.
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