title: Application of compost of two-phase olive mill waste on olive grove: effects on soil, olive fruit and olive oil quality.
abstract: Composting is a method for preparing organic fertilizers that represents a suitable management option for the recycling of two-phase olive mill waste (TPOMW) in agriculture. Four different composts were prepared by mixing TPOMW with different agro-industrial by-products (olive pruning, sheep manure and horse manure), which were used either as bulking agents or as N sources. The mature composts were added during six consecutive years to a typical "Picual" olive tree grove in the Jaén province (Spain). The effects of compost addition on soil characteristics, crop yield and nutritional status and also the quality of the olive oil were evaluated at the end of the experiment and compared to a control treated only with mineral fertilization. The most important effects on soil characteristics included a significant increase in the availability of N, P, K and an increase of soil organic matter content. The application of TPOMW compost produced a significant increase in olive oil content in the fruit. The compost amended plots had a 15% higher olive oil content than those treatment with inorganic fertilization. These organics amendments maintained the composition and quality of the olive oil.
authors.affiliation: Centro 'Venta del Llano' del Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Agroalimentaria y de la Producción Ecológica, Mengíbar, Jaén, Spain. Electronic address: antonia.fernandez.he@juntadeandalucia.es.
authors.forename: Antonia
authors.initials: A
authors.lastname: Fernández-Hernández
authors.affiliation: Department of Soil and Water Conservation and Organic Waste Management, CEBAS - CSIC, Murcia, Spain. Electronic address: aroig@cebas.csic.es.
authors.forename: Asunción
authors.initials: A
authors.lastname: Roig
authors.affiliation: Department of Soil and Water Conservation and Organic Waste Management, CEBAS - CSIC, Murcia, Spain.
authors.forename: Nuria
authors.initials: N
authors.lastname: Serramiá
authors.affiliation: Centro 'Venta del Llano' del Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Agroalimentaria y de la Producción Ecológica, Mengíbar, Jaén, Spain. Electronic address: concepcion.garciaortiz@juntadeandalucia.es.
authors.forename: Concepción García-Ortiz
authors.initials: CG
authors.lastname: Civantos
authors.affiliation: Department of Soil and Water Conservation and Organic Waste Management, CEBAS - CSIC, Murcia, Spain. Electronic address: monedero@cebas.csic.es.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Sánchez-Monedero
mesh_terms: D000818:Animals; D005308:Fertilizers / Q000032:analysis*; D005638:Fruit / Q000737:chemistry; D006736:Horses; D007220:Industrial Waste / Q000032:analysis*; D008372:Manure; D031658:Olea / Q000254:growth & development / Q000502:physiology*; D000069463:Olive Oil; D010938:Plant Oils / Q000032:analysis; D012621:Seasons; D012756:Sheep; D012987:Soil / Q000737:chemistry*; D013030:Spain; D018505:Waste Management
chemical_list: D005308:Fertilizers; D007220:Industrial Waste; D008372:Manure; D000069463:Olive Oil; D010938:Plant Oils; D012987:Soil
keywords: Composting; Fruit quality; Olive grove; Olive oil; Two phase olive mill waste “alperujo”