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Achieving an ecological olive crop using legume covers:update on results after six years

AuthorsHernández, Ana Jesús; Lacasta Dutoit, Carlos ; Prieto, Nuria ; Pastor Piñeiro, Jesús
Weed covers
Soil fertility
Issue Date2004
PublisherSociedad Española de Agricultura Ecológica
CitationEcoliva Olivicultura Ecológica Actas I Conferencia Mundial sobre olivicultura Producciones y cultura
AbstractThis report presents the results of triáis performed during the transformation of an olive plantation from an agricultural perspective based on ecological principies, particularly with respect to soil nutrient preservation and interplay among chemical factors and the management systems used. The main problems associated with years of conventional tillage practices have been erosión fissures, scarce organic matter, loss of soil fertility and a lack of herbaceous vegetation. Thus, it was decided to implant and propitiate the growth of plant covers between rows of trees that would be capable of: controlling soil erosión due to their creeping nature, adapting to sandy soils and the rainfall regime of the semiarid Mediterranean climate of central Spain, fixing nitrogen and undergo autoseeding. Further requirements were an annual character, rapid growth, ease of handling and low cost. The different treatments: tillage, non-tillage, subclover, vetch and resident vegetation (weed) plant covers, were evaluated in terms of biochemical fertility as a soil regeneration Índex, plant community succession in plots with spontaneous vegetation, and olive production. Findings related to production and soil preservation conf irm the need to continué with the use of these live covers. The persistence of subclover, and increased biochemical fertility in plots with covers, along with the high coverage valúes achieved using resident legumes (16 species) all point to the technical efficiency of these plant covers as an economic method of improving the sustainability of the system.
Description10 páginas, ilustraciones y tablas estadísticas
Appears in Collections:(IRN) Comunicaciones congresos
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