Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5303
Título: Indicadores de qualidade do solo em pomares de pereira "Rocha" - enrelvamento permanente versus mobilização
Autor: Rodrigues, Ana Raquel Martinho da Silva Felizardo
Orientador: Madeira, Manuel Valeriano
Palavras-chave: Rocha pear
soil quality indicators
soil organic matter
soil management
cover crop
tillage
Data de Defesa: 2012
Editora: ISA/UTL
Citação: Rodrigues, A.R.M.S.F. - Indicadores de qualidade do solo em pomares de pereira "Rocha" - enrelvamento permanente versus mobilização. Lisboa: ISA, 2012, 107 p.
Resumo: Different management systems induce modifications on ecosystems functioning, changing soil quality. In the context of growing concern for sustainability issues it becomes crucial to use physical, chemical and biological indicators able to identify effects on soil properties and processes. Such is the case of the Portuguese ‘Rocha’ pear (Pyrus communis L.) groves which represent an important economical value and specificity, mainly in the Centro NUT II region. Four orchards subjected to different management systems were selected (NT - no tillage with permanent natural cover crop; CT+E - tillage with manure incorporation; CT1 and CT2 - conventional tillage). Bulk density, exchangeable Ca2+, Mg2+, Na+ and K+, pH, extractable P and K, total organic C and N, non humified and hot water soluble C, microbial biomass C and N, C and N mineralization, spontaneous vegetation biomass and biodiversity were determined. The NT orchard showed better quality in the upper layer of soil between tree rows. The CT+E system showed the greater increase in organic matter, but lower potential to nutrient recycling and supply. CT1 and CT2 presented a tendency to organic matter decline and deterioration of related properties. Long term experiments are needed to confirm these trends
Descrição: Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/5303
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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