Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/615
Título: Influência de aditivos em solos contaminados com arsénio na produção de hortícolas
Autor: Esteves, Cláudia Sofia Heliodoro
Orientador: Madeira, Ana Carla Andrade
Abreu, Maria Manuela Reis
Palavras-chave: lycopersicon esculentum
tomate
salsa
italian parsley
soil contamination
contaminação do solo
aditivos
soil amendments
arsenic
arsénio
toxicidade
toxicity
Data de Defesa: 2009
Resumo: The effects of different amendments on a naturally contaminated soil with arsenic were studied. Several soil characteristics were analysed and the behaviour of two vegetables (tomato and Italian parsley), in terms of arsenic absorption and translocation, was examined. The results indicate differences associated with the availability of arsenic in the soil in the presence of amendments: iron oxides (3 g kg-1) tend to reduce arsenic availability and organic matter and calcium phosphates seem to induce the opposite effect. Though both plant species have been affected by arsenic toxicity, the response relatively to plant development and growth and to arsenic translocation was different. Tomato plants presented greater growth when organic matter was used as amendment in terms of height, leaf length, relative chlorophyll content, dry weight and fruit production. By the contrary, the Italian parsley growth presented the best growth when calcium phosphate was added to the contaminated soil. Though none of the plant species was considered as arsenic accumulators, the Italian parsley tends to translocate more arsenic to their leaves than tomato plants.
Descrição: Mestrado em Engenharia do Ambiente - Tecnologias Ambientais - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/615
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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Dissertação_Cláudia Esteves.pdf3,15 MBAdobe PDFVer/Abrir


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