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Organic C distribution and N mineralization in soil of oak woodlands with impro...

Gómez-Rey, Maria Xesús; Garcês, Ana; Madeira, Manuel

Cork oak woodlands in Portugal are a multipurpose agroforestry system occurring in areas mostly degraded by former cereal crops and overgrazing. The objective of this study was to evaluate the effect of scattered cork oak trees (Quercus suber L.) on soil quality, considering two land use systems: unmanaged pastures and improved pastures. Soil samples were collected in a square grid around scattered cork oak tre...

Data: 2011   |   Origem: Repositório da UTL

Efeito da cinza de biomassa na dinâmica do C e N do solo de uma plantação de Pi...

Gómez-Rey, Maria Xesus; Madeira, Manuel; Coutinho, João; Vasconcelos, Ernesto

Effects of wood ash (loose and pelleted) on chemical properties and microbial activity in an Arenosol from a Pinus pinaster plantation were assessed through laboratory incubation. Wood ash was applied at a rate of 0, 4 and 8 g kg-1 soil both alone or together with N. Loose ash significantly increased pH values and extractable nutrients from the soil. Net nitrification was stimulated by it application. Amounts o...

Data: 2010   |   Origem: Repositório da UTL

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Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia