Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/3558
Título: Efeito da cinza de biomassa na dinâmica do C e N do solo de uma plantação de Pinus pinaster
Outros títulos: Wood ash effects on C and N dynamics of a soil from a Pinus pinaster plantation
Autor: Gómez-Rey, Maria Xesus
Madeira, Manuel
Coutinho, João
Vasconcelos, Ernesto
Palavras-chave: basal respiration
microbial biomass
N mineralization
loose ash
pelleted ash
Data: 2010
Editora: Sociedade Portuguesa de Ciências Agrárias
Citação: "Revista de Ciências Agrárias". ISSN 0871-018X. 33:2 (2010) 134-146
Resumo: 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 of microbial biomass C were lower in soils with loose ash than in the control. Basal respiration was not affected by treatments. Effects increased with the increment of applied ash and when applied together with N. Application of pelleted ash produced smaller changes in soil chemical characteristics, net nitrification and C dynamic. Results suggest that, in N limited soils, wood ash should be applied in the pelleted form because changes in chemical soil properties are slower and the potential loss of N is much less as compared to the loose ash. Pelleted ash should be applied together with N fertilizer to improve soil N availability.
Peer review: yes
URI: http://hdl.handle.net/10400.5/3558
ISSN: 0871-018X
Aparece nas colecções:DQAA - Artigos de Revistas

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