Field estimation of biological N-fixation by five tropical tree species using two N isotope dilution methods.
No hay miniatura disponible
Fecha
Título de la revista
ISSN de la revista
Título del volumen
Editor
Resumen
Descripción
One aim of the SHIFT project "Secondary Forests and Fallow Vegetation in the Agricultural Landscape of the Eastern Amazon Region (ENV 25/2)” is to shorten the fallow period by planting fast-growing leguminous trees. Therefore, the screening and identification of suitable leguminous trees for improved fallows in term of biological N2-fixation (BNF) was an important objective of the present work. Previous studies in the main project area showed that an improved fallow system with Acacia mangium planted at a spacing of 1 m x 1 m accumulated about 56 t ha-1 aboveground biomass within two years, which is about twice as much as the above-ground biomass production by Clitorea racemosa (27 t ha-1) at a spacing of 2 m x 2 m or by the spontaneous natural fallow (24 t ha-1).
Editado por Reinhard Lieberei, Helmut Bianchi, Vera Boehm, Christoph Reisdorff. Publicado também em GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS: ARCHIEMENTS AND PROPECTS OF COOPERATIVE RESEARCH, 2000, Hamburg. Program and abstracts. Hamburg: SHIFT: MADAM: WAVES, 2000. p. 93.
Editado por Reinhard Lieberei, Helmut Bianchi, Vera Boehm, Christoph Reisdorff. Publicado também em GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS: ARCHIEMENTS AND PROPECTS OF COOPERATIVE RESEARCH, 2000, Hamburg. Program and abstracts. Hamburg: SHIFT: MADAM: WAVES, 2000. p. 93.
Palabras clave
Clitorea rasemosa, Tipitamba, Biomassa, Cultivo Migratório, Fertilidade do Solo, Fixação de Nitrogênio, Leguminosa, Pousio, Sistema de Cultivo, Uso da Terra, Acacia mangium