Nitrogen balance in soil under eucalyptus plantations
نویسندگان
چکیده
منابع مشابه
Nitrogen-Fixing Bacteria in Eucalyptus globulus Plantations
Eucalypt cultivation is an important economic activity worldwide. In Portugal, Eucalyptus globulus plantations account for one-third of the total forested area. The nutritional requirements of this crop have been well studied, and nitrogen (N) is one of the most important elements required for vegetal growth. N dynamics in soils are influenced by microorganisms, such as diazotrophic bacteria (D...
متن کاملLabile and Non-Labile Fractions of Phosphorus and Its Transformations in Soil under Eucalyptus Plantations, Brazil
Phosphorus (P) is the main limiting nutritional factor in the cultivation of Eucalyptus in Brazil. Despite this, little is known about the P fractions and dynamics in Eucalyptus soils in tropical regions. The aims of this study were (1) to evaluate the distribution of labile and non-labile fractions of P in soil in 10 sites of Eucalyptus in the state of São Paulo, Brazil and (2) to determine th...
متن کاملFactors influencing decline in soil pH in Hawaiian Eucalyptus and Albizia plantations
Soil pH declined from 5.9 to 5.0 in 8 years beneath plantations of Eucalyptus saligna (Sm.) in Hawaii. In stands of Albizia falcataria, (L.) Fosberg, the soil pH change was more dramatic, declining from 5.9 to 4.6. We measured several components of soil acidity beneath four mixtures of the two tree species to gain insight on the processes responsible for the decline in soil pH. These components...
متن کاملAssessing nitrogen fixation in mixed- and single-species plantations of Eucalyptus globulus and Acacia mearnsii.
Mixtures of Eucalyptus globulus Labill. and Acacia mearnsii de Wildeman are twice as productive as E. globulus monocultures growing on the same site in East Gippsland, Victoria, Australia, possibly because of increased nitrogen (N) availability owing to N(2) fixation by A. mearnsii. To investigate whether N(2) fixation by A. mearnsii could account for the mixed-species growth responses, we asse...
متن کاملUptake of inorganic and amino acid nitrogen from soil by Eucalyptus regnans and Eucalyptus pauciflora seedlings.
This study examined whether two species of Eucalyptus can take up the amino acid glycine from soil and compared the uptake rate of glycine with the uptake rates of nitrate and ammonium. Ectomycorrhizal seedlings of two ecologically disparate species were studied: Eucalyptus regnans F. Muell., a fast-growing forest tree from low altitudes; and Eucalyptus pauciflora Sieber ex Spreng., a slow-grow...
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ژورنال
عنوان ژورنال: Revista Brasileira de Ciência do Solo
سال: 2012
ISSN: 0100-0683
DOI: 10.1590/s0100-06832012000400018