Artigo

Transformations of nitrogen fertilizers in brazilian amazonia soils

We have compared the effect of15N urea and15N ammonium sulfate on the process of stabilization in organic matter and mineralization in three soils of central Amazonia, classified as Oxisol, Ultisol, and low-humic gley. During the first month of incubation in the laboratory, the nitrogen fertilizer a...

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Autor principal: Alfaia, Sonia Sena
Outros Autores: Jacquin, Fernand, Guiraud, Gérard
Grau: Artigo
Idioma: English
Publicado em: Arid Soil Research and Rehabilitation 2020
Assuntos:
Nitrogen Fertilizer
Organic Matter
Oxisol
Quaternary
Tertiary
Ultisol
Brazil, Amazonia
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/19452
id oai:repositorio:1-19452
recordtype dspace
spelling oai:repositorio:1-19452 Transformations of nitrogen fertilizers in brazilian amazonia soils Alfaia, Sonia Sena Jacquin, Fernand Guiraud, Gérard Nitrogen Fertilizer Organic Matter Oxisol Quaternary Tertiary Ultisol Brazil, Amazonia We have compared the effect of15N urea and15N ammonium sulfate on the process of stabilization in organic matter and mineralization in three soils of central Amazonia, classified as Oxisol, Ultisol, and low-humic gley. During the first month of incubation in the laboratory, the nitrogen fertilizer amendment slightly increased mineralization of organic nitrogen in both acid soils (Oxisol and Ultisol). In these soils, 60% of the nitrogen added was recovered as NH4* after 2 months incubation, while in the low- humic gley soil, 50% of the applied nitrogen was nitrified. The incorporation of15N fertilizer in the organic matter of the latter soil was higher (30%) than in the acid soils. Incorporation in the acid soils, though low, was more important for N derived from urea than ammonium sulfate. For the Oxisol, nitrogen incorporation in organic matter values varied between 12% and 19%, and 7-9% for the Ultisol. © 1995 Taylor & Francis Group, LLC. 2020-06-15T22:08:46Z 2020-06-15T22:08:46Z 1995 Artigo https://repositorio.inpa.gov.br/handle/1/19452 10.1080/15324989509385902 en Volume 9, Número 3, Pags. 335-340 Restrito Arid Soil Research and Rehabilitation
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Nitrogen Fertilizer
Organic Matter
Oxisol
Quaternary
Tertiary
Ultisol
Brazil, Amazonia
spellingShingle Nitrogen Fertilizer
Organic Matter
Oxisol
Quaternary
Tertiary
Ultisol
Brazil, Amazonia
Alfaia, Sonia Sena
Transformations of nitrogen fertilizers in brazilian amazonia soils
topic_facet Nitrogen Fertilizer
Organic Matter
Oxisol
Quaternary
Tertiary
Ultisol
Brazil, Amazonia
description We have compared the effect of15N urea and15N ammonium sulfate on the process of stabilization in organic matter and mineralization in three soils of central Amazonia, classified as Oxisol, Ultisol, and low-humic gley. During the first month of incubation in the laboratory, the nitrogen fertilizer amendment slightly increased mineralization of organic nitrogen in both acid soils (Oxisol and Ultisol). In these soils, 60% of the nitrogen added was recovered as NH4* after 2 months incubation, while in the low- humic gley soil, 50% of the applied nitrogen was nitrified. The incorporation of15N fertilizer in the organic matter of the latter soil was higher (30%) than in the acid soils. Incorporation in the acid soils, though low, was more important for N derived from urea than ammonium sulfate. For the Oxisol, nitrogen incorporation in organic matter values varied between 12% and 19%, and 7-9% for the Ultisol. © 1995 Taylor & Francis Group, LLC.
format Artigo
author Alfaia, Sonia Sena
author2 Jacquin, Fernand
Guiraud, Gérard
author2Str Jacquin, Fernand
Guiraud, Gérard
title Transformations of nitrogen fertilizers in brazilian amazonia soils
title_short Transformations of nitrogen fertilizers in brazilian amazonia soils
title_full Transformations of nitrogen fertilizers in brazilian amazonia soils
title_fullStr Transformations of nitrogen fertilizers in brazilian amazonia soils
title_full_unstemmed Transformations of nitrogen fertilizers in brazilian amazonia soils
title_sort transformations of nitrogen fertilizers in brazilian amazonia soils
publisher Arid Soil Research and Rehabilitation
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/19452
_version_ 1787141792436584448
score 11.653393

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