Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon
The use of fire to prepare agricultural areas is a technique still used by small farmers in eastern Amazon. This type of management changes the dynamics of soil nutrients, especially phosphorus, which constitutes the most limiting nutrient for crop production in tropical soils. This study was carrie...
| Autor principal: | Farias, Samuel Christian Cohen |
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| Outros Autores: | Silva Júnior, Mário Lopes da, Ruivo, Maria de Lourdes Pinheiro, Rodrigues, Possidônio Guimarães, Melo, Vânia Silva de, Costa, Adriane da Rocha, Souza Júnior, João Cardoso de |
| Grau: | Artigo |
| Idioma: | eng |
| Publicado em: |
Museu Paraense Emilio Goeldi
2018
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| Acesso em linha: |
http://repositorio.museu-goeldi.br/handle/mgoeldi/1359 |
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ir-mgoeldi-1359 |
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ir-mgoeldi-13592019-07-17T18:04:25Z Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon Formas de fósforo em argissolo vermelho submetido a queima e trituração de vegetação na Amazônia oriental Farias, Samuel Christian Cohen Silva Júnior, Mário Lopes da Ruivo, Maria de Lourdes Pinheiro Rodrigues, Possidônio Guimarães Melo, Vânia Silva de Costa, Adriane da Rocha Souza Júnior, João Cardoso de shifting cultivation tropical soils phosphorus fractions organic phosphorus CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA The use of fire to prepare agricultural areas is a technique still used by small farmers in eastern Amazon. This type of management changes the dynamics of soil nutrients, especially phosphorus, which constitutes the most limiting nutrient for crop production in tropical soils. This study was carried out to evaluate changes in phosphorus forms in an Argissolo Amarelo Distrófico (Ultisol) submitted to burning and trituration of secondary forest in eastern Amazon. The evaluated systems were: slashand-burn of vegetation; slash-and-mulch of vegetation; and secondary vegetation. The labile, moderately labile, moderately recalcitrant, available and total phosphorus fractions were assessed at the soil depths of 0.00-0.05, 0.05-0.10 and 0.10-0.20 m. The results showed a predominance of soluble P in acid (moderately labile P) over other forms in all management systems. The management systems influence the content and distribution of the forms of P, where the slash-and-mulch system presented the prevalence of the labile fraction, and the slash-and-burn system contained less labile forms. The slashand-mulch system favored the accumulation of labile P and total organic P. O uso de fogo para preparar áreas agrícolas é uma técnica ainda usada por pequenos agricultores na Amazônia oriental. Esse tipo de manejo altera a dinâmica dos nutrientes do solo, principalmente o fósforo, que constitui o nutriente mais limitante para a produção agrícola em solos tropicais. Este estudo foi realizado para avaliar mudanças nas formas de fósforo em um Argissolo Amarelo Distrófico submetido a queimadas e trituração de floresta secundária no leste da Amazônia. Os sistemas avaliados foram: slashand-burn of vegetation; corte e cobertura de vegetação; e vegetação secundária. As frações de fósforo lábil, moderadamente lábil, moderadamente recalcitrante, disponível e total foram avaliadas nas profundidades de 0,00-0,05, 0,05-0,10 e 0,10-0,20 m. Os resultados mostraram uma predominância de P solúvel em ácido (moderadamente lábil P) sobre outras formas em todos os sistemas de manejo. Os sistemas de manejo influenciam o conteúdo e a distribuição das formas de P, onde o sistema slash-and-mulch apresentou a prevalência da fração lábil e o sistema de derrubada e queima continha formas menos lábeis. O sistema slashand-mulch favoreceu o acúmulo de P lábil e P orgânico total. 2018-12-21T14:29:45Z 2018-09-21 2018-12-21T14:29:45Z 2015-10-16 Artigo de Periódico 0100-0683 http://repositorio.museu-goeldi.br/handle/mgoeldi/1359 eng Revista Brasileira de Ciência do Solo Acesso Aberto application/pdf Museu Paraense Emilio Goeldi Brasil MPEG |
| institution |
Repositório Institucional - Museu Paraense Emílio Goeldi |
| collection |
RepositorioEmilioGoeldi |
| language |
eng |
| topic |
shifting cultivation tropical soils phosphorus fractions organic phosphorus CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
| spellingShingle |
shifting cultivation tropical soils phosphorus fractions organic phosphorus CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA Farias, Samuel Christian Cohen Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| topic_facet |
shifting cultivation tropical soils phosphorus fractions organic phosphorus CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
| description |
The use of fire to prepare agricultural areas is a technique still used by small farmers in eastern Amazon. This type of management changes the dynamics of soil nutrients, especially phosphorus, which constitutes the most limiting nutrient for crop production in tropical soils. This study was carried out to evaluate changes in phosphorus forms in an Argissolo Amarelo Distrófico (Ultisol) submitted to burning and trituration of secondary forest in eastern Amazon. The evaluated systems were: slashand-burn of vegetation; slash-and-mulch of vegetation; and secondary vegetation. The labile, moderately labile, moderately recalcitrant, available and total phosphorus fractions were assessed at the soil depths of 0.00-0.05, 0.05-0.10 and 0.10-0.20 m. The results showed a predominance of soluble P in acid (moderately labile P) over other forms in all management systems. The management systems influence the content and distribution of the forms of P, where the slash-and-mulch system presented the prevalence of the labile fraction, and the slash-and-burn system contained less labile forms. The slashand-mulch system favored the accumulation of labile P and total organic P. |
| format |
Artigo |
| author |
Farias, Samuel Christian Cohen |
| author2 |
Silva Júnior, Mário Lopes da Ruivo, Maria de Lourdes Pinheiro Rodrigues, Possidônio Guimarães Melo, Vânia Silva de Costa, Adriane da Rocha Souza Júnior, João Cardoso de |
| author2Str |
Silva Júnior, Mário Lopes da Ruivo, Maria de Lourdes Pinheiro Rodrigues, Possidônio Guimarães Melo, Vânia Silva de Costa, Adriane da Rocha Souza Júnior, João Cardoso de |
| title |
Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| title_short |
Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| title_full |
Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| title_fullStr |
Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| title_full_unstemmed |
Phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern Amazon |
| title_sort |
phosphorus forms in ultisol submitted to burning and trituration of vegetation in eastern amazon |
| publisher |
Museu Paraense Emilio Goeldi |
| publishDate |
2018 |
| url |
http://repositorio.museu-goeldi.br/handle/mgoeldi/1359 |
| _version_ |
1787135590839353344 |
| score |
11.755432 |