Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern Amazon
ABSTRACT 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: slash-and-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 slash-and-mulch system favored the accumulation of labile P and total organic P.
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Sociedade Brasileira de Ciência do Solo
2016
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oai:scielo:S0100-068320160001005062016-05-23Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern AmazonFarias,Samuel Christian CohenSilva Júnior,Mário Lopes daRuivo,Maria de Lourdes PinheiroRodrigues,Possidônio GuimarãesMelo,Vânia Silva deCosta,Adriane da RochaSouza Júnior,João Cardoso de shifting cultivation tropical soils phosphorus fractions organic phosphorus ABSTRACT 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: slash-and-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 slash-and-mulch system favored the accumulation of labile P and total organic P.info:eu-repo/semantics/openAccessSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo v.40 20162016-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100506en10.1590/18069657rbcs20150198 |
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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 |
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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 Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern Amazon |
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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 |
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Farias,Samuel Christian Cohen |
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 |
description |
ABSTRACT 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: slash-and-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 slash-and-mulch system favored the accumulation of labile P and total organic P. |
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Sociedade Brasileira de Ciência do Solo |
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2016 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100506 |
work_keys_str_mv |
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