Organic matter, water infiltration and tomographic images of latosol in reclamation under different managements/Materia organica, infiltracao e imagens tomograficas de latossolo em recuperacao sob diferentes tipos de manejo

In this study the objective was to evaluate the effects of different managements on reclamation of an Oxisol for seven years. The treatments were: two controls, A--Savannah vegetation; B--exposed soil; besides the treatment, C--Area with only tree species Astronium fraxinifolium (GA); D--A. fraxinif...

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Veröffentlicht in:Revista brasileira de engenharia agrícola e ambiental 2015-06, p.574
Hauptverfasser: Marchini, Debora C, Ling, Tseng C, Alves, Marlene C, Crestana, Silvio, Filho, Sebastiao N. Souto, de Arruda, Otton G
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Sprache:spa
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Zusammenfassung:In this study the objective was to evaluate the effects of different managements on reclamation of an Oxisol for seven years. The treatments were: two controls, A--Savannah vegetation; B--exposed soil; besides the treatment, C--Area with only tree species Astronium fraxinifolium (GA); D--A. fraxinifolium + Raphanus sativus until 2005, replaced by the following Crotalaria juncea (GA + C); E--A. fraxinifolium + Canavalia ensiformis (GA + FP); F--A. fraxinifolium+sewage sludge + Brachiaria decumbens (GA + LE +B). There was no convergence with respect to the behavior of soil quality indicator in recovery for seven years, studied in this work; treatment A. fraxinifolium+sewage sludge + Brachiaria decumbens provided the best response to soil organic matter content; the treatments used for soil reclamation had similar water infiltration; the treatments with A. fraxinifolium + Crotalaria juncea; A. fraxinifolium+Canavalia ensiformis and A. fraxinifolium + sewage sludge + Brachiaria decumbens in soil tomographic images were those with the best conditions of soil structure, the recovery process has reached the soil layer of 0-10 cm. Key words: soil microtomography soil structure sewage sludge green manure Propos-se, neste trabalho, verificar os efeitos de manejos em Latossolo em recuperacao ha sete anos. Os tratamentos estudados foram: dois controles, A--Vegetacao natural de Cerrado; B--Solo exposto; alem dos tratamentos, C--Area apenas com especie arborea Goncalo-Alves (GA) (Astroniumfraxinifolium); D--Goncalo-Alves + Nabo forrageiro (Raphanus sativus) ate 2005, substituido pela crotalaria (Crotalaria juncea) (GA + C); E--Goncalo-Alves + Feijao-de-Porco (Canavalia ensiformis) (GA + FP); F--Goncalo-Alves + Lodo de esgoto (60 t [ha.sup.-1]) + Brachiaria decumbens (GA + LE +B). Nao houve convergencia com relacao aos indicadores da qualidade do solo em recuperacao ha sete anos; o tratamento GA + Lodo de esgoto + Brachiaria decumbens foi o que melhor respondeu quanto ao teor de materia organica do solo; os tratamentos usados para recuperacao do solo tiveram comportamento semelhante relacionado ao da infiltracao de agua; os tratamentos com GA + Crotalaria, GA + Feijao-de-Porco e GA + Lodo de esgoto + Brachiaria decumbens nas imagens tomograficas foram os que apresentaram melhores condicoes da estrutura do solo; a recuperacao atingiu a camada do solo de 0-10 cm. Palavras-chave: microtomografia do solo estmtura do solo lodo de esgoto adubo verde
ISSN:1415-4366
DOI:10.1590/1807-1929/agriambi.v19n6p574-580