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Arbuscular mycorrhizal fungus in microbial activity and aggregation of a Cerrado Oxisol in crop sequence Ciência e Agrotecnologia
Vilela,Laíze Aparecida Ferreira; Saggin Júnior,Orivaldo José; Paulino,Helder Barbosa; Siqueira,José Oswaldo; Santos,Vera Lúcia da Silva; Carneiro,Marco Aurélio Carbone.
Soil structure has major influence on ecosystem sustainability and plant growth. Arbuscular mycorrhizal fungi (AMF) are an important functional group of soil microbiota, acting in the process of aggregation, especially in agroecosystems and related to the production and plant diversity. AMF are widely distributed in tropical agroecosystems and are extremely important for development of many agricultural crops. The present study evaluated the effect of inoculation with Glomus macrocarpum in different crop sequences on plant growth, microbial activity and aggregation of a Cerrado Oxisol. The study was conducted in a completely randomized design in a4 x 4 factorial scheme. Treatments consisted of four conditions of elimination and/or introduction of AMF...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbial carbon; Acid phosphatase; Mean geometric diameter; Mean weight diameter; Soil structure.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100004
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Perennial grasses for recovery of the aggregation capacity of a reconstructed soil in a coal mining area in southern Brazil Rev. Bras. Ciênc. Solo
Stumpf,Lizete; Pauletto,Eloy Antonio; Fernandes,Flavia Fontana; Suzuki,Luis Eduardo Akiyoshi Sanches; Silva,Tiago Stumpf da; Pinto,Luiz Fernando Spinelli; Lima,Claudia Liane Rodrigues de.
The construction of a soil after surface coal mining involves heavy machinery traffic during the topographic regeneration of the area, resulting in compaction of the relocated soil layers. This leads to problems with water infiltration and redistribution along the new profile, causing water erosion and consequently hampering the revegetation of the reconstructed soil. The planting of species useful in the process of soil decompaction is a promising strategy for the recovery of the soil structural quality. This study investigated the influence of different perennial grasses on the recovery of reconstructed soil aggregation in a coal mining area of the Companhia Riograndense de Mineração, located in Candiota-RS, which were planted in September/October 2007....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil construction; Macroaggregates; Microaggregates; Mean weight diameter; Cover plants.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100033
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Soil physical properties and soil organic carbon content in northeast Brazil: long-term tillage systems effects Scientia Agricola
Oliveira,Fernanda Cristina Caparelli; Ferreira,Gabriel William Dias; Souza,João Lucas Santos; Vieira,Matheus Emannuel Oliveira; Pedrotti,Alceu.
ABSTRACT Concerns about the negative effects of agriculture on soil physical quality and soil organic carbon (SOC) pools have spurred on the adoption of conservation tillage systems in tropical regions. This study aimed to evaluate the long-term impacts (16th year) of conventional (CT), minimum (MT) and no-tillage (NT) practices and different cover crops (sunn hemp and a bean/millet sequence) on soil physical properties and SOC content of a corn cultivated Ultisol in the northeast of Brazil. Soil bulk density (Bd), soil penetration resistance (SPR), soil aggregation, and total aggregate-associated carbon (C) (4-2 mm) were evaluated. Tillage practices exerted strong control on soil physical properties and total aggregate-C content but were influenced by...
Tipo: Info:eu-repo/semantics/other Palavras-chave: No-till cropping systems; Minimum-tillage; Soil bulk density; Mean weight diameter; Total aggregate-associated carbon.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000401601
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