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| Carmo,Davi Lopes do; Silva,Carlos Alberto; Lima,José Maria de; Pinheiro,Gabriela Lúcia. |
| ABSTRACT Soil solution samplers may have the same working principle, but they differ in relation to chemical and physical characteristics, cost and handling, and these aspects exert influence on the chemical composition of the soil solution obtained. This study was carried out to evaluate, over time, the chemical composition of solutions extracted by Suolo Acqua, with the hydrophilic membrane (HM) as a standard, using soils with contrasting characteristics, and to determine the relationship between electrical conductivity (EC) and concentration of ions and pH of soil solution samples. This study was carried out under laboratory conditions, using three soils samples with different clay and organic matter (OM) contents. Soil solution contents of F−, Cl−,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrical conductivity; Water soluble carbon; Soil liquid phase; Soil solution extraction methods. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100405 |
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| Carmo,Davi Lopes do; Lima,Laís Botelho de; Silva,Carlos Alberto. |
| ABSTRACT The composition of organic waste (OW) and its effect on soil processes may change soil fertility and electrical conductivity (EC). The side effects of waste use in crop fertilization are poorly understood for Brazilian soils. This study examined the effect of the addition of 15 different organic wastes to Oxisols and a Neosol on pH, base saturation, EC, cation exchange capacity (CEC at pH 7), and the availability of Al, macro (P, K, Ca2+, Mg2+ and S) and micronutrients (B, Fe2+, Mn2+, Cu2+ and Zn2+). Soil samples (150 g) were treated with chicken, pig, horse, cattle, and quail manures, sewage sludge 1 and 2, eucalyptus sawdust, plant substrate, coconut fiber, pine bark, coffee husk, peat, limed compost, and biochar. Wastes were added considering a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Manures; Liming value; Micronutrients; Nutrient cycling; Sewage sludge. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100532 |
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| Carmo,Davi Lopes do; Nannetti,Dulcimara Carvalho; Dias Júnior,Moacir de Souza; Espírito Santo,Djalma José do; Nannetti,Alex Nogueira; Lacerda,Tales Machado. |
| Em razão de diferentes tipos de manejo utilizados na cafeicultura, o presente trabalho teve como objetivo quantificar as alterações de alguns atributos físicos de um Latossolo Vermelho-Amarelo cultivado com cafeeiro, após quatro anos da implantação, no Sul de Minas Gerais, sob três sistemas de manejo em comparação à mata nativa. Foram avaliados os seguintes sistemas de manejo: lavoura cafeeira com mecanização (CCM), lavoura cafeeira sem mecanização (CSM), lavoura cafeeira sob sistema adensado (CA) e mata nativa (MN), utilizada como referência. Foram coletadas amostras indeformadas, com o auxílio de um amostrador de Uhland e anéis de alumínio de 6,35 cm de diâmetro por 2,54 cm de altura, nas profundidades de 0-3 e 15-18 cm, sendo esta última a camada de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estrutura do solo; Sustentabilidade; Mecanização. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300033 |
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