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| Paulucio,Vanderlan de Oliveira; Silva,Cristiane Figueira da; Martins,Marco Antônio; Pereira,Marcos Gervasio; Schiavo,Jolimar Antonio; Rodrigues,Luciana Aparecida. |
| ABSTRACT Mining activities generally affect soil quality, degrading it and creating the need for consistent environmental recovery efforts. This study evaluates the influence of monospecific and mixed stands of Sesbania virgata (S) and Eucalyptus camaldulensis (E) on the chemical properties and microbial activity of the soil in a degraded area by clay extraction in the northern part of the state of Rio de Janeiro, Brazil. Four treatments (100S:100 % Sesbania , 100E: 00 % Eucalyptus , 50S:50E: 50 % Sesbania + 50 % Eucalyptus , and DASV: a degraded area with spontaneous vegetation) were established according to a randomized complete block design with three replicates. Samples were collected in the 0.00-0.10 m layer in the rainy season (March) and the dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil respiration; Fluorescein diacetate hydrolysis; Clay extraction. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100416 |
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| Silva,Andréa Scaramal da; Colozzi Filho,Arnaldo; Nakatani,André Shigueyoshi; Alves,Sérgio José; Andrade,Diva de Souza; Guimarães,Maria de Fátima. |
| Integrated crop-livestock systems (ICLs) are a viable strategy for the recovery and maintenance of soil characteristics. In the present study, an ICL experiment was conducted by the Instituto Agronômico do Paraná in the municipality of Xambre, Parana (PR), Brazil, to evaluate the effects of various grazing intensities. The objective of the present study was to quantify the levels of microbial biomass carbon (MBC) and soil enzymatic activity in an ICL of soybean (summer) and Brachiaria ruziziensis (winter), with B. ruziziensis subjected to various grazing intensities. Treatments consisted of varying pasture heights and grazing intensities (GI): 10, 20, 30, and 40 cm (GI-10, GI-20, GI-30, and GI-40, respectively) and a no grazing (NG) control. The microbial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial carbon; Microbial respiration; Acid phosphatase; Β-glucosidase; Arylsuphatase; Fluorescein diacetate hydrolysis; Carbono microbiano; Respiração microbiana; Fosfatase ácida; Β-glucosidase; Arilsulfatase; Hidrólise do diacetato de fluoresceína. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100040 |
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