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Changes in soil acidity and organic carbon in a sandy typic hapludalf after medium-term pig-slurry and deep-litter application 90
Brunetto,Gustavo; Comin,Jucinei José; Schmitt,Djalma Eugênio; Guardini,Renato; Mezzari,Célito Pescador; Oliveira,Bruno Salvador; Moraes,Marcel Pires de; Gatiboni,Luciano Colpo; Lovato,Paulo Emilio; Ceretta,Carlos Alberto.
Successive applications of liquid swine waste to the soil can increase the contents of total organic carbon and nutrients and change acidity-related soil chemical properties. However, little information is available on the effects of swine waste application in solid form, as of swine deep-litter. The objective of this study was to evaluate alterations of organic carbon and acidity-related properties of a soil after eight years of pig slurry and deep-litter application. In the eighth year of a field experiment established in Braço do Norte, Santa Catarina (SC) on a sandy Typic Hapludalf samples were taken (layers 0-2.5; 2.5-5; 5-10; 10-15; 15-20 and 20-30 cm) from unfertilized plots and plots with pig slurry or deep-litter applications, providing the simple...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Manure; Water pH; Base saturation; Aluminum saturation; No tillage.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500026
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Electrochemical attributes of water from Cerrado wetlands (Veredas), Triângulo Mineiro region, Brazil 124
Nascimento,Diogo Costa; Berbert,Carolina Prado; Ribeiro,Bruno Teixeira.
ABSTRACT Veredas are wetlands typically found in the Brazilian Cerrado playing important environmental functions. The hydromorphic conditions control important processes and reactions occurring in these environments. The objective of this study was to assess the pH, redox potential (Eh), and electrolytic conductivity (EC) of water from five veredas located in the Triângulo Mineiro region, nearby Uberlândia and Uberaba, Minas Gerais State, Brazil. The pH and EC of water samples (in triplicate) collected in different positions (upper, middle and bottom) of the selected wetlands were monitored monthly from September 2014 to September 2015. Eh was monitored in an incubation experiment using soil samples from the superficial layer (0-20 cm) and subsurface...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water pH; Redox potential; Hydromorphic environment.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100011
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Growth of silver catfish ( Rhamdia quelen ) exposed to acidic pH at different humic acid levels 65
Costa,Silvio Teixeira da; Sutili,Fernando Jonas; Gressler,Luciane Tourem; Loebens,Luíza; Colpo,Carine Vargas; Lazzari,Rafael; Baldisserotto,Bernardo.
ABSTRACT: Humic substances are organic compounds that possess high molecular weight and are formed by the decomposition of plant materials. Humic substances comprise humic acids, fulvic acids and humin. Humic acids (HA) have shown to be able to provide some protection to biological membranes of fish in water with low pH, replacing the protective action of Ca2+. Thus, this studyaimed to observe growth of silver catfish ( Rhamdia quelen ) juveniles exposed to pHs 5.5 and 6.5 and to different levels of HA: 0, 10, 25 and 50mg L-1. Results showed that, irrespective of pH, HA was highly detrimental to silver catfish growth, since the higher the concentration of HA, the lower the weight gain and feed intake, resulting in lower biomass and lower specific growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Humic substance; Water pH; Fish growth; Organic carbon.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601094
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Soil chemical properties related to acidity under successive pig slurry application 90
Lourenzi,Cledimar Rogério; Ceretta,Carlos Alberto; Silva,Leandro Souza da; Trentin,Gustavo; Girotto,Eduardo; Lorensini,Felipe; Tiecher,Tadeu Luis; Brunetto,Gustavo.
Pig slurry application as soil manure can alter the chemical properties of the soil and affect its acidity, modifying the environment for crop growth and development. The objective of this study was to evaluate the chemical properties related to soil acidity subjected to successive applications of pig slurry. The experiment was conducted in May 2000, in an experimental area of the Federal University of Santa Maria (UFSM) under no-tillage and lasted until January 2008. Nineteen surface applications of 0, 20, 40, and 80 m³ ha-1 of pig slurry were performed, during a period of 100 months and the soil sampled in the end (layers 0-2, 2-4, 4-6, 6-8, 8-10, 10-12, 12-14, 14-16, 16-18, 18-20, 20-25, 25-30, 30-35, 35-40, 40-50 and 50-60 cm). The application of pig...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water pH; Base saturation; Al saturation; Soil organic matter; Organic waste.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500037
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