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Provedor de dados:  Scientia Agricola
País:  Brazil
Título:  Liming and electrochemical attributes of an oxisol under no tillage
Autores:  Alleoni,Luís Reynaldo Ferracciú
Zambrosi,Fernando César Bachiega
Moreira,Silvino Guimarães
Prochnow,Luís Ignácio
Data:  2003-02-01
Ano:  2003
Palavras-chave:  PSSE
Organic matter
Electric potential
Resumo:  No tillage areas are increasing in Brazil especially due to a general improvement in water and nutrient availability to plants. Few results have reported the effect of liming on soil electrochemical attributes in areas under the no tillage system. This study was conducted to evaluate the effect of liming (at the soil surface and incorporated to 0.2 m) on soil pH, point of zero salt effect (PZSE), electric potential, soil organic matter (SOM), and yield of soybean and corn, cultivated on an Typic Hapludox, submitted 12 years to no tillage. Rates of lime of 1/3, 2/3 and the total amount calculated for soil to reach a base saturation of 70 % (2.5 ton ha-1) were applied on soil surface. The full rate was also applied and incorporated to the 0.2 m depth. The effect of liming on PZSE was low due, most likely, to the low lime rates used in the experiment. SOM contents decreased as rates of applied lime increased, with the highest variation occurring between the control and the full rate of lime when incorporated. No clear effect of the lower values of SOM was observed in the PZSE values. The lack of interaction among lime rates and soil depth contributed for this situation, once the effect of SOM was diluted when considering the values of PZSE as the average for the soil layers (0-0.1; 0.1-0.2 and 0.2-0.3 m). There was no variation in the soil electric potential and in the yield of soybean and corn as a function of lime rates.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação:  10.1590/S0103-90162003000100018
Formato:  text/html
Fonte:  Scientia Agricola v.60 n.1 2003
Direitos:  info:eu-repo/semantics/openAccess

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