2009
DOI: 10.4025/actasciagron.v31i3.687
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Biomassa microbiana e estoques de C e N do solo em diferentes sistemas de manejo, no Cerrado do Estado do Piauí

Abstract: RESUMO. O objetivo do trabalho foi verificar os efeitos de diferentes sistemas de manejo sobre a biomassa microbiana e os estoques totais de carbono orgânico e nitrogênio em um Latossolo Amarelo. Os sistemas de manejos avaliados foram: plantio direto (PD), preparo convencional (PC), além de uma área recém-desmatada (ARD) e uma com vegetação nativa (AVN). As amostras de solo foram coletadas nas profundidades de 0-5, 5-10 e 10-20 cm. Nessas amostras, foram determinados os teores e estoques totais de C e N, a res… Show more

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Cited by 13 publications
(4 citation statements)
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“…However, Pereira et al (2010) found that in no-tillage there was a 15% increase in total organic carbon compared to conventional planting at a depth of up to 25 cm. Similar results were also found by Matias et al (2009) in Cerrado areas. Research results have also shown that soils under eucalyptus plantations can increase C and N stocks when adequately managed (Tchienkoua & Zeach, 2004).…”
Section: Introductionsupporting
confidence: 89%
“…However, Pereira et al (2010) found that in no-tillage there was a 15% increase in total organic carbon compared to conventional planting at a depth of up to 25 cm. Similar results were also found by Matias et al (2009) in Cerrado areas. Research results have also shown that soils under eucalyptus plantations can increase C and N stocks when adequately managed (Tchienkoua & Zeach, 2004).…”
Section: Introductionsupporting
confidence: 89%
“…In all systems and depths, qCO2 values were foundlower than 1.00, results in which differ from those observed in the SPC, with those found by Matias et al (2009), in which he evaluated the microbial biomass of the soil in different management systems in the Cerrado of the state of Piauí, he found values of qCO2 greater than 1.00 in conventional planting systems, and less than 1.00 in native cerrado and no-till area corroborating the results obtained in the present study in which the qCO2 of these systems were less than 1.00.…”
contrasting
confidence: 90%
“…The presence of higher qCO2 in some systems may mean rapid transformation of organic waste into nutrients for plants or may be indicative of stress on microbial biomass by soil disturbance, mainly by the transit of agricultural machinery and implements during soil 10 harvesting and preparation activities (Tu et al, 2006). According to Matias et al (2009) repairing the damage caused by these disturbances in the soil requires diverting energy from growth and reproduction to the cellular maintenance of the microorganisms, with this during stress on microbial biomass, there will be directing more energy towards cellular maintenance, instead of growth, so that a proportion of carbon from the biomass will be lost as CO2.…”
mentioning
confidence: 99%
“…2016 DOI: 10.1590/S0100-204X2016000900053 os microrganismos que se encontram muito ativos e sujeitos a transformações no solo. Pode-se, assim, inferir que solos que exibem valores menores de qMIC podem expressar ocorrência de perda de C e redução de sua dinâmica no solo (De-Polli & Pimentel, 2005;Sampaio et al, 2008;Matias et al, 2009).…”
Section: ) ------------------(Dag Kg -1 ) ------------------unclassified