Comparison of microbial activity in some Brazilian soils by microcalorimetric and respirometric methods

dc.creatorCritter, SAM
dc.creatorFreitas, SS
dc.creatorAiroldi, C
dc.date2004
dc.dateFEB 9
dc.date2014-11-16T06:21:54Z
dc.date2015-11-26T17:23:34Z
dc.date2014-11-16T06:21:54Z
dc.date2015-11-26T17:23:34Z
dc.date.accessioned2018-03-29T00:10:53Z
dc.date.available2018-03-29T00:10:53Z
dc.identifierThermochimica Acta. Elsevier Science Bv, v. 410, n. 41671, n. 35, n. 46, 2004.
dc.identifier0040-6031
dc.identifierWOS:000188291900005
dc.identifier10.1016/S0040-6031(03)00371-X
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/56267
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/56267
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/56267
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1283861
dc.descriptionThe microbial activity in a Rhodic eutrudox (R), a Typic eutrudox (V) and a Quartzipsamment (Q) was monitored by respirometric and calorimetric methods. CO2 evolution was monitored for 98 days by titrimetry and conductimetry for control amended samples (A) with 25% of cattle manure (E), municipal refuse compost (L), earthworm casts (H) or 1.25 kg ha(-1) of trifluralin (T). Average values of all treatments through respiration at the end of the incubation period were 5.24 +/- 0.34, 6.13 +/- 0.31 and 6.50 +/- 0.33, in Mg CO2 g(-1) soil, for R, V and Q, respectively, by titrimetry and 8.89 +/- 0.44, 10.41 +/- 0.54 and 10.41 +/- 0.52, in Mg CO2 g(-1) soil, for R, V and Q, respectively, for conductimetry. Excellent correlation (r = 1.00) between titrimetry and conductimetry was observed. The decreasing order for respiration was E, H, L and T. After each incubation time, the conductimetric values were higher than those for titrimetry, for all treatments of these Brazilian soils. Average values of the exothermic thermal effect were: 0.58 +/- 0.02, 0.60 +/- 0.02 and 0.67 +/- 0.01 kJ g(-1) soil, for R, V and Q, respectively, for 103 days. A significant correlation coefficient of 0.91 and P < 0.0001 between calorimetric and respirometric values over 98 days was observed. Based on the obtained calorimetric results, it can be proposed that this technique should be as a useful analytical method for determining the microbial activity in soils. (C) 2003 Elsevier B.V. All rights reserved.
dc.description410
dc.description41671
dc.description35
dc.description46
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationThermochimica Acta
dc.relationThermochim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectBrazilian soils
dc.subjectmicrocalorimetry
dc.subjectrespirometry
dc.subjectmicrobial activity
dc.subjectorganic materials
dc.subjectOrganic-matter
dc.subjectGlucose Degradation
dc.subjectTropical Soils
dc.subjectRed Latosol
dc.subjectBiomass
dc.subjectCalorimetry
dc.subjectBiodegradation
dc.subjectConsumption
dc.subjectTillage
dc.subjectForest
dc.titleComparison of microbial activity in some Brazilian soils by microcalorimetric and respirometric methods
dc.typeArtículos de revistas


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