Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116334
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dc.contributor.authorABDALLA FILHO, A. L.eng
dc.contributor.authorCOSTA JUNIOR, G. T.eng
dc.contributor.authorLIMA, P. de M. T.eng
dc.contributor.authorSOLTANGHEISI, A.eng
dc.contributor.authorABDALLA, A. L.eng
dc.contributor.authorGHINI, R.eng
dc.contributor.authorPICCOLO, M. de C.eng
dc.date.accessioned2019-12-09T18:16:26Z-
dc.date.available2019-12-09T18:16:26Z-
dc.date.created2019-12-09
dc.date.issued2019
dc.identifier.citationPeerJ, v. 7, article e5932, 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1116334-
dc.descriptionAbstract: Brazil has the largest commercial herd of ruminants with approximately 211 million head, representing 15% of world?s beef production, in an area of 170 million hectares of grasslands, mostly cultivated with Brachiaria spp. Although nutrient reduction due to increased atmospheric carbon dioxide (CO2) concentration has already been verified in important crops, studies evaluating its effects on fiber fractions and elemental composition of this grass genus are still scarce. Therefore, a better understanding of the effects of elevated CO2 on forage quality can elucidate the interaction between forage and livestock production and possible adaptations for a climate change scenario. The objective of this study was to evaluate the effects of contrasting atmospheric CO2 concentrations on biomass production, morphological characteristics, fiber fractions, and elemental composition of Brachiaria decumbens (cv. Basilisk). A total of 12 octagonal rings with 10 m diameter were distributed in a seven-ha coffee plantation and inside each of them, two plots of 0.25 m2 were seeded with B. decumbens (cv. Basilisk) in a free air carbon dioxide enrichment facility. Six rings were kept under natural conditions (?390 ?mol mol?1 CO2; Control) and other six under pure CO2 flux to achieve a higher concentration (?550 ?mol mol?1 CO2; Elevated CO2). After 30 months under contrasting atmospheric CO2 concentration, grass samples were collected, and then splitted into two portions: in the first, whole forage was kept intact and in the second portion, the leaf, true stem, inflorescence and senescence fractions were manually separated to determine their proportions (%). All samples were then analyzed to determine the fiber fractions (NDF, hemicellulose, ADF, cellulose, and Lignin), carbon (C), nitrogen (N), potassium (K), calcium (Ca), sulfur (S), phosphorus (P), iron (Fe), and manganese (Mn) contents and N isotopic composition.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleFiber fractions, multielemental and isotopic composition of a tropical C4 grass grown under elevated atmospheric carbon dioxide.eng
dc.typeArtigo de periódicoeng
dc.date.updated2019-12-09T18:16:26Z
dc.subject.thesagroGramaeng
dc.subject.thesagroDióxido de Carbonoeng
dc.subject.thesagroMudança Climáticaeng
dc.subject.nalthesaurusGrasseseng
dc.subject.nalthesaurusFree air carbon dioxide enrichmenteng
dc.subject.nalthesaurusCarbon dioxideeng
dc.subject.nalthesaurusC4 plantseng
riaa.ainfo.id1116334eng
riaa.ainfo.lastupdate2019-12-09
dc.identifier.doihttps://doi.org/10.7717/peerj.5932eng
dc.contributor.institutionADIBE LUIZ ABDALLA FILHO, CENA-USPeng
dc.contributor.institutionGEOVANI T COSTA JUNIOR, CENA-USPeng
dc.contributor.institutionPAULO DE MELLO TAVARES LIMA, CENA-USPeng
dc.contributor.institutionAMIN SOLTANGHEISI, CENA-USPeng
dc.contributor.institutionADIBE LUIZ ABDALLA, CENA-USPeng
dc.contributor.institutionRAQUEL GHINI, CNPMAeng
dc.contributor.institutionMARISA DE CASSI PICCOLO, CENA-USP.eng
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