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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
17/12/2020 |
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Data da última atualização: |
17/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATOSO, S. C. G.; WADT, P. G. S.; SOUZA JÚNIOR, V. S. de S.; PÉREZ, X. L. O. |
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Afiliação: |
Stella Cristiani Gonçalves Matoso, Federal Institute of Education Science and Technology of Rondônia / Biodiversity and Biotechnology Graduate Program – BIONORTE, Federal University of Rondônia; PAULO GUILHERME SALVADOR WADT, CPAF-RO; Valdomiro Severino de Souza Júnior, Federal Rural University of Pernambuco; Xosé Lois Otero Pérez, CRETUS Institute, Department of Soil Science and Agricultural Chemistry, University of Santiago de Compostela. |
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Título: |
Variation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Waste Management & Research, v. 38, n. 9, 0734242X2093518, June 2020. |
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DOI: |
10.1177/0734242X20935180 |
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Idioma: |
Inglês |
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Conteúdo: |
The research and application of biochars enriched with minerals have increased in recent years; however, the mineral fraction used consists of specific minerals, such as clay minerals and synthesized compounds. In this work, the effects of adding two specific soil types (sandy and clayey) to rice and coffee husks in order to generate biochars via pyrolysis was investigated. Chemical, physical?chemical, thermal, spectroscopic and crystallographic analyses were conducted on the produced biochars. The study confirmed that the presence of mineral soils during the pyrolysis process increases the yield, C retention ratio, and specific surface area. It also decreases the pH, cation exchange capacity (CEC), nutrient content, and carbon-to-nitrogen ratio of biochars. However, the biochars produced by mixing coffee husks and mineral soils still demonstrate a capacity to increase the pH and the CEC of tropical soils. In addition, increased C retention demonstrates an environmental benefit of this biochar production method. Biomass pyrolysis combined with clayey soil results in a biochar with a higher degree of aromaticity and higher thermal stability when compared to biomass pyrolysis alone. These characteristics give the biochar a recalcitrant character, without the necessity for steps related to the synthesis of specific mineral compounds, which reduces the economic and energy cost of the process. |
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Palavras-Chave: |
Biocarvão; Coffee husk; Pirólise; Rice husk. |
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Thesagro: |
Biomassa; Casca de Arroz; Casca de Café; Corretivo; Resíduo Agrícola; Solo. |
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Thesaurus Nal: |
Biochar; Biomass; Crop residues; Pyrolysis; Soil amendments. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219346/1/cpafro-18490.pdf
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Marc: |
LEADER 02423naa a2200349 a 4500
001 2128325
005 2020-12-17
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1177/0734242X20935180$2DOI
100 1 $aMATOSO, S. C. G.
245 $aVariation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application.$h[electronic resource]
260 $c2020
520 $aThe research and application of biochars enriched with minerals have increased in recent years; however, the mineral fraction used consists of specific minerals, such as clay minerals and synthesized compounds. In this work, the effects of adding two specific soil types (sandy and clayey) to rice and coffee husks in order to generate biochars via pyrolysis was investigated. Chemical, physical?chemical, thermal, spectroscopic and crystallographic analyses were conducted on the produced biochars. The study confirmed that the presence of mineral soils during the pyrolysis process increases the yield, C retention ratio, and specific surface area. It also decreases the pH, cation exchange capacity (CEC), nutrient content, and carbon-to-nitrogen ratio of biochars. However, the biochars produced by mixing coffee husks and mineral soils still demonstrate a capacity to increase the pH and the CEC of tropical soils. In addition, increased C retention demonstrates an environmental benefit of this biochar production method. Biomass pyrolysis combined with clayey soil results in a biochar with a higher degree of aromaticity and higher thermal stability when compared to biomass pyrolysis alone. These characteristics give the biochar a recalcitrant character, without the necessity for steps related to the synthesis of specific mineral compounds, which reduces the economic and energy cost of the process.
650 $aBiochar
650 $aBiomass
650 $aCrop residues
650 $aPyrolysis
650 $aSoil amendments
650 $aBiomassa
650 $aCasca de Arroz
650 $aCasca de Café
650 $aCorretivo
650 $aResíduo Agrícola
650 $aSolo
653 $aBiocarvão
653 $aCoffee husk
653 $aPirólise
653 $aRice husk
700 1 $aWADT, P. G. S.
700 1 $aSOUZA JÚNIOR, V. S. de S.
700 1 $aPÉREZ, X. L. O.
773 $tWaste Management & Research$gv. 38, n. 9, 0734242X2093518, June 2020.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/01/2016 |
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Data da última atualização: |
27/01/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
YOKOO, M. J. I.; LÔBO, R. B.; MAGNABOSCO, C. de U.; ROSA, G. J. M.; FORNI, S.; SAINZ, R. D.; ALBUQUERQUE, L. G. |
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Afiliação: |
MARCOS JUN ITI YOKOO, CPPSUL; R. B. Lôbo, Associação Nacional de Criadores e Pesquisadores; CLAUDIO DE ULHOA MAGNABOSCO, CPAC; G. J. M. Rosa, University of Wisconsin; S. Forni, Dow AgroSciences; R. D. Sainz, University of California; L. G. Albuquerque, UNESP. |
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Título: |
Genetic correlation of traits measured by ultrasound at yearling and 18 months of age in Nellore beef cattle. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Livestock Science, v. 180, p. 34-40, Oct. 2015. |
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DOI: |
10.1016/j.livsci.2015.07.003 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated response, once the genetic correlation is moderate (0.40, SD= 0.17), and the posterior heritability for FCI was relatively low (0.11, SD= 0.03). The traits LMA, BF and RF measured at Y and at PY are practically the same traits since the genetic correlation are 0.83 (SD= 0.06), 0.94 (SD= 0.02) and 0.72 (SD= 0.07), respectively. In conclusion, ultrasound carcass traits should respond rapidly to selection and can be recorded only in one age, at Y or at PY. Furthermore, there is no need to include the two subcutaneous fat thickness measures (BF and RF) in selection criteria since they are highly genetic correlated. Genetic progress for these carcass traits can be achieved without affecting the breeding value of animals for other economic traits, since the most of genetic correlation estimates are favorable and of low magnitude. MenosThe objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated r... Mostrar Tudo |
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Palavras-Chave: |
Ultra-Som. |
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Thesagro: |
Carcaça; Gado de corte. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03033naa a2200241 a 4500
001 2035334
005 2016-01-27
008 2015 bl --- 0-- u #d
024 7 $a10.1016/j.livsci.2015.07.003$2DOI
100 1 $aYOKOO, M. J. I.
245 $aGenetic correlation of traits measured by ultrasound at yearling and 18 months of age in Nellore beef cattle.
260 $c2015
520 $aThe objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated response, once the genetic correlation is moderate (0.40, SD= 0.17), and the posterior heritability for FCI was relatively low (0.11, SD= 0.03). The traits LMA, BF and RF measured at Y and at PY are practically the same traits since the genetic correlation are 0.83 (SD= 0.06), 0.94 (SD= 0.02) and 0.72 (SD= 0.07), respectively. In conclusion, ultrasound carcass traits should respond rapidly to selection and can be recorded only in one age, at Y or at PY. Furthermore, there is no need to include the two subcutaneous fat thickness measures (BF and RF) in selection criteria since they are highly genetic correlated. Genetic progress for these carcass traits can be achieved without affecting the breeding value of animals for other economic traits, since the most of genetic correlation estimates are favorable and of low magnitude.
650 $aCarcaça
650 $aGado de corte
653 $aUltra-Som
700 1 $aLÔBO, R. B.
700 1 $aMAGNABOSCO, C. de U.
700 1 $aROSA, G. J. M.
700 1 $aFORNI, S.
700 1 $aSAINZ, R. D.
700 1 $aALBUQUERQUE, L. G.
773 $tLivestock Science$gv. 180, p. 34-40, Oct. 2015.
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