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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
31/01/2020 |
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Data da última atualização: |
31/01/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, L. S.; SOLLENBERGER, L. E.; COOLEY, K. D.; KOHMANN, M. M.; ARYAL, P.; PEDREIRA, B. C. e; PEDROSO, G. B.; SILVEIRA, M. L.; DUBEUX JÚNIOR, J. C. B. |
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Afiliação: |
LILIANE SEVERINO DA SILVA, UNIVERSITY of FLORIDA, Gainsville-FL; LYNN E. SOLLENBERGER, UNIVERSITY of FLORIDA, Gainsville-FL; KATIE D. COOLEY, UNIVERSITY of FLORIDA, Gainsville-FL; MARTA M. KOHMANN, UNIVERSITY of FLORIDA, Gainsville-FL; PARMESHWOR ARYAL, UNIVERSITY of FLORIDA, Gainsville-FL; BRUNO CARNEIRO E PEDREIRA, CPAMT; GABRIEL BARACAT PEDROSO, UNIVERSITY of FLORIDA, Gainsville-FL; MARIA LUCIA SILVEIRA, UNIVERSITY of FLORIDA, Gainsville-FL; JOSE C. B. DUBEUX JÚNIOR, UNIVERSITY of FLORIDA, Gainsville-FL. |
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Título: |
Above and Belowground Biomass Characteristics of Rhizoma Peanut Entries and Their Relationship with Soil C and N. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: ASA, CSSA & SSSA INTERNATIONAL ANNUAL MEETING, 2019, San Antonio. Embracing the digital environment: abstracts [eletrônico]... San Antonio: ASA; CSSA; SSSA, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
In forage systems, soil C and N are affected by many factors including above- and belowground biomass, root exudation, defoliation management, and tissue turnover dynamics. There is need to understand the main drivers of soil C and N accumulation under perennial forages, especially those factors associated with differences in growth and canopy characteristics. The objective was to determine soil C and N status and their relationship with above- and belowground characteristics of six rhizoma peanut (RP, Arachis glabrata) entries. Treatments were Apalachee, Chico, Ecoturf, Ona33, Peace, and Tito RP arranged in four replicates of a randomized complete block design. Stands were planted in 2010 and harvested twice per year after establishment. The area was previously a long-term bahiagrass (BH, Paspalum notatum) sward. Herbage accumulation (HA) and root-rhizome mass (RRM) and accumulation rate (RRA) were measured in 2016 and 2017. Existing litter and soil to 0-5, 5-10, and 10-20-cm depths were sampled in September and December 2018. Herbage and litter samples were harvested using two, 0.25-m2 quadrats per plot. Three 10-cm diameter cores (20-cm depth) were taken per plot to measure RRM, while RRA was measured using ingrowth cores. Soil C and N concentrations were determined by dry combustion. Among entries, HA ranged from 6.7 to 10.5 Mg ha-1, RRM from 5.5 to 8.6 Mg ha-1, RRA from 10 to 33 kg ha-1 d-1, and litter mass from 1800 to 2300 kg ha-1. Litter mass and RRA were negatively correlated to C and N stocks in the 0-5 cm layer and positively correlated with those in the 10-20 cm layer. This may be due to mineralization of nutrients in surface soil and use by plants to accumulate biomass, followed by release of exudates and tissue turnover at depth. Soil C and N stocks were less responsive to sward characteristics than expected. MenosIn forage systems, soil C and N are affected by many factors including above- and belowground biomass, root exudation, defoliation management, and tissue turnover dynamics. There is need to understand the main drivers of soil C and N accumulation under perennial forages, especially those factors associated with differences in growth and canopy characteristics. The objective was to determine soil C and N status and their relationship with above- and belowground characteristics of six rhizoma peanut (RP, Arachis glabrata) entries. Treatments were Apalachee, Chico, Ecoturf, Ona33, Peace, and Tito RP arranged in four replicates of a randomized complete block design. Stands were planted in 2010 and harvested twice per year after establishment. The area was previously a long-term bahiagrass (BH, Paspalum notatum) sward. Herbage accumulation (HA) and root-rhizome mass (RRM) and accumulation rate (RRA) were measured in 2016 and 2017. Existing litter and soil to 0-5, 5-10, and 10-20-cm depths were sampled in September and December 2018. Herbage and litter samples were harvested using two, 0.25-m2 quadrats per plot. Three 10-cm diameter cores (20-cm depth) were taken per plot to measure RRM, while RRA was measured using ingrowth cores. Soil C and N concentrations were determined by dry combustion. Among entries, HA ranged from 6.7 to 10.5 Mg ha-1, RRM from 5.5 to 8.6 Mg ha-1, RRA from 10 to 33 kg ha-1 d-1, and litter mass from 1800 to 2300 kg ha-1. Litter mass and RRA were negatively ... Mostrar Tudo |
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Thesaurus Nal: |
Biomass; Carbon; Forage; Nitrogen. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209996/1/2019-cpamt-bruno-pedreira-above-belowground-biomass-rhizoma-relationship-soil-C-N-1.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209997/1/2019-cpamt-bruno-pedreira-above-belowground-biomass-rhizoma-relationship-soil-C-N-2.mp4
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Marc: |
LEADER 02714nam a2200253 a 4500
001 2119669
005 2020-01-31
008 2019 bl uuuu u00u1 u #d
100 1 $aSILVA, L. S.
245 $aAbove and Belowground Biomass Characteristics of Rhizoma Peanut Entries and Their Relationship with Soil C and N.$h[electronic resource]
260 $aIn: ASA, CSSA & SSSA INTERNATIONAL ANNUAL MEETING, 2019, San Antonio. Embracing the digital environment: abstracts [eletrônico]... San Antonio: ASA; CSSA; SSSA$c2019
520 $aIn forage systems, soil C and N are affected by many factors including above- and belowground biomass, root exudation, defoliation management, and tissue turnover dynamics. There is need to understand the main drivers of soil C and N accumulation under perennial forages, especially those factors associated with differences in growth and canopy characteristics. The objective was to determine soil C and N status and their relationship with above- and belowground characteristics of six rhizoma peanut (RP, Arachis glabrata) entries. Treatments were Apalachee, Chico, Ecoturf, Ona33, Peace, and Tito RP arranged in four replicates of a randomized complete block design. Stands were planted in 2010 and harvested twice per year after establishment. The area was previously a long-term bahiagrass (BH, Paspalum notatum) sward. Herbage accumulation (HA) and root-rhizome mass (RRM) and accumulation rate (RRA) were measured in 2016 and 2017. Existing litter and soil to 0-5, 5-10, and 10-20-cm depths were sampled in September and December 2018. Herbage and litter samples were harvested using two, 0.25-m2 quadrats per plot. Three 10-cm diameter cores (20-cm depth) were taken per plot to measure RRM, while RRA was measured using ingrowth cores. Soil C and N concentrations were determined by dry combustion. Among entries, HA ranged from 6.7 to 10.5 Mg ha-1, RRM from 5.5 to 8.6 Mg ha-1, RRA from 10 to 33 kg ha-1 d-1, and litter mass from 1800 to 2300 kg ha-1. Litter mass and RRA were negatively correlated to C and N stocks in the 0-5 cm layer and positively correlated with those in the 10-20 cm layer. This may be due to mineralization of nutrients in surface soil and use by plants to accumulate biomass, followed by release of exudates and tissue turnover at depth. Soil C and N stocks were less responsive to sward characteristics than expected.
650 $aBiomass
650 $aCarbon
650 $aForage
650 $aNitrogen
700 1 $aSOLLENBERGER, L. E.
700 1 $aCOOLEY, K. D.
700 1 $aKOHMANN, M. M.
700 1 $aARYAL, P.
700 1 $aPEDREIRA, B. C. e
700 1 $aPEDROSO, G. B.
700 1 $aSILVEIRA, M. L.
700 1 $aDUBEUX JÚNIOR, J. C. B.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
19/09/1996 |
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Data da última atualização: |
13/09/2023 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
EMBRAPA ACRE. |
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Título: |
IV Plano Diretor da Embrapa Acre: 2008-2011-2023. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Rio Branco, AC, 2008. |
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Páginas: |
47 p. |
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Idioma: |
Português |
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Conteúdo: |
Análise estratégica; Análise integrada dos ambientes interno e externo; tendências para o ambiente de atuação; Principais oportunidades e ameaças; Formulação estratégica; Missão; Visão de Futuro; Valores; Desafios Científicos e Tecnológicos; Desafios Institucionais e Organizacionais. |
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Palavras-Chave: |
Acre; Brasil; Embrapa Acre; Master plan; Pesquisa agropecuária; Plano diretor. |
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Thesagro: |
Agricultura; Desenvolvimento Sustentável; Gestão; Inovação; Instituição de Pesquisa; Pesquisa. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAF-AC-2009-09/21186/1/IV_PDU_Embrapa-Acre.pdf
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Marc: |
LEADER 00953nam a2200265 a 4500
001 1511371
005 2023-09-13
008 2008 bl uuuu u0uu1 u #d
100 1 $aEMBRAPA ACRE.
245 $aIV Plano Diretor da Embrapa Acre$b2008-2011-2023.
260 $aRio Branco, AC$c2008
300 $a47 p.
520 $aAnálise estratégica; Análise integrada dos ambientes interno e externo; tendências para o ambiente de atuação; Principais oportunidades e ameaças; Formulação estratégica; Missão; Visão de Futuro; Valores; Desafios Científicos e Tecnológicos; Desafios Institucionais e Organizacionais.
650 $aAgricultura
650 $aDesenvolvimento Sustentável
650 $aGestão
650 $aInovação
650 $aInstituição de Pesquisa
650 $aPesquisa
653 $aAcre
653 $aBrasil
653 $aEmbrapa Acre
653 $aMaster plan
653 $aPesquisa agropecuária
653 $aPlano diretor
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Registro original: |
Embrapa Acre (CPAF-AC) |
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