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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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Embrapa Agrossilvipastoril (CPAMT) |
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