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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sudeste; Embrapa Pesca e Aquicultura. |
Data corrente: |
12/08/2021 |
Data da última atualização: |
10/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BRUNETTI, H. B.; BOOTE, K. J.; SANTOS, P. M.; PEZZOPANE, J. R. M.; PEDREIRA, C. G. S.; LARA, M. A. S.; MORENO, L. S. de B.; HOOGENBOOM, G. |
Afiliação: |
HENRIQUE B. BRUNETTI, USP-ESALQ; KENNETH J. BOOTE, UNIVERSITY OF FLORIDA; PATRICIA MENEZES SANTOS, CPPSE; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; CARLOS G. S. PEDREIRA, USP-ESALQ; MÁRCIO A. S. LARA, UFLA; LEONARDO SIMOES DE BARROS MORENO, CNPASA; GERRIT HOOGENBOOM, UNIVERSITY OF FLORIDA. |
Título: |
Improving the CROPGRO Perennial Forage Model for simulating growth and biomass partitioning of guineagrass. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Agronomy Journal, v. 113, n. 4, p. 3299-3314, July/Aug. 2021. |
ISSN: |
1435-0645 |
DOI: |
https://doi.org/10.1002/agj2.20766 |
Idioma: |
Inglês |
Conteúdo: |
Tropical forage grasses are used for several applications including grazing, silage, and biofuels; with harvesting at varying phenological stages. Mechanistic simulation models can be powerful tools to assist with planning and decision making of pasture utilization strategies. The objective of this study was to improve and evaluate the ability of the Cropping System Model-CROPGRO-Perennial Forage model (CSMCROPGRO-PFM) to simulate growth and biomass partitioning of two guineagrass [Panicum maximum Jacq. syn. Megathyrsus maximus (Jacq.) BK Simon & SWL Jacobs] cultivars, Tanzânia and Mombaça. Data from two experiments with contrasting harvest management and field conditions were used. Model parameters were modified, targeting improvement in d-statistic and root mean square error (RMSE) for aboveground, leaf, stem biomass, leaf area index (LAI), and leaf proportion of aboveground biomass. Major improvement in model performance was achieved by modifying the vegetative partitioning parameters between leaf and stem through increasing partitioning to leaf during early regrowth while increasing it to stem during late regrowth. Modifications were made to parameters affecting leaf and stem senescence, leaf photosynthesis, and leaf area expansion sensitivity to cool weather. The RMSE values decreased from 2,261 to 1,768 kg ha-1 for aboveground biomass, from 1,620 to 874 kg ha-1 for stem biomass, from 11.41 to 7.27% for leaf percentage, from 1.91 to 1.68 for LAI, but increased slightly for leaf biomass. The d-statistic computed over all these variables increased from .86 to .93. The improved model performance for both short and long harvest cycles will facilitate further applications for diverse forage crops utilization strategies. MenosTropical forage grasses are used for several applications including grazing, silage, and biofuels; with harvesting at varying phenological stages. Mechanistic simulation models can be powerful tools to assist with planning and decision making of pasture utilization strategies. The objective of this study was to improve and evaluate the ability of the Cropping System Model-CROPGRO-Perennial Forage model (CSMCROPGRO-PFM) to simulate growth and biomass partitioning of two guineagrass [Panicum maximum Jacq. syn. Megathyrsus maximus (Jacq.) BK Simon & SWL Jacobs] cultivars, Tanzânia and Mombaça. Data from two experiments with contrasting harvest management and field conditions were used. Model parameters were modified, targeting improvement in d-statistic and root mean square error (RMSE) for aboveground, leaf, stem biomass, leaf area index (LAI), and leaf proportion of aboveground biomass. Major improvement in model performance was achieved by modifying the vegetative partitioning parameters between leaf and stem through increasing partitioning to leaf during early regrowth while increasing it to stem during late regrowth. Modifications were made to parameters affecting leaf and stem senescence, leaf photosynthesis, and leaf area expansion sensitivity to cool weather. The RMSE values decreased from 2,261 to 1,768 kg ha-1 for aboveground biomass, from 1,620 to 874 kg ha-1 for stem biomass, from 11.41 to 7.27% for leaf percentage, from 1.91 to 1.68 for LAI, but increased slightly... Mostrar Tudo |
Palavras-Chave: |
Growth and biomass partitioning; Mombaça; Stem biomass. |
Thesagro: |
Biomassa; Modelo de Simulação; Panicum Maximum; Pastagem. |
Thesaurus Nal: |
Forage crops; Megathyrsus maximus; Tanzania. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02791naa a2200349 a 4500 001 2133598 005 2021-12-10 008 2021 bl uuuu u00u1 u #d 022 $a1435-0645 024 7 $ahttps://doi.org/10.1002/agj2.20766$2DOI 100 1 $aBRUNETTI, H. B. 245 $aImproving the CROPGRO Perennial Forage Model for simulating growth and biomass partitioning of guineagrass.$h[electronic resource] 260 $c2021 520 $aTropical forage grasses are used for several applications including grazing, silage, and biofuels; with harvesting at varying phenological stages. Mechanistic simulation models can be powerful tools to assist with planning and decision making of pasture utilization strategies. The objective of this study was to improve and evaluate the ability of the Cropping System Model-CROPGRO-Perennial Forage model (CSMCROPGRO-PFM) to simulate growth and biomass partitioning of two guineagrass [Panicum maximum Jacq. syn. Megathyrsus maximus (Jacq.) BK Simon & SWL Jacobs] cultivars, Tanzânia and Mombaça. Data from two experiments with contrasting harvest management and field conditions were used. Model parameters were modified, targeting improvement in d-statistic and root mean square error (RMSE) for aboveground, leaf, stem biomass, leaf area index (LAI), and leaf proportion of aboveground biomass. Major improvement in model performance was achieved by modifying the vegetative partitioning parameters between leaf and stem through increasing partitioning to leaf during early regrowth while increasing it to stem during late regrowth. Modifications were made to parameters affecting leaf and stem senescence, leaf photosynthesis, and leaf area expansion sensitivity to cool weather. The RMSE values decreased from 2,261 to 1,768 kg ha-1 for aboveground biomass, from 1,620 to 874 kg ha-1 for stem biomass, from 11.41 to 7.27% for leaf percentage, from 1.91 to 1.68 for LAI, but increased slightly for leaf biomass. The d-statistic computed over all these variables increased from .86 to .93. The improved model performance for both short and long harvest cycles will facilitate further applications for diverse forage crops utilization strategies. 650 $aForage crops 650 $aMegathyrsus maximus 650 $aTanzania 650 $aBiomassa 650 $aModelo de Simulação 650 $aPanicum Maximum 650 $aPastagem 653 $aGrowth and biomass partitioning 653 $aMombaça 653 $aStem biomass 700 1 $aBOOTE, K. J. 700 1 $aSANTOS, P. M. 700 1 $aPEZZOPANE, J. R. M. 700 1 $aPEDREIRA, C. G. S. 700 1 $aLARA, M. A. S. 700 1 $aMORENO, L. S. de B. 700 1 $aHOOGENBOOM, G. 773 $tAgronomy Journal$gv. 113, n. 4, p. 3299-3314, July/Aug. 2021.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registros recuperados : 64 | |
1. | | PEDREIRA, C. G.; PEDREIRA, B. C. e; LARA, M. A. Leaf photosynthesis of Panicum spp. grasses as determined by level of insertion, portion of the leaf blade, and light intensity. In: ASA CSSA SSSA International Annual Meetings, 2011, San Antonio, Texas. Fundamentals for life: soil, crop, and environmental sciences. Madison: ASA, 2011.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Agrossilvipastoril. |
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10. | | GUARDA, V. DEL A.; LARA, M. A. S.; SARTURI, J. O.; TONATO, F.; SANTOS, P. M. Parâmetros fisiológicos de Brachiaria brizantha - cv, Marandu, submetidos a doses de glifosato no processo de conservação de forragem. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP, 2007.Tipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Pecuária Sudeste. |
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15. | | ABREU, U. G. P. de; EGITO, A. A.; GRATTAPAGLIA, D.; LARA, M. A. C. Variabilidade genética das matrizes do núcleo de conservação do bovino pantaneiro avaliada por meio do índice prioritário para conservação e polimorfismos protéicos. In: SIMPÓSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 6., 2007, Chapingo, México. Por la valoración de los recursos genéticos para el desarrollo sustentable en América Latina y el Caribe: memoria. Chapingo: Universidad Autónoma Chapingo, 2007. p. 327Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Pantanal. |
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16. | | ABREU, U. G. P.; EGITO, A. A.; SANTOS, S. A.; GRATTAPAGLIA, D.; LARA, M. A. C. Variabilidade genética das matrizes do núcleo de conservação do bovino pantaneiro avaliada por meio do índice prioritário para conservação e polimorfismos proteícos. In: SIMPÓSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 6., 2007, Chapingo, México. Por la valoración de los recursos genéticos para el desarrollo sustentable en América Latina y el Caribe: memoria. Chapingo: Universidad Autónoma Chapingo, 2007. p. 353Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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17. | | TONATO, G.; GUARDA, V. DEL A.; LARA, M. A. S.; SARTURI, J. O.; SANTOS, P. M. Uso de dessecante no pré-emurchecimento de Brachiaria brizantha - cv Marandu visando a conservação deforragem, parâmetros morfológicos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP, 2007. 1 CD-ROMTipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Pecuária Sudeste. |
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19. | | ABREU, U. G. P. de; COBUCI, J. A.; PIMENTEL, C. M.; SERENO, J. R. B.; LARA, M. A. C. Analise da curva de crescimento da raca de bovino pantaneiro. In: SIMPOSIO DE RECURSOS GENETICOS PARA A AMERICA LATINA E CARIBE - SIRGEALC, 3.; REUNIAO LATINO AMERICANA DE ESPECIALISTAS EM ARACHIS, 3.; REUNIAO LATINO AMERICANA DE ESPECIALISTAS EM RECURSOS GENETICOS FLORESTAIS, 3., 2001, Londrina. Anais... Londrina: IAPAR, 2001. p.465-467.Biblioteca(s): Embrapa Pantanal. |
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20. | | LARA M. A.; CAVALCANTE-NETO, A.; SANTOS-SILVA, M. F.; RIBEIRO, M. N.; JULIANO, R. S.; LANDI, V. Diversidade genética de ovinos morada nova com emprego de microssatélites. In: SIMPOSIO IBEROAMERICANO SOBRE CONSERVACIÓN Y UTILIZACIÓN DE RECURSOS ZOOGENÉTICOS, 18., 2017, Chiquimula, Guatemala. Resúmenes. Chiquimula: Universidad de São Carlos de Guatemala, 2017. p. 9.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Pantanal. |
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Registros recuperados : 64 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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