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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
12/12/2012 |
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Data da última atualização: |
14/10/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAUJO, L. C.; SANTOS, P. M.; RODRIGUEZ, D.; PEZZOPANE, J. R. M.; OLIVEIRA, P. P. A.; CRUZ, P. G. |
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Afiliação: |
LEANDRO C. ARAUJO, UNIVERSIDADE DE SÃO PAULO; PATRICIA MENEZES SANTOS, CPPSE; DANIEL RODRIGUEZ, UNIV. OF QUEENSLAND; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; PEDRO G. CRUZ, UNIVERSIDADE DE SÃO PAULO. |
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Título: |
Simulating Guinea Grass production: empirical and mechanistic approaches. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Agronomy Journal, v. 105, n. 1, 2013. |
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Páginas: |
p. 61-69. |
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DOI: |
https://doi.org/10.2134/agronj2012.0245 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical grasses are economically important for cattle production in Brazil and accurate simulation models for tropical pastures can benefit forage researchers and farm managers improve tropical forage production systems. This research calibrated and validated four modeling approaches of contrasting complexity to simulate mass production of Guineagrass (Panicum maximum Jacq. cv. ?Mombaça?). The models included three empirical agro-climatic models [i.e. a cumulative degree-day (DDi), a photo-thermal-units (PUi), and a climatic growth index (CGIi)]; and a bio-physical simulation model i.e. APSIM-Growth. Data sets for calibration and independent validation included records of frequent above-ground dry matter production over the 2005-2006 and 2010-2011 growing seasons from three trials. All models performed well during calibration (R2 = 0.78 - 0.86; and coefficient of variation = 26 - 32.1%). During model validation the R2 varied between 0.69 and 0.78; the agreement index was between 0.88 and 0.93; the coefficient of variation between 37.6 and 50.2%; and the mean bias error between 6 and 470 kg ha-1. Even though all models were in agreement between simulated and observed results, APSIM-Growth was able to simulate Guineagrass production across a broader climate range, soils and management (i.e. nitrogen fertilization) conditions. |
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Palavras-Chave: |
Guinegrass production; Tropical pasture. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02021naa a2200229 a 4500
001 1942184
005 2024-10-14
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2134/agronj2012.0245$2DOI
100 1 $aARAUJO, L. C.
245 $aSimulating Guinea Grass production$bempirical and mechanistic approaches.$h[electronic resource]
260 $c2013
300 $ap. 61-69.
520 $aTropical grasses are economically important for cattle production in Brazil and accurate simulation models for tropical pastures can benefit forage researchers and farm managers improve tropical forage production systems. This research calibrated and validated four modeling approaches of contrasting complexity to simulate mass production of Guineagrass (Panicum maximum Jacq. cv. ?Mombaça?). The models included three empirical agro-climatic models [i.e. a cumulative degree-day (DDi), a photo-thermal-units (PUi), and a climatic growth index (CGIi)]; and a bio-physical simulation model i.e. APSIM-Growth. Data sets for calibration and independent validation included records of frequent above-ground dry matter production over the 2005-2006 and 2010-2011 growing seasons from three trials. All models performed well during calibration (R2 = 0.78 - 0.86; and coefficient of variation = 26 - 32.1%). During model validation the R2 varied between 0.69 and 0.78; the agreement index was between 0.88 and 0.93; the coefficient of variation between 37.6 and 50.2%; and the mean bias error between 6 and 470 kg ha-1. Even though all models were in agreement between simulated and observed results, APSIM-Growth was able to simulate Guineagrass production across a broader climate range, soils and management (i.e. nitrogen fertilization) conditions.
653 $aGuinegrass production
653 $aTropical pasture
700 1 $aSANTOS, P. M.
700 1 $aRODRIGUEZ, D.
700 1 $aPEZZOPANE, J. R. M.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aCRUZ, P. G.
773 $tAgronomy Journal$gv. 105, n. 1, 2013.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 7 | |
| 2. |  | SIMPLICIO, A. A.; BRACKETT, B. G.; KESKINTEPE, L. Produção de embriões bovinos in vitro em meios quimicamente definidos. Arquivos da Faculdade de Veterinária da UFRGS, Porto Alegre, v. 25, supl, p. 302, 1997. Edição dos anais da 12a. Reunião Anual da Sociedade Brasileira de Transferência de Embriões, ago. 1997, Foz do Iguaçu, PR.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 3. | | SIMPLICIO, A. A.; BRACKETT, B. G.; KESKINTEPE, L. Use of cryopreserved spermatozoa for caprine in vitro fertilization (IVF). Theriogenology, v. 47, n. 1, p. 299, 1997. Proceedings Annual Conference of the International Embryo Transfer Society, Nice Acropolis, Nice, France, Jan., 1997.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 5. | | YOUNIS, A. I.; KESKINTEPE, L.; SIMPLICIO, A. A.; GOULD, K.; BRACKETT, B. G. Effects of EGTA and cytochalasin-B during freezing and vitrification of immature and mature bovine and rhesus monkey (M. mulatta) oocytes. Theriogenology, v. 47, n. 1, p. 361, 1997. Proceedings Annual Conference of the International Embryo Transfer Society, Nice Acropolis, Nice, France, Jan., 1997.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 6. | | KESKINTEPE, L.; MORTON, P. C.; SMITH, S. E.; TUCKER, M. J.; SIMPLÍCIO, A. A.; BRACKETT, B. G. Caprine blastocyst development after intracytoplasmic sperm injection (ICSI). Theriogenology, v. 47, n.1 , p. 249, 1997. Proceedings Annual Conference of the International Embryo Transfer Society, Nice Acropolis, Nice, France, Jan. 1997.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 7. | | KESKINTEPE, L.; MORTON, P. C.; SMITH, S. E.; TUCKER, M. J.; SIMPLICIO, A. A.; BRACKETT, B. G. Caprine blastocyst formation following intracytoplasmic sperm injection and defined culture. Zygote, v. 5, n. 3, p. 261-265, Aug. 1997.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 7 | |
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