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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
24/05/2023 |
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Autoria: |
PEAKE, D. C. I.; HENZELL, E. F.; STIRK, G. B.; PEAKE, A. |
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Título: |
Simulation of changes in herbage biomass and drought response of a buffel grass (Cenchrus ciliaris cv. biloela) in Southern Queensland. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Agro-Ecosystems, v. 5, n. 1, p. 23-40, Jan. 1979. |
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DOI: |
https://doi.org/10.1016/0304-3746(79)90024-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Changes of herbage biomass on ungrazed Biloela buffel grass swards at the Narayen Research Station were investigated in field experiments and by means of computer simulation. The daily rate of change of herbage biomass was calculated by an empiricial model consisting of two equations. The first, used when the ration of estimated actual to potential transpiration (transpiration ratio) was > 0.26, computed the daily of increase in herbage dry weight (DW) as the product of the potential net production of herbage multiplied by temperature and moisture factors, and by a factor that allowed for delayed regrowth when effective rain fell after drought. The second equation, used when the transpiration ratio was < 0.26, computed the daily loss of DW as a function of the standing weight of herbage multiplied by the same moisture factor. Transpiration was estimated with a water-balance model. The herbage model was used to simulate the biomass of Biloela buffel grass on an ungrazed field experiment on a duplex soil (similar to the solodic and eutric planosols of the ?FAO Soil Map of the World?). The plots were mown three times a year, in spring, summer and autumn, and they received sufficient nitrogen and other nutrients for near-maximum production. The linear regression of measured on simulated DW's of herbage for the two years' data from which the values of the models' constants and functions were derived had a coefficient of determination (R2) of 0.955; two additional years' results from the same experiment were estimated with an R2 of 0.913. Using the same model but different soil constants, in another experiment at Narayen on a gradational clay soil (related to the eutric nitosols) the biomass of Biloela buffel grass was simulated with an R2 of 0.823. The model was then used with historical rainfall records to simulate the biomass of Biloela buffell grass herbage in the Narayen environment for the period 1887 to 1973. Frequencies were calculated for: (a) in the case of swards with optimum nitrogen supply ? estimated mean daily transpiration ratios, estimated daily rates of herbage production (or reduction), and estimated herbage yields from three harvests a year, and (b) in the case of swards dependent on soil nitrogen ? potential nitrogen fertilizer responses of at least 200 or 2000 kg DW ha?1 at the spring, summer and autumn harvests. The reduction in standing crop of herbage during drought, delay in regrowth after drought, evapotranspiration models, and nitrogen responses in dry climates are discussed with reference to previous results. MenosAbstract: Changes of herbage biomass on ungrazed Biloela buffel grass swards at the Narayen Research Station were investigated in field experiments and by means of computer simulation. The daily rate of change of herbage biomass was calculated by an empiricial model consisting of two equations. The first, used when the ration of estimated actual to potential transpiration (transpiration ratio) was > 0.26, computed the daily of increase in herbage dry weight (DW) as the product of the potential net production of herbage multiplied by temperature and moisture factors, and by a factor that allowed for delayed regrowth when effective rain fell after drought. The second equation, used when the transpiration ratio was < 0.26, computed the daily loss of DW as a function of the standing weight of herbage multiplied by the same moisture factor. Transpiration was estimated with a water-balance model. The herbage model was used to simulate the biomass of Biloela buffel grass on an ungrazed field experiment on a duplex soil (similar to the solodic and eutric planosols of the ?FAO Soil Map of the World?). The plots were mown three times a year, in spring, summer and autumn, and they received sufficient nitrogen and other nutrients for near-maximum production. The linear regression of measured on simulated DW's of herbage for the two years' data from which the values of the models' constants and functions were derived had a coefficient of determination (R2) of 0.955; two additional years'... Mostrar Tudo |
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Palavras-Chave: |
Weights. |
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Thesagro: |
Capim Buffel; Cenchrus ciliaris; Gramínea; Planta Forrageira. |
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Thesaurus Nal: |
Australia; Biomass; Forage grasses; Growing season; Vegetable growing. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03469naa a2200289 a 4500
001 1523785
005 2023-05-24
008 1979 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0304-3746(79)90024-6$2DOI
100 1 $aPEAKE, D. C. I.
245 $aSimulation of changes in herbage biomass and drought response of a buffel grass (Cenchrus ciliaris cv. biloela) in Southern Queensland.$h[electronic resource]
260 $c1979
520 $aAbstract: Changes of herbage biomass on ungrazed Biloela buffel grass swards at the Narayen Research Station were investigated in field experiments and by means of computer simulation. The daily rate of change of herbage biomass was calculated by an empiricial model consisting of two equations. The first, used when the ration of estimated actual to potential transpiration (transpiration ratio) was > 0.26, computed the daily of increase in herbage dry weight (DW) as the product of the potential net production of herbage multiplied by temperature and moisture factors, and by a factor that allowed for delayed regrowth when effective rain fell after drought. The second equation, used when the transpiration ratio was < 0.26, computed the daily loss of DW as a function of the standing weight of herbage multiplied by the same moisture factor. Transpiration was estimated with a water-balance model. The herbage model was used to simulate the biomass of Biloela buffel grass on an ungrazed field experiment on a duplex soil (similar to the solodic and eutric planosols of the ?FAO Soil Map of the World?). The plots were mown three times a year, in spring, summer and autumn, and they received sufficient nitrogen and other nutrients for near-maximum production. The linear regression of measured on simulated DW's of herbage for the two years' data from which the values of the models' constants and functions were derived had a coefficient of determination (R2) of 0.955; two additional years' results from the same experiment were estimated with an R2 of 0.913. Using the same model but different soil constants, in another experiment at Narayen on a gradational clay soil (related to the eutric nitosols) the biomass of Biloela buffel grass was simulated with an R2 of 0.823. The model was then used with historical rainfall records to simulate the biomass of Biloela buffell grass herbage in the Narayen environment for the period 1887 to 1973. Frequencies were calculated for: (a) in the case of swards with optimum nitrogen supply ? estimated mean daily transpiration ratios, estimated daily rates of herbage production (or reduction), and estimated herbage yields from three harvests a year, and (b) in the case of swards dependent on soil nitrogen ? potential nitrogen fertilizer responses of at least 200 or 2000 kg DW ha?1 at the spring, summer and autumn harvests. The reduction in standing crop of herbage during drought, delay in regrowth after drought, evapotranspiration models, and nitrogen responses in dry climates are discussed with reference to previous results.
650 $aAustralia
650 $aBiomass
650 $aForage grasses
650 $aGrowing season
650 $aVegetable growing
650 $aCapim Buffel
650 $aCenchrus ciliaris
650 $aGramínea
650 $aPlanta Forrageira
653 $aWeights
700 1 $aHENZELL, E. F.
700 1 $aSTIRK, G. B.
700 1 $aPEAKE, A.
773 $tAgro-Ecosystems$gv. 5, n. 1, p. 23-40, Jan. 1979.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 21 | |
| 2. |  | SILVA, M. R. da; DUARTE, O. R.; PASSOS, M. A. B.; CARVALHO, A. dos S.; VALE, H. S. do. Distribuição geográfica de patauá (oenocarpus bataua mart.) Em Roraima. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... [S.l.]: Sociedade Brasileira de Recursos Genéticos, 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 3. | | VALE, H. S. do; DUARTE, O. R.; CARVALHO, A. dos S.; SILVA, M. R. da; PASSOS, M. A. B. Floração e frutificação do tachi (melicoccus bijugatus jacq.) Em Boa Vista, Roraima. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... [S.l.]: Sociedade Brasileira de Recursos Genéticos, 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 4. | | CARVALHO, A. dos S.; DUARTE, O. R.; VALE, H. S. do; SILVA, M. R. da; PASSOS, M. A. B. Ocorrência e distribuição geográfica de myrciaria floribunda em Roraima. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... [S.l.]: Sociedade Brasileira de Recursos Genéticos, 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 5. | | CARVALHO, A. dos S.; CHAGAS, E. A.; PIO, R.; BETTIOL NETO, J. E.; SANCHES, J.; CIA, P.; PASQUAL, M.; CHAGAS, P. C.; SILVA, M. L. da. Comportamento adaptativo de cultivares de macieira em regiões de inverno ameno. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: SBF, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 6. | | NEVES, A. A.; BETTIOL NETO, J. E.; BARBOSA, W.; CHAGAS, P. C.; CIA, P.; SANCHES, J.; CARVALHO, A. dos S.; PIO, R.; CHAGAS, E. Avaliação vegetativa e fenológica de cultivares de ameixeira de baixa exigência em frio. In: CONGRESSO INTERISTITUCIONAL DE INICIAÇÃO CIENTÍFICA- CIIC, 3. 2009, Campinas. Anais... Campinas, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| 7. | | CARVALHO, A. dos S.; BARBOSA, W.; NEVES, A. A.; BETTIOL NETO, J. E.; DALL'ORTO, F. A. C.; CIA, P.; SANCHES, J.; CHAGAS, E.; PIO, R. Avaliação de seleções avançadas de pessegueiro e nectarineira para ensaios regionais visando futuros lançamentos de novas cultivares. In: CONGRESSO INTERISTITUCIONAL DE INICIAÇÃO CIENTÍFICA- CIIC, 3. 2009, Campinas. Anais... Campinas, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| 8. | | VILENA, J. de O.; CHAGAS, E. A.; DONINI, L. P.; PIO, R.; CARVALHO, A. dos S.; SMIDERLE, O. J.; ARAUJO, M. da C. da R. Efeito da profundidade de semeadura no vigor inicial de plântula de camu-camu. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: SBF, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 9. | | CHAGAS, P. C.; SCARPARE FILHO, J. A.; CHAGAS, E.; PIO, R.; SANCHES, J.; CIA, P.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Evaluation of the vegetative development of cultivars of plum of low chilling grafted in rootstock 'okinawa peach'. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 10. | | SILVA, M. L. da; CHAGAS, P. C.; CHAGAS, E. A.; PIO, R.; BETTIOL NETO, J. E.; SANCHES, J.; CIA, P.; PASQUAL, M.; CARVALHO, A. dos S. Épocas de florescimento e colheita de cultivares de macieira Na região leste paulista. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: SBF, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 11. | | CHAGAS, P. C.; SCARPARE FILHO, J. A.; SANCHES, J.; CIA, P.; CHAGAS, E.; PIO, R.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Effect of dormacy of break in cultivars of plum of low chilling and grafted in rootstock of peach 'okinawa'. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 12. | | PIO, R.; CHAGAS, E.; BARBOSA, W.; CHAGAS, P. C.; SCARPARE FILHO, J. A.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Criopreservation pf peach and nectarine pollen grains. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 13. | | CHAGAS, E. A.; CARVALHO, A. dos S.; BACELAR-LIMA, C. G.; DUARTE, O. R.; NEVES, L. C.; ALBUQUERQUE, T. C. S. de. Ocorrência e distribuição geográfica de populações nativas de camu-camu no estado de Roraima . In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF, 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 14. | | CHAGAS, E.; BARBOSA, W.; PIO, R.; CHAGAS, P. C.; SCARPARE FILHO, J. A.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Phenological assessment of cultivars and selections of peach and nectarine with low chiling. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 15. | | CHAGAS, E.; BARBOSA, W.; PIO, R.; CHAGAS, P. C.; SCARPARE FILHO, J. A.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Polinic viability of prunus persica. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 16. | | CHAGAS, E. A.; BACELAR-LIMA, C. G.; CARVALHO, A. dos S.; RIBEIRO, M. I. G.; SAKAZAKI, R. T.; NEVES, L. C. Propagação do camu-camu (Myrciaria dubia (H.B.K.) Mcvaugh). Revista Agro@mbiente On-line, v. 6, n. 1, p. 67-73, janeiro-abril, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Roraima. |
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| 17. | | PIO, R.; CHAGAS, E.; BARBOSA, W.; CHAGAS, P. C.; SCARPARE FILHO, J. A.; PASQUAL, M.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. Prunus persica (L.) batsch nucipersica pollen grain in vitro germination. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 18. | | CHAGAS, E. A.; CHAGAS, P. C.; PIO, R.; BETTIOL NETO, J. E.; SANCHES, J.; CARMO, S. A. do; CIA, P.; PASQUAL, M.; CARVALHO, A. dos S. Produção e atributos de qualidade de cultivares de macieira nas condições subtropicais da região Leste paulista. Ciência Rural, Santa Maria, v.42, n.10, p.1764-1769, out, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Roraima. |
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| 19. | | PASQUAL, M.; CHAGAS, E.; PIO, R.; BARBOSA, W.; SCARPARE FILHO, J. A.; CHAGAS, P. C.; BETTIOL NETO, J. E.; NEVES, A. A.; CARVALHO, A. dos S. In vitro culture immature embryos of prunus persica L. Batsch. In: INTERNATIONAL PEACH SYMPOSIUM, 7., 2009, Espanha. Resumos... Espanha, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| 20. | | KASI, R.; BARBOSA, W.; BETTIOL NETO, J. E.; DALL'ORTO, F. A. C.; CIA, P.; GRASSI, A. M.; SANCHES, J.; CARVALHO, A. dos S.; NEVES, A. A.; PIO, R.; CHAGAS, E. Avaliação da Intesidade de raleio na qualidade de frutos de nespereira. In: CONGRESSO INTERISTITUCIONAL DE INICIAÇÃO CIENTÍFICA- CIIC, 3. 2009, Campinas. Anais... Campinas, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| Registros recuperados : 21 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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