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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
04/08/2005 |
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Data da última atualização: |
04/08/2005 |
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Autoria: |
PITOMBEIRA, J. B. (Coord.). |
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Título: |
Plano de implantação do Centro Nacional de Pesquisa do Caju. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Brasília, DF: EMBRAPA, 1987. |
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Páginas: |
53 p. |
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Idioma: |
Português |
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Conteúdo: |
Diagnóstico do caju; Objetivos do centro; Localização do Centro; Estratégia de atuação do Centro; Descrição geral do Progrma de Pesquisa do Trigo; Estrutura Organizacional do Centro; Implantação do Centro. |
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Categoria do assunto: |
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Marc: |
LEADER 00545nam a2200121 a 4500
001 1115236
005 2005-08-04
008 1987 bl uuuu 00u1 u #d
100 1 $aPITOMBEIRA, J. B. (Coord.).
245 $aPlano de implantação do Centro Nacional de Pesquisa do Caju.
260 $aBrasília, DF: EMBRAPA$c1987
300 $a53 p.
520 $aDiagnóstico do caju; Objetivos do centro; Localização do Centro; Estratégia de atuação do Centro; Descrição geral do Progrma de Pesquisa do Trigo; Estrutura Organizacional do Centro; Implantação do Centro.
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Embrapa Unidades Centrais (AI-SEDE) |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Pecuária Sudeste. |
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Data corrente: |
08/06/2020 |
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Data da última atualização: |
29/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
GOMES, F. J.; BOSI, C.; PEDREIRA, B. C. e; SANTOS, P. M.; PEDREIRA, C. G. S. |
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Afiliação: |
FAGNER JUNIOR GOMES, USP, ESALQ, Piracicaba-SP; CRISTIAM BOSI, USP, ESALQ, Piracicaba-SP; BRUNO CARNEIRO E PEDREIRA, CPAMT; PATRICIA MENEZES SANTOS, CPPSE; CARLOS GUILHERME SILVEIRA PEDREIRA, USP, ESALQ, Piracicaba-SP. |
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Título: |
Parameterization of the APSIM model for simulating palisadegrass growth under continuous stocking in monoculture and in a silvopastoral system. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agricultural Systems, v. 184, 102876, 2020. |
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ISSN: |
0308-521X |
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DOI: |
https://doi.org/10.1016/j.agsy.2020.102876 |
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Idioma: |
Inglês |
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Conteúdo: |
Sustainable intensification of livestock production systems has become a global demand. In silvopastoral systems, contrasting shading levels caused by the presence of trees interferes in the productive responses of the pasture under grazing. The environment in which plants develop in a pasture canopy is dynamic and complex due to the nature of soil-plant-animal interactions. These dynamic aspects can be rationalized, evaluated, and explained using mathematical modeling. The objective of the present study was to parameterize the APSIMTropical Pasture model to simulate palisadegrass [Brachiaria brizantha (Hochst A Rich) Stapf, syn. Urochloa brizantha] growth under continuous stocking and variable stocking rate, in a full sun system and in contrasting shading conditions of a silvopastoral setting with eucalyptus (Eucalyptus grandis W. Hill ex Maiden × Eucalyptus urophylla S. T. Blake). Trees were planted in triple-row groves, with three groves per 2-ha silvopasture area. The spacing between groves was 30 m, and tree density was 135 ha−1, in East-West orientation. The data used to calibrate and validate the model were collected in a 36-month experiment with full sun and shade treatments of the silvopastoral setting in Sinop, MT, Brazil. Live forage mass estimates had coefficient of determination varying between 0.76 and 0.94, Willmott agreement index ranged from 0.93 to 0.96, and root mean square error between 275 and 610 kg DM ha−1. The APSIM-Tropical Pasture model can simulate Marandu palisadegrass growth under continuous stocking with variable stocking rate, but improvements are needed to better simulate the effect of N fertilizations in different periods on growth. The model can simulate pasture growth under shading levels but our simulations did not consider competition for soil moisture, which should be considered in the future, since it can be an important factor for other silvopastoral designs or microclimatic conditions. MenosSustainable intensification of livestock production systems has become a global demand. In silvopastoral systems, contrasting shading levels caused by the presence of trees interferes in the productive responses of the pasture under grazing. The environment in which plants develop in a pasture canopy is dynamic and complex due to the nature of soil-plant-animal interactions. These dynamic aspects can be rationalized, evaluated, and explained using mathematical modeling. The objective of the present study was to parameterize the APSIMTropical Pasture model to simulate palisadegrass [Brachiaria brizantha (Hochst A Rich) Stapf, syn. Urochloa brizantha] growth under continuous stocking and variable stocking rate, in a full sun system and in contrasting shading conditions of a silvopastoral setting with eucalyptus (Eucalyptus grandis W. Hill ex Maiden × Eucalyptus urophylla S. T. Blake). Trees were planted in triple-row groves, with three groves per 2-ha silvopasture area. The spacing between groves was 30 m, and tree density was 135 ha−1, in East-West orientation. The data used to calibrate and validate the model were collected in a 36-month experiment with full sun and shade treatments of the silvopastoral setting in Sinop, MT, Brazil. Live forage mass estimates had coefficient of determination varying between 0.76 and 0.94, Willmott agreement index ranged from 0.93 to 0.96, and root mean square error between 275 and 610 kg DM ha−1. The APSIM-Tropical Pasture model ... Mostrar Tudo |
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Palavras-Chave: |
Agricultural systems modeling; APSIM Tropical Pasture; Brachiaria brizantha cv Marandu; Forest livestock integration; Marandu; Mato Grosso; Sinop-MT; Tropical grass. |
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Thesagro: |
Agrossilvicultura; Brachiaria Brizantha; Forragem; Forragicultura. |
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Thesaurus NAL: |
Agroforestry. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03060naa a2200349 a 4500
001 2125159
005 2020-09-29
008 2020 bl uuuu u00u1 u #d
022 $a0308-521X
024 7 $ahttps://doi.org/10.1016/j.agsy.2020.102876$2DOI
100 1 $aGOMES, F. J.
245 $aParameterization of the APSIM model for simulating palisadegrass growth under continuous stocking in monoculture and in a silvopastoral system.$h[electronic resource]
260 $c2020
520 $aSustainable intensification of livestock production systems has become a global demand. In silvopastoral systems, contrasting shading levels caused by the presence of trees interferes in the productive responses of the pasture under grazing. The environment in which plants develop in a pasture canopy is dynamic and complex due to the nature of soil-plant-animal interactions. These dynamic aspects can be rationalized, evaluated, and explained using mathematical modeling. The objective of the present study was to parameterize the APSIMTropical Pasture model to simulate palisadegrass [Brachiaria brizantha (Hochst A Rich) Stapf, syn. Urochloa brizantha] growth under continuous stocking and variable stocking rate, in a full sun system and in contrasting shading conditions of a silvopastoral setting with eucalyptus (Eucalyptus grandis W. Hill ex Maiden × Eucalyptus urophylla S. T. Blake). Trees were planted in triple-row groves, with three groves per 2-ha silvopasture area. The spacing between groves was 30 m, and tree density was 135 ha−1, in East-West orientation. The data used to calibrate and validate the model were collected in a 36-month experiment with full sun and shade treatments of the silvopastoral setting in Sinop, MT, Brazil. Live forage mass estimates had coefficient of determination varying between 0.76 and 0.94, Willmott agreement index ranged from 0.93 to 0.96, and root mean square error between 275 and 610 kg DM ha−1. The APSIM-Tropical Pasture model can simulate Marandu palisadegrass growth under continuous stocking with variable stocking rate, but improvements are needed to better simulate the effect of N fertilizations in different periods on growth. The model can simulate pasture growth under shading levels but our simulations did not consider competition for soil moisture, which should be considered in the future, since it can be an important factor for other silvopastoral designs or microclimatic conditions.
650 $aAgroforestry
650 $aAgrossilvicultura
650 $aBrachiaria Brizantha
650 $aForragem
650 $aForragicultura
653 $aAgricultural systems modeling
653 $aAPSIM Tropical Pasture
653 $aBrachiaria brizantha cv Marandu
653 $aForest livestock integration
653 $aMarandu
653 $aMato Grosso
653 $aSinop-MT
653 $aTropical grass
700 1 $aBOSI, C.
700 1 $aPEDREIRA, B. C. e
700 1 $aSANTOS, P. M.
700 1 $aPEDREIRA, C. G. S.
773 $tAgricultural Systems$gv. 184, 102876, 2020.
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Embrapa Agrossilvipastoril (CPAMT) |
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