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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
26/08/1993 |
Data da última atualização: |
26/08/1993 |
Autoria: |
SANTOS, R. C. dos. |
Título: |
Consideracoes gerais sobre a genetica e melhoramento do amendoim: seminario. |
Ano de publicação: |
1991 |
Fonte/Imprenta: |
Campina Grande: EMBRAPA-CNPA, 1991. |
Páginas: |
15p |
Idioma: |
Português |
Conteúdo: |
Aspecto evolutivo da planta; Consideracoes sobre a genetica; Consideracoes sobre a flor e a hibridacao no amendoim; Melhoramento genetico. |
Palavras-Chave: |
Groundnut; Peanut; Seminario. |
Thesagro: |
Amendoim; Arachis Hypogaea; Genética; Melhoramento. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00663nam a2200205 a 4500 001 1262831 005 1993-08-26 008 1991 bl uuuu u0uu1 u #d 100 1 $aSANTOS, R. C. dos 245 $aConsideracoes gerais sobre a genetica e melhoramento do amendoim$bseminario. 260 $aCampina Grande: EMBRAPA-CNPA$c1991 300 $a15p 520 $aAspecto evolutivo da planta; Consideracoes sobre a genetica; Consideracoes sobre a flor e a hibridacao no amendoim; Melhoramento genetico. 650 $aAmendoim 650 $aArachis Hypogaea 650 $aGenética 650 $aMelhoramento 653 $aGroundnut 653 $aPeanut 653 $aSeminario
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Embrapa Algodão (CNPA) |
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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
Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Pecuária Sudeste. |
Data corrente: |
08/06/2020 |
Data da última atualização: |
29/09/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
GOMES, F. J.; BOSI, C.; PEDREIRA, B. C. e; SANTOS, P. M.; PEDREIRA, C. G. S. |
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. |
Título: |
Parameterization of the APSIM model for simulating palisadegrass growth under continuous stocking in monoculture and in a silvopastoral system. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Agricultural Systems, v. 184, 102876, 2020. |
ISSN: |
0308-521X |
DOI: |
https://doi.org/10.1016/j.agsy.2020.102876 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Agricultural systems modeling; APSIM Tropical Pasture; Brachiaria brizantha cv Marandu; Forest livestock integration; Marandu; Mato Grosso; Sinop-MT; Tropical grass. |
Thesagro: |
Agrossilvicultura; Brachiaria Brizantha; Forragem; Forragicultura. |
Thesaurus NAL: |
Agroforestry. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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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