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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
09/02/1998 |
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Data da última atualização: |
09/02/1998 |
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Autoria: |
COUTO, F. A. de A.; BOOCK, O. J.; MIRANDA, J. E. C. de; FEDALTO, A. A. |
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Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
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Título: |
Ensaios Nacionais de cultivares de batata (Solanum tuberosum L.): comportamento de cultivares procedentes da Holanda, Alemanha, Suecia, Escocia, Polonia, Belgica e Brasil - quarto relatorio - versao 78/79. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Brasilia: EMBRAPA-UEPAE Brasilia, 1979. |
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Páginas: |
25p. |
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Idioma: |
Português |
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Palavras-Chave: |
Competicao de cultivares; Competition; Productivity. |
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Thesagro: |
Batata; Melhoramento; Performance; Produtividade; Solanum Tuberosum; Variedade. |
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Thesaurus Nal: |
breeding; potatoes; varieties. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00896nam a2200289 a 4500
001 1759638
005 1998-02-09
008 1979 bl uuuu u0uu1 u #d
100 1 $aCOUTO, F. A. de A.
245 $aEnsaios Nacionais de cultivares de batata (Solanum tuberosum L.)$bcomportamento de cultivares procedentes da Holanda, Alemanha, Suecia, Escocia, Polonia, Belgica e Brasil - quarto relatorio - versao 78/79.
260 $aBrasilia: EMBRAPA-UEPAE Brasilia$c1979
300 $a25p.
650 $abreeding
650 $apotatoes
650 $avarieties
650 $aBatata
650 $aMelhoramento
650 $aPerformance
650 $aProdutividade
650 $aSolanum Tuberosum
650 $aVariedade
653 $aCompeticao de cultivares
653 $aCompetition
653 $aProductivity
700 1 $aBOOCK, O. J.
700 1 $aMIRANDA, J. E. C. de
700 1 $aFEDALTO, A. A.
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Registro original: |
Embrapa Hortaliças (CNPH) |
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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 Pecuária Sudeste. |
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Data corrente: |
15/03/2022 |
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Data da última atualização: |
08/11/2023 |
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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: |
VIEIRA JUNIOR, N. A.; EVERS, J.; VIANNA, M. DOS S.; PEDREIRO, B. C. E; PEZZOPANE, J. R. M.; MARIN, F. R. |
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Afiliação: |
NILSON APARECIDO VIEIRA JUNIOR, ESALQ; JOCHEM EVERS, Wageningen University & Research; MURILO DOS SANTOS VIANNA, University of Leeds; BRUNO CARNEIRO E PEDREIRA, Kansas State University; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; FÁBIO RICARDO MARIN, ESALQ. |
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Título: |
Understanding the arrangement of Eucalyptus-Marandu palisade grass silvopastoral systems in Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agricultural Systems, v.196, 2022, 103316. |
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Páginas: |
15 p. |
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DOI: |
https://doi.org/10.1016/j.agsy.2021.103316 |
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Idioma: |
Inglês |
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Conteúdo: |
CONTEXT: Limited land availability and an increasing global population are challenges faced by the agricultural sector in the coming decades. The silvopastoral system is an efficient alternative to full sun pastures that could be used to sustainably intensify animal and crop production. However, the adoption of this system is being held back by a lack of knowledge on how the trees in such a system should be arranged in order to avoid detrimental effects on pasture growth. OBJECTIVE: The aim of this study was to test different arrangements of trees in the Eucalyptus-Marandu palisade grass silvopastoral system and to evaluate its performance in different regions of Brazil. METHODS: A functional-structural plant model was developed to simulate radiation interception by trees and was then coupled to the CROPGRO-Perennial Forage model to simulate the production of forage biomass. Considering solar radiation as the main resource under competition, water interactions that occur under-ground between Eucalyptus and Maranu palisade grass were not considered. The models were calibrated with experimental data collected in silvopastoral systems in Brazil. The silvopastoral systems were selected according to a combination of tree row spacing (15, 30, and 45 m), two row orientations (north-south and east-west), and single or triple rows. Simulations were replicated for different tree ages (2, 4, 6, 8, 10 and 12 years) representing different levels of shading. RESULTS AND CONCLUSIONS: Our simulations show that the tree arrangement has a significant effect on the incidence of radiation on the pasture, resulting in different levels of forage production. Row spacing of 30 and 45 m is suitable for providing forage for the animals for several years. In contrast, tree arrangements with a row spacing of 15 m or triple lines demand more careful planning and management, taking into account the soil and climatic characteristics of each region. Lower declines in the forage production were observed in arrangements of 45 m, varying from 1000 and 3000 kg ha-1 after 6 years of system establishment. In this period, the annual production level was lower than 14,000 kg ha-1 for arrangments with row spacing of 15 and 30 m, being recommend pruning and thinning practices aiming to increase the radiation incidence within the system. SIGNIFICANCE: The approach used in this study can be extended to other combinations of species and environments to aid the planning and management of this kind of system. MenosCONTEXT: Limited land availability and an increasing global population are challenges faced by the agricultural sector in the coming decades. The silvopastoral system is an efficient alternative to full sun pastures that could be used to sustainably intensify animal and crop production. However, the adoption of this system is being held back by a lack of knowledge on how the trees in such a system should be arranged in order to avoid detrimental effects on pasture growth. OBJECTIVE: The aim of this study was to test different arrangements of trees in the Eucalyptus-Marandu palisade grass silvopastoral system and to evaluate its performance in different regions of Brazil. METHODS: A functional-structural plant model was developed to simulate radiation interception by trees and was then coupled to the CROPGRO-Perennial Forage model to simulate the production of forage biomass. Considering solar radiation as the main resource under competition, water interactions that occur under-ground between Eucalyptus and Maranu palisade grass were not considered. The models were calibrated with experimental data collected in silvopastoral systems in Brazil. The silvopastoral systems were selected according to a combination of tree row spacing (15, 30, and 45 m), two row orientations (north-south and east-west), and single or triple rows. Simulations were replicated for different tree ages (2, 4, 6, 8, 10 and 12 years) representing different levels of shading. RESULTS AND CONCLUSIONS: Our s... Mostrar Tudo |
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Palavras-Chave: |
CROPGRO perennial forage; Functional structural plant modeling; ILPF; Livestock forest. |
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Thesaurus NAL: |
Intercropping. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 03325naa a2200265 a 4500
001 2140924
005 2023-11-08
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.agsy.2021.103316$2DOI
100 1 $aVIEIRA JUNIOR, N. A.
245 $aUnderstanding the arrangement of Eucalyptus-Marandu palisade grass silvopastoral systems in Brazil.$h[electronic resource]
260 $c2022
300 $a15 p.
520 $aCONTEXT: Limited land availability and an increasing global population are challenges faced by the agricultural sector in the coming decades. The silvopastoral system is an efficient alternative to full sun pastures that could be used to sustainably intensify animal and crop production. However, the adoption of this system is being held back by a lack of knowledge on how the trees in such a system should be arranged in order to avoid detrimental effects on pasture growth. OBJECTIVE: The aim of this study was to test different arrangements of trees in the Eucalyptus-Marandu palisade grass silvopastoral system and to evaluate its performance in different regions of Brazil. METHODS: A functional-structural plant model was developed to simulate radiation interception by trees and was then coupled to the CROPGRO-Perennial Forage model to simulate the production of forage biomass. Considering solar radiation as the main resource under competition, water interactions that occur under-ground between Eucalyptus and Maranu palisade grass were not considered. The models were calibrated with experimental data collected in silvopastoral systems in Brazil. The silvopastoral systems were selected according to a combination of tree row spacing (15, 30, and 45 m), two row orientations (north-south and east-west), and single or triple rows. Simulations were replicated for different tree ages (2, 4, 6, 8, 10 and 12 years) representing different levels of shading. RESULTS AND CONCLUSIONS: Our simulations show that the tree arrangement has a significant effect on the incidence of radiation on the pasture, resulting in different levels of forage production. Row spacing of 30 and 45 m is suitable for providing forage for the animals for several years. In contrast, tree arrangements with a row spacing of 15 m or triple lines demand more careful planning and management, taking into account the soil and climatic characteristics of each region. Lower declines in the forage production were observed in arrangements of 45 m, varying from 1000 and 3000 kg ha-1 after 6 years of system establishment. In this period, the annual production level was lower than 14,000 kg ha-1 for arrangments with row spacing of 15 and 30 m, being recommend pruning and thinning practices aiming to increase the radiation incidence within the system. SIGNIFICANCE: The approach used in this study can be extended to other combinations of species and environments to aid the planning and management of this kind of system.
650 $aIntercropping
653 $aCROPGRO perennial forage
653 $aFunctional structural plant modeling
653 $aILPF
653 $aLivestock forest
700 1 $aEVERS, J.
700 1 $aVIANNA, M. DOS S.
700 1 $aPEDREIRO, B. C. E
700 1 $aPEZZOPANE, J. R. M.
700 1 $aMARIN, F. R.
773 $tAgricultural Systems$gv.196, 2022, 103316.
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