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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
02/12/2022 |
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Data da última atualização: |
02/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KRAHL, G.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; WERNER, S. S.; LOPES, C. F.; RIBEIRO FILHO, H. M. N. |
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Afiliação: |
GUSTAVO KRAHL, University of the West of Santa Catarina; TIAGO CELSO BALDISSERA, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; CASSIANO EDUARDO PINTO, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; FABIO CERVO GARAGORRY, CPPSUL; SIMONE SILMARA WERNER, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; CÁSSIO FELIPE LOPES, Santa Catarina State University; HENRIQUE MENDONÇA NUNES RIBEIRO FILHO, Santa Catarina State University. |
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Título: |
Can pasture defoliation management targets be similarunder full sun and shaded conditions? |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Crop & Pasture Science, 21592, 31 Aug. 2022. |
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Idioma: |
Inglês |
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Notas: |
Online early. |
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Conteúdo: |
Abstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation canopy height should be avoided when managing A. catharinensis, regardless of the light environment. Implications: Recommended targets may be easily implemented by livestock producers and are similar for full sun and shade environments. Keywords: Axonopus catharinensis Valls, canopy height, defoliation severity, defoliation target, herbage accumulation, integrated crop-livestock systems, tiller density. MenosAbstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation ca... Mostrar Tudo |
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Thesagro: |
Altura; Desfolha; Integração; Pastagem. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02619naa a2200253 a 4500
001 2149158
005 2022-12-02
008 2022 bl uuuu u00u1 u #d
100 1 $aKRAHL, G.
245 $aCan pasture defoliation management targets be similarunder full sun and shaded conditions?$h[electronic resource]
260 $c2022
500 $aOnline early.
520 $aAbstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation canopy height should be avoided when managing A. catharinensis, regardless of the light environment. Implications: Recommended targets may be easily implemented by livestock producers and are similar for full sun and shade environments. Keywords: Axonopus catharinensis Valls, canopy height, defoliation severity, defoliation target, herbage accumulation, integrated crop-livestock systems, tiller density.
650 $aAltura
650 $aDesfolha
650 $aIntegração
650 $aPastagem
700 1 $aBALDISSERA, T. C.
700 1 $aPINTO, C. E.
700 1 $aGARAGORRY, F. C.
700 1 $aWERNER, S. S.
700 1 $aLOPES, C. F.
700 1 $aRIBEIRO FILHO, H. M. N.
773 $tCrop & Pasture Science, 21592, 31 Aug. 2022.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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| Registros recuperados : 109 | |
| 7. |  | LOPES, C. F.; GARAGORRY, F. C.; BALDISSERA, T. C.; PINTO, C. E. Avaliação do ciclo produtivo e produtividade de cultivares de azevém consorciadas com mistura de leguminosas hibernais na região dos campos de altitude. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 12., 2022, Bagé, RS. Resumos... Bagé: Embrapa Pecuária Sul, 2022. p. 7. Ana Cristina Mazzocato, editora técnica. ODS.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 9. | | LOPES, C. F.; BALDISSERA, T. C.; PINTO, C. E.; ZANELLA, P. G.; GARAGORRY, F. C. Caracterização da qualidade de sementes de espécies hibernais comercializadas em Santa Catarina. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 9., 2019, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2019. p. 11. (Embrapa Pecuária Sul. Eventos técnicos & científicos, 2). Fernando Flores Cardoso, editor técnico.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 11. | | LOPES, C. F.; GARAGORRY, F. C.; BALDISSERA, T. C.; PINTO, C. E.; WERNER, S. S. Densidade de semeadura de azevém (Lolium multiflorum) no controle de capim-annoni (Eragrostis plana Ness). In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 11., 2021, Bagé, RS. Resumos... Bagé: Embrapa Pecuária Sul, 2021. p. 25. (Embrapa Pecuária Sul. Eventos técnicos & científicos, 4). Ana Cristina Mazzocato, editora técnica.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 14. | | GARAGORRY, F. C.; PINTO, C. E.; COSTA JÚNIOR, N. B.; BALDISSERA, T. C. Growth rates of natural grassland, improved natural grassland and cultivated pasture in six locations in highland of Santa Catarina State. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 52., 2015, Belo Horizonte. Zootecnia: otimizando recursos e potencialidades: anais. Brasília, DF: Sociedade Brasileira de Zootecnia, 2015. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 16. | | ROBINSON, T. K.; PINTO, C. E.; BRAMBILLA, D.; PEREZ, N. B.; NABINGER, C. Morphogenic analysis of three geographical populations of Eragrostis plana ness in South of Brazil. In: INTERNATIONAL RANGELAND CONGRESS, 9., 2011, Rosario. Diverse rangelands for a sustainable society. Buenos Aires: Fundación Argeninta, 2011. p. 205. 1 CD-ROM. Autores Susana Feldman; Oliva, Gabriel; Mónica Sacido.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 20. | | ARAÚJO, C. E. S. de; BALDISSERA, T. C.; TRABAQUINI, K.; GARAGORRY, F. C.; PINTO, C. E. Mapeamento da aptidão climática para a semeadura de Urochloa brizantha cv. MG5 em Santa Catarina. In: WORKSHOP DE CIÊNCIA E INOVAÇÃO EM PECUÁRIA, 2., 2022, Lages. Construindo a pecuária sustentável em Santa Catarina: anais.... Florianópolis: Epagri, 2022. p. 46-49. (Epagri. Documentos, 355).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 109 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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