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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
13/12/2016 |
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Data da última atualização: |
13/12/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PONTE, L. S.; BALDISSERA, T. C.; GIOSTRI, A. F.; STAFIN, G.; SANTOS, B. R. C.; CARVALHO, P. C. F. |
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Título: |
Effects of nitrogen fertilization and cutting intensity on the agronomic performance of warm-season grasses. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Grass and Forage Science, Chichester, United Kingdom, p. 1-13, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Responses of grasses to N fertilization are affected by cutting intensity although little is known regarding the interactions of these factors in warm-season grasses. Pre cutting canopy height, herbage accumulation and changes in the nutritive value of warm-season grasses in response to four different management strategies were assessed from October 2011 to September 2014. Treatments included two cutting intensities (70 vs. 50% depletion of canopy height set by 95% light interception), two N fertilization levels (zero vs. 300 kg N ha1 year1) and six perennial C4 grass species (Axonopus catharinensis; Cynodon spp. hybrid Tifton 85; Hemarthria altissima cv. Florida; Megathyrsus maximus cv. Aruana; Paspalum notatum cv. Pensacola; and Urochloa brizantha cv. Marandu) grown in monoculture in a factorial experimental design. Canopy height varied among grass species, cutting intensity and N treatments, mainly among seasons, indicating that more than one management target (i.e. canopy height) existed throughout the plant growth cycle for each species. The largest herbage accumulation occurred in the N fertilization treatments for most species, regardless of cutting intensity. Nitrogen fertilization and 50% depletion of canopy height increased the leaf proportion and decreased the neutral detergent fibre content. Overall, N fertilization had a stronger positive impact than cutting intensity on the acid detergent fibre content, dry-matter digestibility and crude protein content, but the magnitudes of the responses were species-specific. MenosResponses of grasses to N fertilization are affected by cutting intensity although little is known regarding the interactions of these factors in warm-season grasses. Pre cutting canopy height, herbage accumulation and changes in the nutritive value of warm-season grasses in response to four different management strategies were assessed from October 2011 to September 2014. Treatments included two cutting intensities (70 vs. 50% depletion of canopy height set by 95% light interception), two N fertilization levels (zero vs. 300 kg N ha1 year1) and six perennial C4 grass species (Axonopus catharinensis; Cynodon spp. hybrid Tifton 85; Hemarthria altissima cv. Florida; Megathyrsus maximus cv. Aruana; Paspalum notatum cv. Pensacola; and Urochloa brizantha cv. Marandu) grown in monoculture in a factorial experimental design. Canopy height varied among grass species, cutting intensity and N treatments, mainly among seasons, indicating that more than one management target (i.e. canopy height) existed throughout the plant growth cycle for each species. The largest herbage accumulation occurred in the N fertilization treatments for most species, regardless of cutting intensity. Nitrogen fertilization and 50% depletion of canopy height increased the leaf proportion and decreased the neutral detergent fibre content. Overall, N fertilization had a stronger positive impact than cutting intensity on the acid detergent fibre content, dry-matter digestibility and crude protein content, but th... Mostrar Tudo |
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Palavras-Chave: |
cutting intensity; dry-matter yield; light interception; N supply; nutritive value; tropical grasses. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02325naa a2200253 a 4500
001 1125840
005 2016-12-13
008 2016 bl uuuu u00u1 u #d
100 1 $aPONTE, L. S.
245 $aEffects of nitrogen fertilization and cutting intensity on the agronomic performance of warm-season grasses.$h[electronic resource]
260 $c2016
520 $aResponses of grasses to N fertilization are affected by cutting intensity although little is known regarding the interactions of these factors in warm-season grasses. Pre cutting canopy height, herbage accumulation and changes in the nutritive value of warm-season grasses in response to four different management strategies were assessed from October 2011 to September 2014. Treatments included two cutting intensities (70 vs. 50% depletion of canopy height set by 95% light interception), two N fertilization levels (zero vs. 300 kg N ha1 year1) and six perennial C4 grass species (Axonopus catharinensis; Cynodon spp. hybrid Tifton 85; Hemarthria altissima cv. Florida; Megathyrsus maximus cv. Aruana; Paspalum notatum cv. Pensacola; and Urochloa brizantha cv. Marandu) grown in monoculture in a factorial experimental design. Canopy height varied among grass species, cutting intensity and N treatments, mainly among seasons, indicating that more than one management target (i.e. canopy height) existed throughout the plant growth cycle for each species. The largest herbage accumulation occurred in the N fertilization treatments for most species, regardless of cutting intensity. Nitrogen fertilization and 50% depletion of canopy height increased the leaf proportion and decreased the neutral detergent fibre content. Overall, N fertilization had a stronger positive impact than cutting intensity on the acid detergent fibre content, dry-matter digestibility and crude protein content, but the magnitudes of the responses were species-specific.
653 $acutting intensity
653 $adry-matter yield
653 $alight interception
653 $aN supply
653 $anutritive value
653 $atropical grasses
700 1 $aBALDISSERA, T. C.
700 1 $aGIOSTRI, A. F.
700 1 $aSTAFIN, G.
700 1 $aSANTOS, B. R. C.
700 1 $aCARVALHO, P. C. F.
773 $tGrass and Forage Science, Chichester, United Kingdom, p. 1-13, 2016.
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Registro original: |
Epagri-Sede (Epagri-Sede) |
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| Registros recuperados : 4 | |
| 1. |  | PONTE, L. S.; BALDISSERA, T. C.; GIOSTRI, A. F.; STAFIN, G.; SANTOS, B. R. C.; CARVALHO, P. C. F. Effects of nitrogen fertilization and cutting intensity on the agronomic performance of warm-season grasses. Grass and Forage Science, Chichester, United Kingdom, p. 1-13, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - B |
| Biblioteca(s): Epagri-Sede. |
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| 2. | | BALDISSERA, T. C.; PONTES, L. S.; BARRO, R. S.; GIOSTRI, A. F.; SANTOS, B. R. C.; MORAES, A.; CARVALHO, P. C. F. Leaf Growth of C4 forage species according to shading of trees and nitrogen. In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS, 2015, Brasília. Proceedings... Brasília: Embrapa, 2015. p. 288| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Epagri-Sede. |
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| 3. | | GUERA, K. C. S.; BALDISSERA, T. C.; GIOSTRI, A. F.; MICHETTI, M.; PORTO, C. G. M.; SANTOS, B. R. C.; PONTES, L. S. Composição morfológica de seis forrageiras perenes tropicais em sistema arborizado com Eucaliptus dunni e ao sol pleno. In: SIMPÓSIO INTERNACIONAL DE ARBORIZAÇÃO DE PASTAGENS EM REGIÕES SUBTROPICAIS, 1., 2013, Curitiba, PR. Anais... Colombo,PR: Embrapa Florestas, 2014. p. 150-156.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Epagri-Sede. |
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| 4. | | PONTES, L. S.; BALDISSERA, T. C.; BARRO, R. S.; GIOSTRI, A. F.; STAFIN, G.; SANTOS, B. R. C.; SILVA, V. P.; CARVALHO, P. C. F. Interactive N supply and cutting intensity effect on canopy height at 95% light interception. In: GENERAL MEETING OF THE EUROPEAN GRASSLAND FEDERATION, 25., 2014, Aberystwyth, Wales. Proceedings... Gogerddan, UK: European Grassland Federation, 2014. p. 353-355.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 4 | |
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