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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
22/02/2018 |
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Data da última atualização: |
07/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PONTES, L. da S.; GIOSTRI, A. F.; BALDISSERA, T. C.; BARRO, R. S.; STAFIN, G.; PORFIRIO-DA-SILVA, V.; MOLETTA, J. L.; CARVALHO, P. C. de F. |
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Afiliação: |
Laíse da Silveira Pontes, IAPAR; André Faé Giostri, UFPR; Tiago Celso Baldissera, Epagri; Raquel Santiago Barro, UFRGS; Giliardi Stafin, IAPAR; VANDERLEY PORFIRIO DA SILVA, CNPF; José Luiz Moletta, IAPAR; Paulo César de Faccio Carvalho, UFRGS. |
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Título: |
Interactive effects of trees and nitrogen supply on the agronomic characteristics of warm-climate grasses. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Agronomy Journal, v. 108, n. 4, p. 1531-1541, 2016. |
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DOI: |
10.2134/agronj2015.0565 |
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Idioma: |
Inglês |
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Conteúdo: |
Plant adaptations to cope with shade may vary according to the degree of shade tolerance and nutrient availability for each species. Studies of diff erent understory species and their responses to combined shade and N eff ects are important to identify ways to optimize the quantity and quality of forage production. Our objective was to measure the dry matter yield (DMY) and nutritive value of six C4 grasses grown in two systems (full sunlight [FS] vs. a naturally shaded system composed of Eucalyptus dunnii Maiden trees) with two N levels (0 vs. 300 kg N ha?1yr?1) using the same target sward conditions (i.e., 50% depletion of the canopy height set by 95% light interception). Over 3 yr, the decreases in DMY under shade compared with FS ranged from 7% [Urochloa brizantha (Hochst. ex A. Rich) R.D. Webster] to 56% (Cynodon spp.) in fertilized treatments and between 11% (Paspalum notatum Fluegge) to 46% (Cynodon spp.) in treatments without N. Th e N eff ect was more important to the nutritive value of the forage than the shade eff ect, particularly for crude protein (CP, +46 g kg?1 with N supply), acid detergent fi ber (ADF, ?46 g kg?1) and leaf proportion (+11.2%). However, most of the species displayed higher leaf digestibility under shade due to decreases in ADF. Even with intense shading (light approximately 48% of unshaded), the digestible DMY and CP yield under trees were, on average, 70 and 71% of the 6.8 and 1.4 t ha?1 recorded in FS, respectively. |
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Palavras-Chave: |
Dry matter production; Light gradient; Sistema agroflorestal; Tolerância à sombra. |
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Thesagro: |
Brachiaria; Brachiaria Brizantha; Gramínea. |
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Thesaurus Nal: |
Agroforestry; Dactylis glomerata; Grasses; Shade tolerance; Silvopastoral systems; Urochloa brizantha. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02582naa a2200373 a 4500
001 2088042
005 2018-05-07
008 2016 bl uuuu u00u1 u #d
024 7 $a10.2134/agronj2015.0565$2DOI
100 1 $aPONTES, L. da S.
245 $aInteractive effects of trees and nitrogen supply on the agronomic characteristics of warm-climate grasses.$h[electronic resource]
260 $c2016
520 $aPlant adaptations to cope with shade may vary according to the degree of shade tolerance and nutrient availability for each species. Studies of diff erent understory species and their responses to combined shade and N eff ects are important to identify ways to optimize the quantity and quality of forage production. Our objective was to measure the dry matter yield (DMY) and nutritive value of six C4 grasses grown in two systems (full sunlight [FS] vs. a naturally shaded system composed of Eucalyptus dunnii Maiden trees) with two N levels (0 vs. 300 kg N ha?1yr?1) using the same target sward conditions (i.e., 50% depletion of the canopy height set by 95% light interception). Over 3 yr, the decreases in DMY under shade compared with FS ranged from 7% [Urochloa brizantha (Hochst. ex A. Rich) R.D. Webster] to 56% (Cynodon spp.) in fertilized treatments and between 11% (Paspalum notatum Fluegge) to 46% (Cynodon spp.) in treatments without N. Th e N eff ect was more important to the nutritive value of the forage than the shade eff ect, particularly for crude protein (CP, +46 g kg?1 with N supply), acid detergent fi ber (ADF, ?46 g kg?1) and leaf proportion (+11.2%). However, most of the species displayed higher leaf digestibility under shade due to decreases in ADF. Even with intense shading (light approximately 48% of unshaded), the digestible DMY and CP yield under trees were, on average, 70 and 71% of the 6.8 and 1.4 t ha?1 recorded in FS, respectively.
650 $aAgroforestry
650 $aDactylis glomerata
650 $aGrasses
650 $aShade tolerance
650 $aSilvopastoral systems
650 $aUrochloa brizantha
650 $aBrachiaria
650 $aBrachiaria Brizantha
650 $aGramínea
653 $aDry matter production
653 $aLight gradient
653 $aSistema agroflorestal
653 $aTolerância à sombra
700 1 $aGIOSTRI, A. F.
700 1 $aBALDISSERA, T. C.
700 1 $aBARRO, R. S.
700 1 $aSTAFIN, G.
700 1 $aPORFIRIO-DA-SILVA, V.
700 1 $aMOLETTA, J. L.
700 1 $aCARVALHO, P. C. de F.
773 $tAgronomy Journal$gv. 108, n. 4, p. 1531-1541, 2016.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 6 | |
| 1. |  | BALDISSERA, T. C.; PONTES, L. da S.; BARRO, R. S.; GIOSTRI, A. F.; TUROK, J. D. N.; LUSTOSA, S. B. C.; CARVALHO, P. C. de F. Altura do dossel forrageiro de seis espécies perenes tropicais em sistema arborizado. In: SIMPÓSIO INTERNACIONAL DE ARBORIZAÇÃO DE PASTAGENS EM REGIOES SUBTROPICAIS, 1., 2013, Colombo. Anais. Colombo: Embrapa Florestas, 2014. p. 142-149. (Embrapa Florestas. Documentos, 268).| Biblioteca(s): Embrapa Florestas. |
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| 2. | | GUERA, K. C. S.; BALDISSERA, T. C.; GIOSTRI, A. F.; MICHETTI, M.; PORTO, C. G. M.; SANTOS, B. R. C. dos; PONTES, L. da 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 REGIOES SUBTROPICAIS, 1., 2013, Colombo. Anais. Colombo: Embrapa Florestas, 2014. p. 150-156. (Embrapa Florestas. Documentos, 268).| Biblioteca(s): Embrapa Florestas. |
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| 3. | | PONTES, L. da S.; GIOSTRI, A. F.; BALDISSERA, T. C.; BARRO, R. S.; STAFIN, G.; PORFIRIO-DA-SILVA, V.; MOLETTA, J. L.; CARVALHO, P. C. de F. Interactive effects of trees and nitrogen supply on the agronomic characteristics of warm-climate grasses. Agronomy Journal, v. 108, n. 4, p. 1531-1541, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 4. | | PONTES, L. da S.; BALDISSERA, T. C.; BARRO, R. S.; GIOSTRI, A. F.; STAFIN, G.; SANTOS, B. R. C.; PORFIRIO-DA-SILVA, V.; CARVALHO, P. C. de 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. EGF at 50: the future of European grasslands: proceedings. Zurich: EGF, 2014. p. 353-355. Disponível online. (Grassland science in Europe, v. 19).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 5. | | BALDISSERA, T. C.; PONTES, L. da S.; BARRO, R. S.; GIOSTRI, A. F.; GUERA, K. C. S.; MICHETTI, M.; PORFIRIO-DA-SILVA, V.; CARVALHO, P. C. de F. Phyllochron and leaf lifespan of four C4 forage grasses cultivated in association with trees. Tropical Grassland - Forrajes Tropicales, v. 2, p. 12-14, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
| Biblioteca(s): Embrapa Florestas. |
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| 6. | | PONTES, L. da S.; GIOSTRI, A.; BALDISSERA, T. C.; BARRO, R. S.; PORFIRIO-DA-SILVA, V.; VALENGA, J. C. S.; TYMOCZUK, C. B.; COPLA, J. F.; JESUS, R. A.; CARVALHO, P. C. F. Interactive tree and N supply effect on six C4 forage grasses productivity. In: INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 2., 2012, Porto Alegre. Invited papers; Offered papers. [S.l.]: INRA, 2012. 3 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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