<b>Light relations and performance of signal grass in silvopastoral system
The aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the produ...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Editora da Universidade Estadual de Maringá (Eduem)
2014-03-01
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| Series: | Acta Scientiarum: Animal Sciences |
| Subjects: | |
| Online Access: | http://186.233.154.254/ojs/index.php/ActaSciAnimSci/article/view/22398 |
| _version_ | 1818008993043316736 |
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| author | Cynara Oliveira Diniz Rodrigues Saulo Alberto do Carmo Araújo Maria Celuta Machado Viana Norberto Silva Rocha Thiago Gomes dos Santos Braz Severino Delmar Junqueira Villela |
| author_facet | Cynara Oliveira Diniz Rodrigues Saulo Alberto do Carmo Araújo Maria Celuta Machado Viana Norberto Silva Rocha Thiago Gomes dos Santos Braz Severino Delmar Junqueira Villela |
| author_sort | Cynara Oliveira Diniz Rodrigues |
| collection | DOAJ |
| description | The aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the production and chemical composition of pasture. The experimental design was a randomized block in a split plot, with three replications. The sampling site affected absolute irradiance, photosynthetic active radiation (PAR), light interception (LI) and red/far red ratio, with higher rates in the center of spacing. There were high and positive correlations between LI/leaf area index (LAI), LI/dry mater (DM) and LAI/DM in the center and LI/LAI and FAR/DM in the side of tree rows. Spatial arrangement (3×2)×20 m had higher rates for plant height (PH), DM and neutral detergent fiber rate, while (2×2)×9 m had high leaf/stem ratio and crude protein rate. In the case of the sampling site, higher rates of PH and DM were reported in the center. Forage composition was not affected by sampling sites. Highest production of DM was obtained in the (3×2)×20 m arrangement and improvements in forage composition were observed in denser arrangements. |
| first_indexed | 2024-04-14T05:36:23Z |
| format | Article |
| id | doaj.art-32c7eab330144cf3bf9289821cc8747e |
| institution | Directory Open Access Journal |
| issn | 1806-2636 1807-8672 |
| language | English |
| last_indexed | 2024-04-14T05:36:23Z |
| publishDate | 2014-03-01 |
| publisher | Editora da Universidade Estadual de Maringá (Eduem) |
| record_format | Article |
| series | Acta Scientiarum: Animal Sciences |
| spelling | doaj.art-32c7eab330144cf3bf9289821cc8747e2022-12-22T02:09:37ZengEditora da Universidade Estadual de Maringá (Eduem)Acta Scientiarum: Animal Sciences1806-26361807-86722014-03-0136212913610.4025/actascianimsci.v36i2.2239810893<b>Light relations and performance of signal grass in silvopastoral systemCynara Oliveira Diniz Rodrigues0Saulo Alberto do Carmo Araújo1Maria Celuta Machado Viana2Norberto Silva Rocha3Thiago Gomes dos Santos Braz4Severino Delmar Junqueira Villela5Universidade Federal dos Vales do Jequitinhonha e MucuriUniversidade Federal dos Vales do Jequitinhonha e MucuriEmpresa de Pesquisa Agropecuária de Minas GeraisUniversidade Federal dos Vales do Jequitinhonha e MucuriUniversidade Federal dos Vales do Jequitinhonha e MucuriUniversidade Federal dos Vales do Jequitinhonha e MucuriThe aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the production and chemical composition of pasture. The experimental design was a randomized block in a split plot, with three replications. The sampling site affected absolute irradiance, photosynthetic active radiation (PAR), light interception (LI) and red/far red ratio, with higher rates in the center of spacing. There were high and positive correlations between LI/leaf area index (LAI), LI/dry mater (DM) and LAI/DM in the center and LI/LAI and FAR/DM in the side of tree rows. Spatial arrangement (3×2)×20 m had higher rates for plant height (PH), DM and neutral detergent fiber rate, while (2×2)×9 m had high leaf/stem ratio and crude protein rate. In the case of the sampling site, higher rates of PH and DM were reported in the center. Forage composition was not affected by sampling sites. Highest production of DM was obtained in the (3×2)×20 m arrangement and improvements in forage composition were observed in denser arrangements.http://186.233.154.254/ojs/index.php/ActaSciAnimSci/article/view/22398quality of lightshadingspatial arrangementsUrochloa decumbens |
| spellingShingle | Cynara Oliveira Diniz Rodrigues Saulo Alberto do Carmo Araújo Maria Celuta Machado Viana Norberto Silva Rocha Thiago Gomes dos Santos Braz Severino Delmar Junqueira Villela <b>Light relations and performance of signal grass in silvopastoral system Acta Scientiarum: Animal Sciences quality of light shading spatial arrangements Urochloa decumbens |
| title | <b>Light relations and performance of signal grass in silvopastoral system |
| title_full | <b>Light relations and performance of signal grass in silvopastoral system |
| title_fullStr | <b>Light relations and performance of signal grass in silvopastoral system |
| title_full_unstemmed | <b>Light relations and performance of signal grass in silvopastoral system |
| title_short | <b>Light relations and performance of signal grass in silvopastoral system |
| title_sort | b light relations and performance of signal grass in silvopastoral system |
| topic | quality of light shading spatial arrangements Urochloa decumbens |
| url | http://186.233.154.254/ojs/index.php/ActaSciAnimSci/article/view/22398 |
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