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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
06/06/1994 |
Data da última atualização: |
04/09/2014 |
Autoria: |
JANKOWSKY, I. P. |
Título: |
Specific gravity, extractives content and hydroscopicity relationship of Araucaria angustifolia and Eucalyptus citriodora woods. |
Ano de publicação: |
1983 |
Fonte/Imprenta: |
Silvicultura, São Paulo, v. 8, n. 32, p. 826-828, 1983. |
ISSN: |
0583-3132 |
Idioma: |
Inglês |
Notas: |
Edição dos anais do Simpósio IUFRO em Melhoramento Genético e Produtividade de Espécies Florestais de Rápido Crescimento. Fast Growing Trees. |
Palavras-Chave: |
Densidade básica; Extrativo; Higroscopicidade. |
Thesagro: |
Araucária Angustifólia; Eucalyptus Citriodora; Madeira. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00780naa a2200205 a 4500 001 1288699 005 2014-09-04 008 1983 bl uuuu u00u1 u #d 022 $a0583-3132 100 1 $aJANKOWSKY, I. P. 245 $aSpecific gravity, extractives content and hydroscopicity relationship of Araucaria angustifolia and Eucalyptus citriodora woods. 260 $c1983 500 $aEdição dos anais do Simpósio IUFRO em Melhoramento Genético e Produtividade de Espécies Florestais de Rápido Crescimento. Fast Growing Trees. 650 $aAraucária Angustifólia 650 $aEucalyptus Citriodora 650 $aMadeira 653 $aDensidade básica 653 $aExtrativo 653 $aHigroscopicidade 773 $tSilvicultura, São Paulo$gv. 8, n. 32, p. 826-828, 1983.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
28/04/2023 |
Data da última atualização: |
28/04/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 3 |
Autoria: |
SPASIANI, P. P.; HOMEM, B. G. C.; LIMA, I. B. G. de; GUIMARAES, B. C.; MEDEIROS, E. S. de; MUIR, J. P.; OLIVEIRA, M. S. de; BODDEY, R. M.; CASAGRANDEM, D. R. |
Afiliação: |
PAOLA PALAURO SPASIANI, UFLA; BRUNO GROSSI COSTA HOMEM, UFLA; ITALO BRAZ GONCALVES DE LIMA, UFLA; BIANCA COSTA GUIMARAES, UFLA; ELIAS SILVA DE MEDEIROS, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; JAMES PIERRE MUIR, TEXAS A&M UNIVERSITY; MARCELO SILVA DE OLIVEIRA, UFLA; ROBERT MICHAEL BODDEY, CNPAB; DANIEL RUME CASAGRANDE, UFLA. |
Título: |
Light competition is the key factor determining spatio-temporal variability in legume proportion within Marandu palisadegrass-forage peanut mixed pastures. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Crop & Pasture Science, Published online: 21 March 2023. |
ISSN: |
1836-0947 |
DOI: |
10.1071/CP22134 |
Idioma: |
Inglês |
Conteúdo: |
Context Understanding ecology in grass-legume pastures can help support strategies aimed at maintaining canopy stability in terms of botanical composition.Aims This 2-year study evaluated spatial variability, focusing on plant structural characteristics in a Marandu palisadegrass [Urochloa brizantha (Hochst. Ex A. Rich.) R.D. Webster cv. Marandu]-forage peanut (Arachis pintoi Krapov. and W.C. Greg. cv. BRS Mandobi) mixed canopy under grazing in continuous stocking management.Methods The pasture was managed with canopy height of 20-25 cm. The experimental area had a permanent sample grid containing 50 pre-established and georeferenced plots. Principal component analysis was performed, and spatial dependence structure of the first principal component and structural variables were separately characterised by geostatistical analysis.Key results There was spatial dependence of the structural characteristics, with marked spatial heterogeneity in the distribution of all variables. Taller grass canopies caused competition for light between species, reducing legume contribution and inducing more erect forage peanut growth habit. Conversely, in areas with lower grass canopy height, forage peanut botanical composition increased to up to 70%, as it propagated more effectively by stoloniferous propagation.Conclusions The canopy structure spatial variability of a Marandu palisadegrass-forage peanut mixed pasture determines the overall average pasture grass/legume proportion. In regions with taller canopies, Marandu palisadegrass was favoured, while in areas with shorter canopy, forage peanut proportion was promoted. Satisfactory legume proportions can be reached in the canopy despite areas with reduced legume contribution.Implications Our findings using geostatistical techniques facilitate the development of useful and innovative tools allowing better comprehension for the management of mixed pastures. MenosContext Understanding ecology in grass-legume pastures can help support strategies aimed at maintaining canopy stability in terms of botanical composition.Aims This 2-year study evaluated spatial variability, focusing on plant structural characteristics in a Marandu palisadegrass [Urochloa brizantha (Hochst. Ex A. Rich.) R.D. Webster cv. Marandu]-forage peanut (Arachis pintoi Krapov. and W.C. Greg. cv. BRS Mandobi) mixed canopy under grazing in continuous stocking management.Methods The pasture was managed with canopy height of 20-25 cm. The experimental area had a permanent sample grid containing 50 pre-established and georeferenced plots. Principal component analysis was performed, and spatial dependence structure of the first principal component and structural variables were separately characterised by geostatistical analysis.Key results There was spatial dependence of the structural characteristics, with marked spatial heterogeneity in the distribution of all variables. Taller grass canopies caused competition for light between species, reducing legume contribution and inducing more erect forage peanut growth habit. Conversely, in areas with lower grass canopy height, forage peanut botanical composition increased to up to 70%, as it propagated more effectively by stoloniferous propagation.Conclusions The canopy structure spatial variability of a Marandu palisadegrass-forage peanut mixed pasture determines the overall average pasture grass/legume proportion. In regions wi... Mostrar Tudo |
Palavras-Chave: |
Clonal propagation; Mixed pasture; Spatial variability; Warm season legume. |
Thesaurus NAL: |
Arachis pintoi; Geostatistics; Urochloa brizantha. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02938naa a2200325 a 4500 001 2153435 005 2023-04-28 008 2023 bl uuuu u00u1 u #d 022 $a1836-0947 024 7 $a10.1071/CP22134$2DOI 100 1 $aSPASIANI, P. P. 245 $aLight competition is the key factor determining spatio-temporal variability in legume proportion within Marandu palisadegrass-forage peanut mixed pastures.$h[electronic resource] 260 $c2023 520 $aContext Understanding ecology in grass-legume pastures can help support strategies aimed at maintaining canopy stability in terms of botanical composition.Aims This 2-year study evaluated spatial variability, focusing on plant structural characteristics in a Marandu palisadegrass [Urochloa brizantha (Hochst. Ex A. Rich.) R.D. Webster cv. Marandu]-forage peanut (Arachis pintoi Krapov. and W.C. Greg. cv. BRS Mandobi) mixed canopy under grazing in continuous stocking management.Methods The pasture was managed with canopy height of 20-25 cm. The experimental area had a permanent sample grid containing 50 pre-established and georeferenced plots. Principal component analysis was performed, and spatial dependence structure of the first principal component and structural variables were separately characterised by geostatistical analysis.Key results There was spatial dependence of the structural characteristics, with marked spatial heterogeneity in the distribution of all variables. Taller grass canopies caused competition for light between species, reducing legume contribution and inducing more erect forage peanut growth habit. Conversely, in areas with lower grass canopy height, forage peanut botanical composition increased to up to 70%, as it propagated more effectively by stoloniferous propagation.Conclusions The canopy structure spatial variability of a Marandu palisadegrass-forage peanut mixed pasture determines the overall average pasture grass/legume proportion. In regions with taller canopies, Marandu palisadegrass was favoured, while in areas with shorter canopy, forage peanut proportion was promoted. Satisfactory legume proportions can be reached in the canopy despite areas with reduced legume contribution.Implications Our findings using geostatistical techniques facilitate the development of useful and innovative tools allowing better comprehension for the management of mixed pastures. 650 $aArachis pintoi 650 $aGeostatistics 650 $aUrochloa brizantha 653 $aClonal propagation 653 $aMixed pasture 653 $aSpatial variability 653 $aWarm season legume 700 1 $aHOMEM, B. G. C. 700 1 $aLIMA, I. B. G. de 700 1 $aGUIMARAES, B. C. 700 1 $aMEDEIROS, E. S. de 700 1 $aMUIR, J. P. 700 1 $aOLIVEIRA, M. S. de 700 1 $aBODDEY, R. M. 700 1 $aCASAGRANDEM, D. R. 773 $tCrop & Pasture Science, Published online: 21 March 2023.
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