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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
05/02/2002 |
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Data da última atualização: |
05/02/2002 |
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Autoria: |
FURLANI, A. M. C.; FURLANI, P. R. |
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Título: |
Composicao e ph de solucoes nutritivas para estudo fisiologicos e selecao de plantas em condicoes nutricionais adversas |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
B.Tecn.Inst.Agron.,Campinas, v.121, 1988. |
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Idioma: |
Português |
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Conteúdo: |
Sao descritas as composicoes de solucoes nutritivas utilizadas em estudos de selecao de plantas de arroz,milho e sorgo,para maior eficiencia da absorcao e utilizacao de N,P ou K e para tolerancia ao AL, em experimento de curta duracao,em condicoes semicontroladas.Consideracoes sao feitas quanto ao balanco de nutrientes na solucao,controle do PH e efeitos do N-NH+4, N-NO-3, K+ e AL3+ na mudanca do ph da solucao. |
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Palavras-Chave: |
arrroz. |
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Thesagro: |
Alumínio; Fósforo; Milho; Nitrogênio; Potássio; Sorgo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01005naa a2200217 a 4500
001 1650401
005 2002-02-05
008 1988 bl --- 0-- u #d
100 1 $aFURLANI, A. M. C.
245 $aComposicao e ph de solucoes nutritivas para estudo fisiologicos e selecao de plantas em condicoes nutricionais adversas
260 $c1988
520 $aSao descritas as composicoes de solucoes nutritivas utilizadas em estudos de selecao de plantas de arroz,milho e sorgo,para maior eficiencia da absorcao e utilizacao de N,P ou K e para tolerancia ao AL, em experimento de curta duracao,em condicoes semicontroladas.Consideracoes sao feitas quanto ao balanco de nutrientes na solucao,controle do PH e efeitos do N-NH+4, N-NO-3, K+ e AL3+ na mudanca do ph da solucao.
650 $aAlumínio
650 $aFósforo
650 $aMilho
650 $aNitrogênio
650 $aPotássio
650 $aSorgo
653 $aarrroz
700 1 $aFURLANI, P. R.
773 $tB.Tecn.Inst.Agron.,Campinas$gv.121, 1988.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Gado de Leite. |
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Data corrente: |
16/08/2021 |
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Data da última atualização: |
24/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BRETAS, I. L.; VALENTE, D. S. M.; SILVA, F. F.; CHIZZOTTI, M. L.; PAULINO, M. F.; D’ÁUREA, A. P.; PACIULLO, D. S. C.; PEDREIRA, B. C. e; CHIZZOTTI, F. H. M. |
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Afiliação: |
IGOR L. BRETAS, Universidade Federal de Viçosa; DOMINGOS S. M. VALENTE, Universidade Federal de Viçosa; FABYANO F. SILVA, Universidade Federal de Viçosa; MARIO L. CHIZZOTTI, Universidade Federal de Viçosa; MÁRIO F. PAULINO, Universidade Federal de Viçosa; ANDRÉ P. D’ÁUREA, Premix; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; BRUNO CARNEIRO E PEDREIRA, CPAMT; FERNANDA H. M. CHIZZOTTI, Universidade Federal de Viçosa. |
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Título: |
Prediction of aboveground biomass and dry-matter content in brachiaria pastures by combining meteorological data and satellite imagery. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Grass and Forage Science, v. 76, p. 340-362, 2021. |
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DOI: |
https://doi.org/10.1111/gfs.12517 |
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Idioma: |
Inglês |
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Conteúdo: |
Aboveground biomass (AGB) data are important for profitable and sustainable pasture management. In this study, we hypothesized that vegetation indexes (VIs) obtained through analysis of moderate spatial resolution satellite data (Landsat-8 and Sentinel-2) and meteorological data can accurately predict the AGB of Brachiaria (syn. Urochloa) pastures in Brazil. We used AGB field data obtained from pastures between 2015 and 2019 in four distinct regions of Brazil to evaluate (i) the relationship between three different VIs?normalized difference vegetation index (NDVI), enhanced vegetation index 2 (EVI2) and optimized soil adjusted vegetation index (OSAVI)?and meteorological data with pasture aboveground fresh biomass (AFB), aboveground dry biomass (ADB) and dry-matter content (DMC); and (ii) the performance of simple linear regression (SLR), multiple linear regression (MLR) and random forest (RF) algorithms for the prediction of pasture AGB based on VIs obtained through satellite imagery combined with meteorological data. The results highlight a strong correlation (r) between VIs and AGB, particularly NDVI (r = 0.52 to 0.84). The MLR and RF algorithms demonstrated high potential to predict AFB (R2 = 0.76 to 0.85) and DMC (R2 = 0.78 to 0.85). We conclude that both MLR and RF algorithms improved the biomass prediction accuracy using satellite imagery combined with meteorological data to determine AFB and DMC, and can be used for Brachiaria (syn. Urochloa) AGB prediction. Additional research on tropical grasses is needed to evaluate different VIs to improve the accuracy of ADB prediction, thereby supporting pasture management in Brazil. MenosAboveground biomass (AGB) data are important for profitable and sustainable pasture management. In this study, we hypothesized that vegetation indexes (VIs) obtained through analysis of moderate spatial resolution satellite data (Landsat-8 and Sentinel-2) and meteorological data can accurately predict the AGB of Brachiaria (syn. Urochloa) pastures in Brazil. We used AGB field data obtained from pastures between 2015 and 2019 in four distinct regions of Brazil to evaluate (i) the relationship between three different VIs?normalized difference vegetation index (NDVI), enhanced vegetation index 2 (EVI2) and optimized soil adjusted vegetation index (OSAVI)?and meteorological data with pasture aboveground fresh biomass (AFB), aboveground dry biomass (ADB) and dry-matter content (DMC); and (ii) the performance of simple linear regression (SLR), multiple linear regression (MLR) and random forest (RF) algorithms for the prediction of pasture AGB based on VIs obtained through satellite imagery combined with meteorological data. The results highlight a strong correlation (r) between VIs and AGB, particularly NDVI (r = 0.52 to 0.84). The MLR and RF algorithms demonstrated high potential to predict AFB (R2 = 0.76 to 0.85) and DMC (R2 = 0.78 to 0.85). We conclude that both MLR and RF algorithms improved the biomass prediction accuracy using satellite imagery combined with meteorological data to determine AFB and DMC, and can be used for Brachiaria (syn. Urochloa) AGB prediction. Additiona... Mostrar Tudo |
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Palavras-Chave: |
Índice de vegetação; Pastagem tropical. |
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Thesagro: |
Biomassa; Pastagem; Satélite; Sensoriamento Remoto. |
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Thesaurus NAL: |
Biomass; Remote sensing; Tropical grasslands; Vegetation index. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226348/1/Prediction-aboveground-biomass.pdf
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Marc: |
LEADER 02720naa a2200349 a 4500
001 2133603
005 2021-09-24
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/gfs.12517$2DOI
100 1 $aBRETAS, I. L.
245 $aPrediction of aboveground biomass and dry-matter content in brachiaria pastures by combining meteorological data and satellite imagery.$h[electronic resource]
260 $c2021
520 $aAboveground biomass (AGB) data are important for profitable and sustainable pasture management. In this study, we hypothesized that vegetation indexes (VIs) obtained through analysis of moderate spatial resolution satellite data (Landsat-8 and Sentinel-2) and meteorological data can accurately predict the AGB of Brachiaria (syn. Urochloa) pastures in Brazil. We used AGB field data obtained from pastures between 2015 and 2019 in four distinct regions of Brazil to evaluate (i) the relationship between three different VIs?normalized difference vegetation index (NDVI), enhanced vegetation index 2 (EVI2) and optimized soil adjusted vegetation index (OSAVI)?and meteorological data with pasture aboveground fresh biomass (AFB), aboveground dry biomass (ADB) and dry-matter content (DMC); and (ii) the performance of simple linear regression (SLR), multiple linear regression (MLR) and random forest (RF) algorithms for the prediction of pasture AGB based on VIs obtained through satellite imagery combined with meteorological data. The results highlight a strong correlation (r) between VIs and AGB, particularly NDVI (r = 0.52 to 0.84). The MLR and RF algorithms demonstrated high potential to predict AFB (R2 = 0.76 to 0.85) and DMC (R2 = 0.78 to 0.85). We conclude that both MLR and RF algorithms improved the biomass prediction accuracy using satellite imagery combined with meteorological data to determine AFB and DMC, and can be used for Brachiaria (syn. Urochloa) AGB prediction. Additional research on tropical grasses is needed to evaluate different VIs to improve the accuracy of ADB prediction, thereby supporting pasture management in Brazil.
650 $aBiomass
650 $aRemote sensing
650 $aTropical grasslands
650 $aVegetation index
650 $aBiomassa
650 $aPastagem
650 $aSatélite
650 $aSensoriamento Remoto
653 $aÍndice de vegetação
653 $aPastagem tropical
700 1 $aVALENTE, D. S. M.
700 1 $aSILVA, F. F.
700 1 $aCHIZZOTTI, M. L.
700 1 $aPAULINO, M. F.
700 1 $aD’ÁUREA, A. P.
700 1 $aPACIULLO, D. S. C.
700 1 $aPEDREIRA, B. C. e
700 1 $aCHIZZOTTI, F. H. M.
773 $tGrass and Forage Science$gv. 76, p. 340-362, 2021.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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