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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido; Embrapa Uva e Vinho. |
Data corrente: |
21/08/2009 |
Data da última atualização: |
30/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, C. R. de; BASSOI, L. H.; LIMA FILHO, J. M. P.; SILVA, F. F. S. da; VIANA, L. H.; DANTAS, B. F.; PEREIRA, M. S.; RIBEIRO, P. R. de A. |
Afiliação: |
CLAUDIA RITA DE SOUZA; LUIS HENRIQUE BASSOI, CPATSA; JOSÉ MOACIR PINHEIRO LIMA FILHO; FABRÍCIO FRANCISCO SANTOS DA SILVA; LEANDRO HESPANHOL VIANA, UENF/CCTA; BARBARA FRANCA DANTAS, CPATSA; MAIANE SANTOS PEREIRA; PAULA ROSE DE ALMEIDA RIBEIRO. |
Título: |
Water relations of field-grown grapevines in the São Francisco Valley, Brazil, under different rootstocks and irrigation strategies. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Scientia Agrícola, v. 66, n. 4, p. 436-446, 2009. |
Idioma: |
Inglês |
Conteúdo: |
There is an increased demand for high quality winegrapes in the São Francisco Valley, a new wine producing area in Brazil. As the grape quality is closely linked to the soil water status, understanding the effects of rootstock and irrigation management on grapevine water relations is essential to optimize yield and quality. This study was carried out to investigate the effects of irrigation strategies and rootstocks on water relations and scion vigour of field-grown grapevines in Petrolina, Pernambuco state, Brazil. The cultivars used as scions are Moscato Canelli and Syrah, both grafted onto IAC 572 and 1103 Paulsen rootstocks. The following water treatments were used: deficit irrigation, with holding water after veraison; and partial root-zone drying, supplying (100% of crop evapotranspiration) of the water loss to only one side of the root system after fruit set, alternating the sides periodically (about 24 days). In general, all treatments had values of pre-dawn leaf water potential higher than –0.2 MPa, suggesting absence of water stress. The vine water status was more affected by rootstock type than irrigation strategies. Both cultivars grafted on IAC 572 had the highest values of midday leaf water potential and stem water potential, measured on non-transpiring leaves, which were bagged with both plastic sheet and aluminum foil at least 1h before measurements. For both cultivars, the stomatal conductance (gs), transpiration (E) and leaf area index (LAI) were also more affected by roostsotck type than by irrigation strategies. The IAC 572 rootstock presented higher gs, E and LAI than the 1103 Paulsen. Differences in vegetative vigor of the scion grafted onto IAC 572 rootstocks were related to its higher leaf specific hydraulic conductance and deeper root system as compared to the 1103 Paulsen, which increased the water-extraction capability, resulting in a better vine water status. MenosThere is an increased demand for high quality winegrapes in the São Francisco Valley, a new wine producing area in Brazil. As the grape quality is closely linked to the soil water status, understanding the effects of rootstock and irrigation management on grapevine water relations is essential to optimize yield and quality. This study was carried out to investigate the effects of irrigation strategies and rootstocks on water relations and scion vigour of field-grown grapevines in Petrolina, Pernambuco state, Brazil. The cultivars used as scions are Moscato Canelli and Syrah, both grafted onto IAC 572 and 1103 Paulsen rootstocks. The following water treatments were used: deficit irrigation, with holding water after veraison; and partial root-zone drying, supplying (100% of crop evapotranspiration) of the water loss to only one side of the root system after fruit set, alternating the sides periodically (about 24 days). In general, all treatments had values of pre-dawn leaf water potential higher than –0.2 MPa, suggesting absence of water stress. The vine water status was more affected by rootstock type than irrigation strategies. Both cultivars grafted on IAC 572 had the highest values of midday leaf water potential and stem water potential, measured on non-transpiring leaves, which were bagged with both plastic sheet and aluminum foil at least 1h before measurements. For both cultivars, the stomatal conductance (gs), transpiration (E) and leaf area index (LAI) were also more ... Mostrar Tudo |
Palavras-Chave: |
Estresse hídrico; Porta-enxerto; Vale do São Francisco; Videira. |
Thesagro: |
Irrigação; Manejo; Produção; Uva; Viticultura; Vitis Vinifera. |
Thesaurus Nal: |
Grapes. |
Categoria do assunto: |
-- A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/31975/1/Bassoi.pdf
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Marc: |
LEADER 02867naa a2200337 a 4500 001 1257067 005 2022-11-30 008 2009 bl uuuu u00u1 u #d 100 1 $aSOUZA, C. R. de 245 $aWater relations of field-grown grapevines in the São Francisco Valley, Brazil, under different rootstocks and irrigation strategies. 260 $c2009 520 $aThere is an increased demand for high quality winegrapes in the São Francisco Valley, a new wine producing area in Brazil. As the grape quality is closely linked to the soil water status, understanding the effects of rootstock and irrigation management on grapevine water relations is essential to optimize yield and quality. This study was carried out to investigate the effects of irrigation strategies and rootstocks on water relations and scion vigour of field-grown grapevines in Petrolina, Pernambuco state, Brazil. The cultivars used as scions are Moscato Canelli and Syrah, both grafted onto IAC 572 and 1103 Paulsen rootstocks. The following water treatments were used: deficit irrigation, with holding water after veraison; and partial root-zone drying, supplying (100% of crop evapotranspiration) of the water loss to only one side of the root system after fruit set, alternating the sides periodically (about 24 days). In general, all treatments had values of pre-dawn leaf water potential higher than –0.2 MPa, suggesting absence of water stress. The vine water status was more affected by rootstock type than irrigation strategies. Both cultivars grafted on IAC 572 had the highest values of midday leaf water potential and stem water potential, measured on non-transpiring leaves, which were bagged with both plastic sheet and aluminum foil at least 1h before measurements. For both cultivars, the stomatal conductance (gs), transpiration (E) and leaf area index (LAI) were also more affected by roostsotck type than by irrigation strategies. The IAC 572 rootstock presented higher gs, E and LAI than the 1103 Paulsen. Differences in vegetative vigor of the scion grafted onto IAC 572 rootstocks were related to its higher leaf specific hydraulic conductance and deeper root system as compared to the 1103 Paulsen, which increased the water-extraction capability, resulting in a better vine water status. 650 $aGrapes 650 $aIrrigação 650 $aManejo 650 $aProdução 650 $aUva 650 $aViticultura 650 $aVitis Vinifera 653 $aEstresse hídrico 653 $aPorta-enxerto 653 $aVale do São Francisco 653 $aVideira 700 1 $aBASSOI, L. H. 700 1 $aLIMA FILHO, J. M. P. 700 1 $aSILVA, F. F. S. da 700 1 $aVIANA, L. H. 700 1 $aDANTAS, B. F. 700 1 $aPEREIRA, M. S. 700 1 $aRIBEIRO, P. R. de A. 773 $tScientia Agrícola$gv. 66, n. 4, p. 436-446, 2009.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
05/07/2017 |
Data da última atualização: |
16/11/2023 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
QUEIROZ, A. M. de; OLIVEIRA, M. V. N. d'; OLIVEIRA, L. C. de; FIGUEIREDO, E. O. |
Afiliação: |
Alisson Maia de Queiroz, Universidade Federal do Acre (Ufac); MARCUS VINICIO NEVES D OLIVEIRA, CPAF-Acre; LUIS CLAUDIO DE OLIVEIRA, CPAF-Acre; EVANDRO ORFANO FIGUEIREDO, CPAF-Acre. |
Título: |
Uso do LiDAR para quantificação da perda de biomassa produzida pelo corte de árvores e extração das toras em uma floresta tropical manejada no Estado do Acre. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 18., 2017, Santos. Anais... Santos: Inpe, 2017. |
Páginas: |
8 p. |
ISBN: |
978-85-17-00088-1 |
Idioma: |
Português |
Conteúdo: |
Monitoring forest operations on logged areas is essential to identify the impacts caused to the residual. Light Detection and Ranging (LiDAR) has proven an effective tool to the quantification of the structural parameters and biomass loss on tropical forests. The objective of this study was through the use of repeated LiDAR flights to elaborate a regression model to estimate the biomass of the logged trees and to assess the biomass losses produced by tree cutting and logs extraction in a forest management area. The study was carried out in an annual production area in the Antimary state forest in Acre State, western Amazon. The results demonstrated that: i. the use of crown projection area as independent variable was sufficient to produce a robust model to estimate the biomass of individual trees; ii. the number of trees extracted alone did not explained the biomass loss in the plots and iii. there was a strong relationship between the total biomass loss estimated by the subtraction of the biomass before and after logging and the biomass of the extracted trees. We suggest that this relationship should be used as a quality indicator of the applied forest management techniques. |
Palavras-Chave: |
Acre; Amazonia Occidental; Amazônia Ocidental; Análisis de regresión; Análisis estadístico; Biomasa; Bujari (AC); Desechos; Explotación forestal; Floresta Estadual do Antimary (AC); Geotécnica; Manejo florestal; Sena Madureira (AC); Teledetección; Western Amazon. |
Thesagro: |
Análise estatística; Biomassa; Estimativa; Exploração florestal; Extração da madeira; Perda; Raio laser; Regressão linear; Sensoriamento remoto. |
Thesaurus NAL: |
Biomass; Lásers; Lidar; Logging; Regression analysis; Remote sensing; Statistical analysis; Wastes. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161400/1/26342.pdf
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Marc: |
LEADER 02850nam a2200553 a 4500 001 2072022 005 2023-11-16 008 2017 bl uuuu u00u1 u #d 020 $a978-85-17-00088-1 100 1 $aQUEIROZ, A. M. de 245 $aUso do LiDAR para quantificação da perda de biomassa produzida pelo corte de árvores e extração das toras em uma floresta tropical manejada no Estado do Acre.$h[electronic resource] 260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 18., 2017, Santos. Anais... Santos: Inpe$c2017 300 $a8 p. 520 $aMonitoring forest operations on logged areas is essential to identify the impacts caused to the residual. Light Detection and Ranging (LiDAR) has proven an effective tool to the quantification of the structural parameters and biomass loss on tropical forests. The objective of this study was through the use of repeated LiDAR flights to elaborate a regression model to estimate the biomass of the logged trees and to assess the biomass losses produced by tree cutting and logs extraction in a forest management area. The study was carried out in an annual production area in the Antimary state forest in Acre State, western Amazon. The results demonstrated that: i. the use of crown projection area as independent variable was sufficient to produce a robust model to estimate the biomass of individual trees; ii. the number of trees extracted alone did not explained the biomass loss in the plots and iii. there was a strong relationship between the total biomass loss estimated by the subtraction of the biomass before and after logging and the biomass of the extracted trees. We suggest that this relationship should be used as a quality indicator of the applied forest management techniques. 650 $aBiomass 650 $aLásers 650 $aLidar 650 $aLogging 650 $aRegression analysis 650 $aRemote sensing 650 $aStatistical analysis 650 $aWastes 650 $aAnálise estatística 650 $aBiomassa 650 $aEstimativa 650 $aExploração florestal 650 $aExtração da madeira 650 $aPerda 650 $aRaio laser 650 $aRegressão linear 650 $aSensoriamento remoto 653 $aAcre 653 $aAmazonia Occidental 653 $aAmazônia Ocidental 653 $aAnálisis de regresión 653 $aAnálisis estadístico 653 $aBiomasa 653 $aBujari (AC) 653 $aDesechos 653 $aExplotación forestal 653 $aFloresta Estadual do Antimary (AC) 653 $aGeotécnica 653 $aManejo florestal 653 $aSena Madureira (AC) 653 $aTeledetección 653 $aWestern Amazon 700 1 $aOLIVEIRA, M. V. N. d' 700 1 $aOLIVEIRA, L. C. de 700 1 $aFIGUEIREDO, E. O.
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