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Registro Completo |
Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
29/11/2017 |
Data da última atualização: |
18/06/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PADOVAN, M. da P.; BROOK, R. M.; BARRIOS, M.; CRUZ-CASTILHO, J. B.; VILCHEZ-MENDOZA; COSTA, A. N. da.; RAPIDEL, B. |
Afiliação: |
Maria da Penha Padovan, Incaper; R.M. Brook, CATIE; M. Barrios, CATIE; J.B. Cruz-Castillo, UNA; S.J. Vilchez-Mendoza, CATIE; Aureliano Nogueira da Costa, Incaper; B. Rapidel, CIRAD. |
Título: |
Water loss by transpiration and soil evaporation in coffee shaded by Tabebuia rosea Bertol. and Simarouba glauca dc. compared to unshaded coffee in sub-optimal environmental conditions |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 248, p. 1-14, 2018. |
Idioma: |
Inglês |
Conteúdo: |
There is increasing concern that due to land pressure and the need to maximize income, smallholder coffee farmers are increasingly being forced to cultivate in areas which are considered to be sub-optimal for coffee. Little is known about optimal coffee and tree combinations in these conditions and the degree to which crops and trees compete or are synergistic. In environmental conditions which were sub optimal for coffee cultivation in Nicaragua (1470 mm annual rainfall, 27 °C mean annual temperature and 455 m altitude compared to optima of 2000 mm, 23?24 °C and altitude between 1000 and 1400 m at that latitude, respectively), coffee and shade tree transpiration and soil evaporation were directly and separately measured in agroforestry (AFS) and full sun systems (FS). AFS was found to be a more efficient water user than FS because a greater proportion of rainfall was used by plant transpiration rather than being lost by soil evaporation. Plant transpiration accounted for 83% and 69% of evapotranspiration while soil evaporation represented 17% and 31%, in AFS and FS respectively. In AFS most of the water transpiration was due to coffee (72.5%) and much less by deciduous Tabebuia rosea (19%) and evergreen Simarouba glauca shade trees (8.5%). Furthermore, the study demonstrated the vastly different behaviour in water use by the shade trees. When in leaf, Tabebuia rosea transpired at four to six times the rate of evergreen Simarouba glauca, although crown sizes were similar. Contrasting precipitation between two consecutive years of study demonstrated that competition for water between coffee and shade tree occurred only in a severe dry season when coffee leaf water potential (LWP) reached its lowest values of ?2.33 MPa in AFS. It was concluded that in most circumstances there was sufficient water for both coffee and trees, that coffee in AFS was a more efficient user of water than FS coffee, and that evergreen Simarouba glauca was more suitable as coffee shade tree compared to deciduous Tabebuia rosea in the sub optimal environmental condition studied MenosThere is increasing concern that due to land pressure and the need to maximize income, smallholder coffee farmers are increasingly being forced to cultivate in areas which are considered to be sub-optimal for coffee. Little is known about optimal coffee and tree combinations in these conditions and the degree to which crops and trees compete or are synergistic. In environmental conditions which were sub optimal for coffee cultivation in Nicaragua (1470 mm annual rainfall, 27 °C mean annual temperature and 455 m altitude compared to optima of 2000 mm, 23?24 °C and altitude between 1000 and 1400 m at that latitude, respectively), coffee and shade tree transpiration and soil evaporation were directly and separately measured in agroforestry (AFS) and full sun systems (FS). AFS was found to be a more efficient water user than FS because a greater proportion of rainfall was used by plant transpiration rather than being lost by soil evaporation. Plant transpiration accounted for 83% and 69% of evapotranspiration while soil evaporation represented 17% and 31%, in AFS and FS respectively. In AFS most of the water transpiration was due to coffee (72.5%) and much less by deciduous Tabebuia rosea (19%) and evergreen Simarouba glauca shade trees (8.5%). Furthermore, the study demonstrated the vastly different behaviour in water use by the shade trees. When in leaf, Tabebuia rosea transpired at four to six times the rate of evergreen Simarouba glauca, although crown sizes were similar. Co... Mostrar Tudo |
Palavras-Chave: |
Coffee agroforestry; Coffee leaf water potential; Competition for water; Evapotranspiration. |
Categoria do assunto: |
J Meteorologia |
URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/2879/1/BRT-PadovanBrooketal2017AgriculturalandForestMeteorology-padovan.pdf
https://www.sciencedirect.com/science/article/pii/S0168192317302873
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Marc: |
LEADER 02921naa a2200241 a 4500 001 1017263 005 2019-06-18 008 2018 bl uuuu u00u1 u #d 100 1 $aPADOVAN, M. da P. 245 $aWater loss by transpiration and soil evaporation in coffee shaded by Tabebuia rosea Bertol. and Simarouba glauca dc. compared to unshaded coffee in sub-optimal environmental conditions$h[electronic resource] 260 $c2018 520 $aThere is increasing concern that due to land pressure and the need to maximize income, smallholder coffee farmers are increasingly being forced to cultivate in areas which are considered to be sub-optimal for coffee. Little is known about optimal coffee and tree combinations in these conditions and the degree to which crops and trees compete or are synergistic. In environmental conditions which were sub optimal for coffee cultivation in Nicaragua (1470 mm annual rainfall, 27 °C mean annual temperature and 455 m altitude compared to optima of 2000 mm, 23?24 °C and altitude between 1000 and 1400 m at that latitude, respectively), coffee and shade tree transpiration and soil evaporation were directly and separately measured in agroforestry (AFS) and full sun systems (FS). AFS was found to be a more efficient water user than FS because a greater proportion of rainfall was used by plant transpiration rather than being lost by soil evaporation. Plant transpiration accounted for 83% and 69% of evapotranspiration while soil evaporation represented 17% and 31%, in AFS and FS respectively. In AFS most of the water transpiration was due to coffee (72.5%) and much less by deciduous Tabebuia rosea (19%) and evergreen Simarouba glauca shade trees (8.5%). Furthermore, the study demonstrated the vastly different behaviour in water use by the shade trees. When in leaf, Tabebuia rosea transpired at four to six times the rate of evergreen Simarouba glauca, although crown sizes were similar. Contrasting precipitation between two consecutive years of study demonstrated that competition for water between coffee and shade tree occurred only in a severe dry season when coffee leaf water potential (LWP) reached its lowest values of ?2.33 MPa in AFS. It was concluded that in most circumstances there was sufficient water for both coffee and trees, that coffee in AFS was a more efficient user of water than FS coffee, and that evergreen Simarouba glauca was more suitable as coffee shade tree compared to deciduous Tabebuia rosea in the sub optimal environmental condition studied 653 $aCoffee agroforestry 653 $aCoffee leaf water potential 653 $aCompetition for water 653 $aEvapotranspiration 700 1 $aBROOK, R. M. 700 1 $aBARRIOS, M. 700 1 $aCRUZ-CASTILHO, J. B. 700 1 $aVILCHEZ-MENDOZA 700 1 $aCOSTA, A. N. da. 700 1 $aRAPIDEL, B. 773 $tAgricultural and Forest Meteorology$gv. 248, p. 1-14, 2018.
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Biblioteca Rui Tendinha (BRT) |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
09/04/2021 |
Data da última atualização: |
19/08/2021 |
Tipo da produção científica: |
Documentos |
Autoria: |
CUNHA, E. G. da.; DALBOM, F. L.; MELO, C. A.; ALVES, A. F.; MORAIS, F. M. de.; OLIVEIRA, G. M. de |
Afiliação: |
Erivelton Gonçalves da Cunha, Incaper; Fabio Lopes Dalbom, Incaper; Carlos Antônio Melo, Incaper; Andressa Ferreira Alves, Incaper; Fabio Morandi de Morais, Incaper; Galderes Magalhães de Oliveira, Incaper. |
Título: |
Garantia da qualidade orgânica : certificação orgânica e controle social. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Vitória, ES: Incaper, 2021. |
Descrição Física: |
24 p. : il. Color. |
Série: |
(Incaper, Documentos, 280). |
ISSN: |
1519-2059 |
Idioma: |
Português |
Conteúdo: |
A agricultura orgânica é um sistema de produção que segue princípios da agroecologia. Esta agricultura utiliza práticas sustentáveis que prezam pela produção de alimentos de qualidade e preservação dos recursos naturais. Muitos produtores trabalham em seus empreendimentos no sistema de produção orgânico, porém não conseguem agregar valor a seus produtos devido à falta de garantia da qualidade orgânica destes. A certificação orgânica é a forma de garantir, a qualquer consumidor, que aquele produto foi produzido utilizando as técnicas e práticas do sistema de produção orgânico, respeitando todas as normas e os regulamentos da legislação vigente... |
Palavras-Chave: |
Certificação Orgânica; Controle Social; Produto Orgânico. |
Thesagro: |
Agricultura Orgânica; Certificação de Produto; Legislação; Produção Orgânica. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/4187/1/Doc280-certificacao-organica-Incaper.pdf
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Marc: |
LEADER 01528nam a2200289 a 4500 001 1023126 005 2021-08-19 008 2021 bl uuuu u0uu1 u #d 022 $a1519-2059 100 1 $aCUNHA, E. G. da. 245 $aGarantia da qualidade orgânica$bcertificação orgânica e controle social.$h[electronic resource] 260 $aVitória, ES: Incaper$c2021 300 $c24 p. : il. Color. 490 $a(Incaper, Documentos, 280). 520 $aA agricultura orgânica é um sistema de produção que segue princípios da agroecologia. Esta agricultura utiliza práticas sustentáveis que prezam pela produção de alimentos de qualidade e preservação dos recursos naturais. Muitos produtores trabalham em seus empreendimentos no sistema de produção orgânico, porém não conseguem agregar valor a seus produtos devido à falta de garantia da qualidade orgânica destes. A certificação orgânica é a forma de garantir, a qualquer consumidor, que aquele produto foi produzido utilizando as técnicas e práticas do sistema de produção orgânico, respeitando todas as normas e os regulamentos da legislação vigente... 650 $aAgricultura Orgânica 650 $aCertificação de Produto 650 $aLegislação 650 $aProdução Orgânica 653 $aCertificação Orgânica 653 $aControle Social 653 $aProduto Orgânico 700 1 $aDALBOM, F. L. 700 1 $aMELO, C. A. 700 1 $aALVES, A. F. 700 1 $aMORAIS, F. M. de. 700 1 $aOLIVEIRA, G. M. de
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