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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
28/01/2019 |
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Data da última atualização: |
28/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAYA, A.; KISEKKA, I.; GIRMA, A.; HADGU, K. M.; TEGEBU, F. N.; KASSA, A. H.; FERREIRA-FILHO, H. R.; BELTRÃO, N. E.; AFEWERK, A.; ABADI, B.; TSEHAYE, Y.; MARTORANO, L. G.; ABRAHA, A. Z. |
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Afiliação: |
A. ARAYA, Mekelle University; I. KISEKKA, Kansas State University; A. GIRMA, Mekelle University; K. M. HADGU, World Agro-forestry; F. N. TEGEBU, Mekelle University; A. H. KASSA, Tigray Agricultural Research Institute, Mekelle Agricultural Research Center; H. R. FERREIRA-FILHO, UEPA; N. E. BELTRÃO, UEPA; A. AFEWERK, Mekelle University; B. ABADI, Aksum University; Y. TSEHAYE, Mekelle University; LUCIETA GUERREIRO MARTORANO, CPATU; A. Z. ABRAHA, Mekelle University. |
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Título: |
The challenges and opportunities for wheat production under future climate in Northern Ethiopia. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Agricultural Science, v. 155, n. 3, p. 379-393, Apr. 2017. |
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DOI: |
10.1017/S0021859616000460 |
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Idioma: |
Inglês |
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Conteúdo: |
Wheat is an important crop in the highlands of Northern Ethiopia and climate change is expected to be a major threat to wheat productivity. However, the potential impacts of climate change and adaptation on wheat yield has not been documented for this region. Wheat field experiments were carried out during the 2011?2013 cropping seasons in Northern Ethiopia to: (1) calibrate and evaluate Agricultural Production Systems sIMulator (APSIM)-wheat model for exploring the impacts of climate change and adaptation on wheat yield; (2) explore the response of wheat cultivar/s to possible change in climate and carbon dioxide (CO2) under optimal and sub-optimal fertilizer application and (3) assess the impact of climate change and adaptation practices on wheat yield based on integration of surveyed field data with climate simulations using multi-global climate models (GCMs; for short- and mid-term periods) for the Hintalo-Wajrat areas of Northern Ethiopia. The treatments were two levels of fertilizer (optimal and zero fertilization); treatments were replicated three times and arranged in a randomized complete block design. All required information for model calibration and evaluation were gathered from experimental studies. In addition, a household survey was conducted in 2012 in Northern Ethiopia. Following model calibration and performance testing, response of wheat to various nitrogen (N) fertilizer rates, planting date, temperature and combinations of other climate variables and CO2 were assessed. Crop simulations were conducted with future climate scenarios using 20 different GCMs and compared with a baseline. In addition, simulations were carried out using climate data from five different GCM with and without climate change adaptation practices. The simulated yield showed clear responses to changes in temperature, N fertilizer and CO2. Regardless of choice of cultivar, increasing temperatures alone (by up to 5 °C compared with the baseline) resulted in reduced yield while the addition of other factors (optimal fertilizer with elevated CO2) resulted in increased yield. Considering optimal fertilizer (64 kg/ha N) as an adaptation practice, wheat yield in the short-term (2010?2039) and mid-term (2040?2069) may increase at least by 40%, compared with sub-optimal N levels. Assuming CO2 and present wheat management is unchanged, simulation results based on 20 GCMs showed that median wheat yields will reduce by 10% in the short term and by 11% in the mid-term relative to the baseline data, whereas under changed CO2 with present management, wheat yield will increase slightly, by up to 8% in the short term and by up to 11% in the mid-term period, respectively. Wheat yield will substantially increase, by more than 100%, when simulated based on combined use of optimal planting date and fertilizer applications. Increased temperature in future scenarios will cause yield to decline, whereas CO2 is expected to have positive impacts on wheat yield. MenosWheat is an important crop in the highlands of Northern Ethiopia and climate change is expected to be a major threat to wheat productivity. However, the potential impacts of climate change and adaptation on wheat yield has not been documented for this region. Wheat field experiments were carried out during the 2011?2013 cropping seasons in Northern Ethiopia to: (1) calibrate and evaluate Agricultural Production Systems sIMulator (APSIM)-wheat model for exploring the impacts of climate change and adaptation on wheat yield; (2) explore the response of wheat cultivar/s to possible change in climate and carbon dioxide (CO2) under optimal and sub-optimal fertilizer application and (3) assess the impact of climate change and adaptation practices on wheat yield based on integration of surveyed field data with climate simulations using multi-global climate models (GCMs; for short- and mid-term periods) for the Hintalo-Wajrat areas of Northern Ethiopia. The treatments were two levels of fertilizer (optimal and zero fertilization); treatments were replicated three times and arranged in a randomized complete block design. All required information for model calibration and evaluation were gathered from experimental studies. In addition, a household survey was conducted in 2012 in Northern Ethiopia. Following model calibration and performance testing, response of wheat to various nitrogen (N) fertilizer rates, planting date, temperature and combinations of other climate variables and CO2... Mostrar Tudo |
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Thesagro: |
Clima; Mudança Climática; Produção; Produção de Alimentos; Trigo. |
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Thesaurus Nal: |
Ethiopia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03965naa a2200349 a 4500
001 2104859
005 2019-01-28
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1017/S0021859616000460$2DOI
100 1 $aARAYA, A.
245 $aThe challenges and opportunities for wheat production under future climate in Northern Ethiopia.$h[electronic resource]
260 $c2017
520 $aWheat is an important crop in the highlands of Northern Ethiopia and climate change is expected to be a major threat to wheat productivity. However, the potential impacts of climate change and adaptation on wheat yield has not been documented for this region. Wheat field experiments were carried out during the 2011?2013 cropping seasons in Northern Ethiopia to: (1) calibrate and evaluate Agricultural Production Systems sIMulator (APSIM)-wheat model for exploring the impacts of climate change and adaptation on wheat yield; (2) explore the response of wheat cultivar/s to possible change in climate and carbon dioxide (CO2) under optimal and sub-optimal fertilizer application and (3) assess the impact of climate change and adaptation practices on wheat yield based on integration of surveyed field data with climate simulations using multi-global climate models (GCMs; for short- and mid-term periods) for the Hintalo-Wajrat areas of Northern Ethiopia. The treatments were two levels of fertilizer (optimal and zero fertilization); treatments were replicated three times and arranged in a randomized complete block design. All required information for model calibration and evaluation were gathered from experimental studies. In addition, a household survey was conducted in 2012 in Northern Ethiopia. Following model calibration and performance testing, response of wheat to various nitrogen (N) fertilizer rates, planting date, temperature and combinations of other climate variables and CO2 were assessed. Crop simulations were conducted with future climate scenarios using 20 different GCMs and compared with a baseline. In addition, simulations were carried out using climate data from five different GCM with and without climate change adaptation practices. The simulated yield showed clear responses to changes in temperature, N fertilizer and CO2. Regardless of choice of cultivar, increasing temperatures alone (by up to 5 °C compared with the baseline) resulted in reduced yield while the addition of other factors (optimal fertilizer with elevated CO2) resulted in increased yield. Considering optimal fertilizer (64 kg/ha N) as an adaptation practice, wheat yield in the short-term (2010?2039) and mid-term (2040?2069) may increase at least by 40%, compared with sub-optimal N levels. Assuming CO2 and present wheat management is unchanged, simulation results based on 20 GCMs showed that median wheat yields will reduce by 10% in the short term and by 11% in the mid-term relative to the baseline data, whereas under changed CO2 with present management, wheat yield will increase slightly, by up to 8% in the short term and by up to 11% in the mid-term period, respectively. Wheat yield will substantially increase, by more than 100%, when simulated based on combined use of optimal planting date and fertilizer applications. Increased temperature in future scenarios will cause yield to decline, whereas CO2 is expected to have positive impacts on wheat yield.
650 $aEthiopia
650 $aClima
650 $aMudança Climática
650 $aProdução
650 $aProdução de Alimentos
650 $aTrigo
700 1 $aKISEKKA, I.
700 1 $aGIRMA, A.
700 1 $aHADGU, K. M.
700 1 $aTEGEBU, F. N.
700 1 $aKASSA, A. H.
700 1 $aFERREIRA-FILHO, H. R.
700 1 $aBELTRÃO, N. E.
700 1 $aAFEWERK, A.
700 1 $aABADI, B.
700 1 $aTSEHAYE, Y.
700 1 $aMARTORANO, L. G.
700 1 $aABRAHA, A. Z.
773 $tJournal of Agricultural Science$gv. 155, n. 3, p. 379-393, Apr. 2017.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
12/02/2016 |
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Data da última atualização: |
17/05/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ALVES, M. M. de A.; CÂNDIDO, M. J. D.; ROCHA, J. E. da S.; CAVALCANTE, A. C. R.; BUENO, L. G.; SANTOS, F. G. R. dos; OLIVEIRA, L. B. de. |
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Afiliação: |
Maria Monique de Araújo Alves; Magno José Duarte Cândido; JULIANA EVANGELISTA DA SILVA ROCHA, CNPC; ANA CLARA RODRIGUES CAVALCANTE, CNPC; LUICE GOMES BUENO, CNPC; Francisca Gizele Rodrigues dos Santos; Leydiane Bezerra de Oliveira. |
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Título: |
Avaliação de características estruturais de acessos de Urochloa mosambicensis. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 25., 2015, Fortaleza. Dimensões tecnológicas e sociais da zootecnia: anais. Fortaleza: Sociedade Brasileira de Zootecnia, 2015. 3 f. |
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Idioma: |
Português |
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Conteúdo: |
Resumo: Com o intuito de melhorar a produção de forragem no semiárido estão sendo introduzidas na região várias espécies de gramíneas, com a finalidade de aumentar os índices de produção animal e diversificação de forragem. Objetivou-se com o referente trabalho fornecer informações sobre características estruturais do capim-corrente. O experimento foi conduzido na casa de vegetação da Embrapa Caprinos e Ovinos, em Sobral, CE. O acompanhamento da dinâmica de desenvolvimento foliar ocorreu no período de março a abril de 2014, obedecendo à metodologia dos perfilhos marcados. O delineamento utilizado foi inteiramente casualizado, com 12 tratamentos e duas repetições. Foi realizada estimativa de biomassa por coleta destrutiva aos 30 dias. Não houve diferença significativa para a maioria dos componentes da biomassa. A variável que apresentou diferença estatística foi a relação LF/C. Para o componente vegetativo a melhor relação LF/C foi em Aust 101P1 e Aust 102P2 e a pior foi em Aust 99P1. Embora não exista diferença na produção total de biomassa entre os acessos, as relações de LF/C e de MV/MM permitem diferenciar os acessos, com destaque para Aust 103. [Structural characterization of Urochloa mosambicensis accesses]. Abstract: In order to improve forage production in the semiarid region are being introduced in several species of grasses, in order to increase animal production rates and diversification of forage. The objective of the related work provide information on structural characteristics of grass-current. The experiment was conducted in the greenhouse at Embrapa Goats and Sheep in Sobral, CE. The monitoring of leaf development dynamics occurred in the period March-April 2014, according to the methodology of marked tillers. The design was completely randomized with 12 treatments and two replications. Biomass estimation was performed by destructive collection after 30 days. There was no significant difference for most biomass components. The variable that showed statistical difference was the LF / C. For the vegetative component the best LF / C was in Aust 101P1 and 102P2 Aust and the worst was in Aust 99P1. Although there is no difference in biomass production among accessions, the sheet of relations: stem and living materials and dead material allow differentiation of access, especially Aust 103. MenosResumo: Com o intuito de melhorar a produção de forragem no semiárido estão sendo introduzidas na região várias espécies de gramíneas, com a finalidade de aumentar os índices de produção animal e diversificação de forragem. Objetivou-se com o referente trabalho fornecer informações sobre características estruturais do capim-corrente. O experimento foi conduzido na casa de vegetação da Embrapa Caprinos e Ovinos, em Sobral, CE. O acompanhamento da dinâmica de desenvolvimento foliar ocorreu no período de março a abril de 2014, obedecendo à metodologia dos perfilhos marcados. O delineamento utilizado foi inteiramente casualizado, com 12 tratamentos e duas repetições. Foi realizada estimativa de biomassa por coleta destrutiva aos 30 dias. Não houve diferença significativa para a maioria dos componentes da biomassa. A variável que apresentou diferença estatística foi a relação LF/C. Para o componente vegetativo a melhor relação LF/C foi em Aust 101P1 e Aust 102P2 e a pior foi em Aust 99P1. Embora não exista diferença na produção total de biomassa entre os acessos, as relações de LF/C e de MV/MM permitem diferenciar os acessos, com destaque para Aust 103. [Structural characterization of Urochloa mosambicensis accesses]. Abstract: In order to improve forage production in the semiarid region are being introduced in several species of grasses, in order to increase animal production rates and diversification of forage. The objective of the related work provide information on structural... Mostrar Tudo |
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Palavras-Chave: |
Capim corrente; Capim Urocloa; Fase reprodutiva; Fase vegetativa; Feed crops; Feed grasses; Reproductive stage; Vegetative stage. |
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Thesagro: |
Biomassa; Gramínea forrageira; Urochloa mosambicensis. |
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Thesaurus NAL: |
Biomass. |
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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/138843/1/cnpc-2015-Avaliacao-de-caracteristicas.pdf
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Marc: |
LEADER 03453nam a2200325 a 4500
001 2036744
005 2022-05-17
008 2015 bl uuuu u00u1 u #d
100 1 $aALVES, M. M. de A.
245 $aAvaliação de características estruturais de acessos de Urochloa mosambicensis.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE ZOOTECNIA, 25., 2015, Fortaleza. Dimensões tecnológicas e sociais da zootecnia: anais. Fortaleza: Sociedade Brasileira de Zootecnia, 2015. 3 f.$c2015
520 $aResumo: Com o intuito de melhorar a produção de forragem no semiárido estão sendo introduzidas na região várias espécies de gramíneas, com a finalidade de aumentar os índices de produção animal e diversificação de forragem. Objetivou-se com o referente trabalho fornecer informações sobre características estruturais do capim-corrente. O experimento foi conduzido na casa de vegetação da Embrapa Caprinos e Ovinos, em Sobral, CE. O acompanhamento da dinâmica de desenvolvimento foliar ocorreu no período de março a abril de 2014, obedecendo à metodologia dos perfilhos marcados. O delineamento utilizado foi inteiramente casualizado, com 12 tratamentos e duas repetições. Foi realizada estimativa de biomassa por coleta destrutiva aos 30 dias. Não houve diferença significativa para a maioria dos componentes da biomassa. A variável que apresentou diferença estatística foi a relação LF/C. Para o componente vegetativo a melhor relação LF/C foi em Aust 101P1 e Aust 102P2 e a pior foi em Aust 99P1. Embora não exista diferença na produção total de biomassa entre os acessos, as relações de LF/C e de MV/MM permitem diferenciar os acessos, com destaque para Aust 103. [Structural characterization of Urochloa mosambicensis accesses]. Abstract: In order to improve forage production in the semiarid region are being introduced in several species of grasses, in order to increase animal production rates and diversification of forage. The objective of the related work provide information on structural characteristics of grass-current. The experiment was conducted in the greenhouse at Embrapa Goats and Sheep in Sobral, CE. The monitoring of leaf development dynamics occurred in the period March-April 2014, according to the methodology of marked tillers. The design was completely randomized with 12 treatments and two replications. Biomass estimation was performed by destructive collection after 30 days. There was no significant difference for most biomass components. The variable that showed statistical difference was the LF / C. For the vegetative component the best LF / C was in Aust 101P1 and 102P2 Aust and the worst was in Aust 99P1. Although there is no difference in biomass production among accessions, the sheet of relations: stem and living materials and dead material allow differentiation of access, especially Aust 103.
650 $aBiomass
650 $aBiomassa
650 $aGramínea forrageira
650 $aUrochloa mosambicensis
653 $aCapim corrente
653 $aCapim Urocloa
653 $aFase reprodutiva
653 $aFase vegetativa
653 $aFeed crops
653 $aFeed grasses
653 $aReproductive stage
653 $aVegetative stage
700 1 $aCÂNDIDO, M. J. D.
700 1 $aROCHA, J. E. da S.
700 1 $aCAVALCANTE, A. C. R.
700 1 $aBUENO, L. G.
700 1 $aSANTOS, F. G. R. dos
700 1 $aOLIVEIRA, L. B. de
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