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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
03/03/2011 |
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Data da última atualização: |
15/03/2011 |
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Autoria: |
CARVALHO, C. H. S. de; BENTO, M. A.; MATIELLO, J. B.; ALMEIDA, S. R.; FERREIRA, R. A.; PADILHA, L.; VILELA, A. F. |
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Afiliação: |
CARLOS HENRIQUE S DE CARVALHO, SAPC; MAPA/FUNDAÇÃO PRÓ CAFÉ; MAPA/FUNDAÇÃO PRÓ CAFÉ; MAPA/FUNDAÇÃO PRÓ CAFÉ; MAPA/FUNDAÇÃO PRÓ CAFÉ; LILIAN PADILHA, SAPC; MAPA/FUNDAÇÃO PRÓ CAFÉ. |
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Título: |
Identification of coffee genotypes more adapted to areas with water deficit during fall and winter time. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22., 2008, Campinas. |
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Idioma: |
Inglês |
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Conteúdo: |
Although most of the Brazilian coffee growing areas are located in regions with enough rainfall, a significant amount is cultivated in regions subjected to water deficit during fall and winter time. This situation reduces coffee yield, since Brazilian coffee cultivars are not adapted to this condition. This work was conducted to evaluate the response to irrigation and aiming to select coffee genotypes that are more adapted to environments subjected to water constrain. The work was carried out in Coromandel, MG, Brazil, a region characterized as marginal to coffee cultivation, due to the shortage of rainfall during fall and winter time. A field experiment was set in January of 2004 using a randomized block designed, with 30 genotypes, six plants per plot and four replications, with and without drip irrigation. During the first 2.5 years all the treatments were irrigated to allow proper plant growth and better
homogeneity. Yield (kg/tree) was evaluated in July 2007 and, in average, fruit production was increased in 50% due to irrigation in all the genotypes. The highest response to irrigation was observed in the late maturity genotypes, such as Red Obatã, Yellow Catucaí (late) line 30 cv. 2 and Yellow Bem-te-vi, with 223.3%, 120.9% and 110.9% of yield increase, respectively. On the other hand, the irrigation did not significantly increased fruit production of early maturity genotypes, as observed for Catucaí 785-15, Yellow Catucaí 24/137 (early) cv. 900 and Siriema. Since the early maturity cultivars differentiate flowers in the beginning of the
year, when water availability is still not a limiting factor, and the late maturity cultivars flower differentiation occurs later on, during the dry season, it is suggested that the early maturity cultivars are more adapted to those conditions. These data indicates that early maturity genotypes may be an interesting genetic source for the development of coffee cultivars more adapted to regions with low rainfall during fall/winter time. MenosAlthough most of the Brazilian coffee growing areas are located in regions with enough rainfall, a significant amount is cultivated in regions subjected to water deficit during fall and winter time. This situation reduces coffee yield, since Brazilian coffee cultivars are not adapted to this condition. This work was conducted to evaluate the response to irrigation and aiming to select coffee genotypes that are more adapted to environments subjected to water constrain. The work was carried out in Coromandel, MG, Brazil, a region characterized as marginal to coffee cultivation, due to the shortage of rainfall during fall and winter time. A field experiment was set in January of 2004 using a randomized block designed, with 30 genotypes, six plants per plot and four replications, with and without drip irrigation. During the first 2.5 years all the treatments were irrigated to allow proper plant growth and better
homogeneity. Yield (kg/tree) was evaluated in July 2007 and, in average, fruit production was increased in 50% due to irrigation in all the genotypes. The highest response to irrigation was observed in the late maturity genotypes, such as Red Obatã, Yellow Catucaí (late) line 30 cv. 2 and Yellow Bem-te-vi, with 223.3%, 120.9% and 110.9% of yield increase, respectively. On the other hand, the irrigation did not significantly increased fruit production of early maturity genotypes, as observed for Catucaí 785-15, Yellow Catucaí 24/137 (early) cv. 900 and Siriema. Since the ... Mostrar Tudo |
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Palavras-Chave: |
Coffee. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02630nam a2200193 a 4500
001 1879901
005 2011-03-15
008 2008 bl uuuu u01u1 u #d
100 1 $aCARVALHO, C. H. S. de
245 $aIdentification of coffee genotypes more adapted to areas with water deficit during fall and winter time.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22., 2008, Campinas.$c2008
520 $aAlthough most of the Brazilian coffee growing areas are located in regions with enough rainfall, a significant amount is cultivated in regions subjected to water deficit during fall and winter time. This situation reduces coffee yield, since Brazilian coffee cultivars are not adapted to this condition. This work was conducted to evaluate the response to irrigation and aiming to select coffee genotypes that are more adapted to environments subjected to water constrain. The work was carried out in Coromandel, MG, Brazil, a region characterized as marginal to coffee cultivation, due to the shortage of rainfall during fall and winter time. A field experiment was set in January of 2004 using a randomized block designed, with 30 genotypes, six plants per plot and four replications, with and without drip irrigation. During the first 2.5 years all the treatments were irrigated to allow proper plant growth and better homogeneity. Yield (kg/tree) was evaluated in July 2007 and, in average, fruit production was increased in 50% due to irrigation in all the genotypes. The highest response to irrigation was observed in the late maturity genotypes, such as Red Obatã, Yellow Catucaí (late) line 30 cv. 2 and Yellow Bem-te-vi, with 223.3%, 120.9% and 110.9% of yield increase, respectively. On the other hand, the irrigation did not significantly increased fruit production of early maturity genotypes, as observed for Catucaí 785-15, Yellow Catucaí 24/137 (early) cv. 900 and Siriema. Since the early maturity cultivars differentiate flowers in the beginning of the year, when water availability is still not a limiting factor, and the late maturity cultivars flower differentiation occurs later on, during the dry season, it is suggested that the early maturity cultivars are more adapted to those conditions. These data indicates that early maturity genotypes may be an interesting genetic source for the development of coffee cultivars more adapted to regions with low rainfall during fall/winter time.
653 $aCoffee
700 1 $aBENTO, M. A.
700 1 $aMATIELLO, J. B.
700 1 $aALMEIDA, S. R.
700 1 $aFERREIRA, R. A.
700 1 $aPADILHA, L.
700 1 $aVILELA, A. F.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
30/10/2018 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
OLIVEIRA, S. A. de; TAVARES, S. R. de L.; BARBOSA, M. C. |
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Afiliação: |
SHIRLEY APARECIDA DE OLIVEIRA, UFRJ; SILVIO ROBERTO DE LUCENA TAVARES, CNPS; MARIA CLARA BARBOSA, UFRJ. |
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Título: |
Pb Adsorption on soil typical to an ammunition destruction site. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Bulletin of Environmental Contamination and Toxicology, v. 101, n. 3, p. 365-371, Sept. 2018. |
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DOI: |
https://doi.org/10.1007/s00128-018-2403-8 |
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Idioma: |
Inglês |
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Conteúdo: |
Pb, one of the constituents of ammunition, was identified as a contaminant in an ammunition destruction site. The present study aimed to assess Pb adsorption in the horizons of an uncontaminated representative soil profile of the region where the ammunition destruction site is located. Batch test experiments were performed to determine Pb adsorption in soil horizons, using solutions with natural and modified pH. The ISOFIT software was used to select the isotherm model that best fit Pb adsorption in soil horizons. The results showed that the Langmuir model is the best fit, because it presented the lowest corrected Akaike information criterion value. In addition, the graphical analysis indicated a Langmuir-type isotherm. The Langmuir isotherm parameter (Q0) indicated lower Pb adsorption capacity in the surface soil layers when compared with that in the deeper layers. The change in the initial solution pH influenced Pb adsorption, mainly in superficial horizons. Thus, the risk of soil Pb contamination might be more pronounced in the surface soil layers. |
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Thesagro: |
Contaminação; Solo. |
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Thesaurus NAL: |
Soil; Sorption isotherms. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01715naa a2200205 a 4500
001 2098451
005 2021-11-11
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s00128-018-2403-8$2DOI
100 1 $aOLIVEIRA, S. A. de
245 $aPb Adsorption on soil typical to an ammunition destruction site.$h[electronic resource]
260 $c2018
520 $aPb, one of the constituents of ammunition, was identified as a contaminant in an ammunition destruction site. The present study aimed to assess Pb adsorption in the horizons of an uncontaminated representative soil profile of the region where the ammunition destruction site is located. Batch test experiments were performed to determine Pb adsorption in soil horizons, using solutions with natural and modified pH. The ISOFIT software was used to select the isotherm model that best fit Pb adsorption in soil horizons. The results showed that the Langmuir model is the best fit, because it presented the lowest corrected Akaike information criterion value. In addition, the graphical analysis indicated a Langmuir-type isotherm. The Langmuir isotherm parameter (Q0) indicated lower Pb adsorption capacity in the surface soil layers when compared with that in the deeper layers. The change in the initial solution pH influenced Pb adsorption, mainly in superficial horizons. Thus, the risk of soil Pb contamination might be more pronounced in the surface soil layers.
650 $aSoil
650 $aSorption isotherms
650 $aContaminação
650 $aSolo
700 1 $aTAVARES, S. R. de L.
700 1 $aBARBOSA, M. C.
773 $tBulletin of Environmental Contamination and Toxicology$gv. 101, n. 3, p. 365-371, Sept. 2018.
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