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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/10/2009 |
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Data da última atualização: |
31/03/2010 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MELO, K. E. de O.; CARVALHO, H. W. L. de; FUKUDA, W. M. G.; OLIVEIRA, I. R. de; RANGEL, M. A. S.; RANGEL, J. H. de A.; SILVA, B. S. de F.; MENEZES, A. F. |
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Afiliação: |
Kátia Estelina de Oliveira Melo, CPATC; Hélio Wilson Lemos de Carvalho, CPATC; Wânia Maria Gonçalves Fukuda, CNPMF; Ivênio Rubens de Oliveira, CPATC; Marco Antônio Sedrez Rangel, CNPMF; José Henrique de Albuquerque Rangel, CPATC; Bruno Santana de Freitas Silva, UFS; Alba Freitas Menezes, CPATC. |
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Título: |
Avaliação de cultivares de mandioca em diferentes épocas de colheita na Microrregião do Agreste de Lagarto, no Estado de Sergipe. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Revista Raízes e Amidos Tropicais, Botucatu, v. 5, p. 606-610, jul. 2009. 1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Edição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais. Botucatu, jul. 2009. |
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Conteúdo: |
O objetivo deste trabalho foi avaliar diversas cultivares de mandioca em diferentes épocas de colheita, na Microrregião Homogênea do Agreste de Lagarto, no Estado de Sergipe.Os ensaios foram realizados na safra 2006/2007, utilizando-se o delineamento experimental em blocos ao acaso, com três repetições, dos dezenove tratamentos. A variedade Irará, com 72,6t/ha, manteve alta performance produtiva no decorrer das quatro colheitas realizadas, constituindo-se, assim, em ótima alternativa para a agricultura regional. As variedades Cigana, Jalé, Lagoão, Mulatinha e Caravela, também se destacaram, com rendimentos de raízes entre 42,9t/ha a 46,9t/ha, na média das colheitas, tornando-se também de grande interesse para exploração comercial nessas áreas. |
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Palavras-Chave: |
Genótipos. |
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Thesagro: |
Manihot Esculenta. |
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Thesaurus Nal: |
cassava. |
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Categoria do assunto: |
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Marc: |
LEADER 01712naa a2200253 a 4500
001 1656148
005 2010-03-31
008 2009 bl uuuu u00u1 u #d
100 1 $aMELO, K. E. de O.
245 $aAvaliação de cultivares de mandioca em diferentes épocas de colheita na Microrregião do Agreste de Lagarto, no Estado de Sergipe.
260 $c2009
500 $aEdição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais. Botucatu, jul. 2009.
520 $aO objetivo deste trabalho foi avaliar diversas cultivares de mandioca em diferentes épocas de colheita, na Microrregião Homogênea do Agreste de Lagarto, no Estado de Sergipe.Os ensaios foram realizados na safra 2006/2007, utilizando-se o delineamento experimental em blocos ao acaso, com três repetições, dos dezenove tratamentos. A variedade Irará, com 72,6t/ha, manteve alta performance produtiva no decorrer das quatro colheitas realizadas, constituindo-se, assim, em ótima alternativa para a agricultura regional. As variedades Cigana, Jalé, Lagoão, Mulatinha e Caravela, também se destacaram, com rendimentos de raízes entre 42,9t/ha a 46,9t/ha, na média das colheitas, tornando-se também de grande interesse para exploração comercial nessas áreas.
650 $acassava
650 $aManihot Esculenta
653 $aGenótipos
700 1 $aCARVALHO, H. W. L. de
700 1 $aFUKUDA, W. M. G.
700 1 $aOLIVEIRA, I. R. de
700 1 $aRANGEL, M. A. S.
700 1 $aRANGEL, J. H. de A.
700 1 $aSILVA, B. S. de F.
700 1 $aMENEZES, A. F.
773 $tRevista Raízes e Amidos Tropicais, Botucatu$gv. 5, p. 606-610, jul. 2009. 1 CD-ROM.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/12/2023 |
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Data da última atualização: |
04/12/2023 |
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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: |
PFANNERSTILL, E. Y.; REIJRINK, N. G.; EDTBAUER, A.; RINGSDORF, A.; ZANNONI, N.; ARAUJO, A. C. de; DITAS, F.; HOLANDA, B. A.; SÁ, M. O.; TSOKANKUNKU, A.; WALTER, D.; WOLFF, S.; LAVRIC, J. V.; PÖHLKER, C.; SÖRGEL, M.; WILLIAMS, J. |
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Afiliação: |
EVA Y. PFANNERSTILL, Max Planck Institute for Chemistry; NINA G. REIJRINK, Max Planck Institute for Chemistry / IMT Lille Douai; ACHIM EDTBAUER, Max Planck Institute for Chemistry; AKIMA RINGSDORF, Max Planck Institute for Chemistry; NORA ZANNONI, Max Planck Institute for Chemistry; ALESSANDRO CARIOCA DE ARAUJO, CPATU; FLORIAN DITAS, Max Planck Institute for Chemistry; BRUNA A. HOLANDA, Max Planck Institute for Chemistry; MARTA O. SÁ, INPA; ANYWHERE TSOKANKUNKU, Max Planck Institute for Chemistry; DAVID WALTER, Max Planck Institute for Chemistry; STEFAN WOLFF, Max Planck Institute for Chemistry; JOŠT V. LAVRIC, Max Planck Institute for Biogeochemistry; CHRISTOPHER PÖHLKER, Max Planck Institute for Chemistry; MATTHIAS SÖRGEL, Max Planck Institute for Chemistry; JONATHAN WILLIAMS, Max Planck Institute for Chemistry / The Cyprus Institute. |
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Título: |
Total OH reactivity over the Amazon rainforest: variability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Atmospheric Chemistry and Physics, v. 21, n. 8, p. 6231-6256, 2021. |
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DOI: |
https://doi.org/10.5194/acp-21-6231-2021 |
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Idioma: |
Inglês |
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Conteúdo: |
The tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and standard deviation of 19.9 ± 6.2 -1 during a wet-dry transition season with frequent precipitation; 23.7 ± 6.5 -1 during the wet season; and the highest average OH reactivities during two dry-season observation periods with 28.1 ± 7.9 -1 and 29.1 ± 10.8 -1, respectively. The effects of different environmental parameters on the OH sink were investigated, and quantified, where possible. Precipitation caused short-term spikes in total OH reactivity, which were followed by below-normal OH reactivity for several hours. Biomass burning increased total OH reactivity by 2.7 to 9.5 -1. We present a temperature-dependent parameterization of OH reactivity that could be applied in future models of the OH sink to further reduce our knowledge gaps in tropical-forest OH chemistry MenosThe tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and ... Mostrar Tudo |
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Palavras-Chave: |
Compostos orgânicos voláteis. |
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Thesagro: |
Floresta Tropical. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159141/1/Total-OH.pdf
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Marc: |
LEADER 03354naa a2200349 a 4500
001 2159141
005 2023-12-04
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5194/acp-21-6231-2021$2DOI
100 1 $aPFANNERSTILL, E. Y.
245 $aTotal OH reactivity over the Amazon rainforest$bvariability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure.$h[electronic resource]
260 $c2021
520 $aThe tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and standard deviation of 19.9 ± 6.2 -1 during a wet-dry transition season with frequent precipitation; 23.7 ± 6.5 -1 during the wet season; and the highest average OH reactivities during two dry-season observation periods with 28.1 ± 7.9 -1 and 29.1 ± 10.8 -1, respectively. The effects of different environmental parameters on the OH sink were investigated, and quantified, where possible. Precipitation caused short-term spikes in total OH reactivity, which were followed by below-normal OH reactivity for several hours. Biomass burning increased total OH reactivity by 2.7 to 9.5 -1. We present a temperature-dependent parameterization of OH reactivity that could be applied in future models of the OH sink to further reduce our knowledge gaps in tropical-forest OH chemistry
650 $aAmazonia
650 $aFloresta Tropical
653 $aCompostos orgânicos voláteis
700 1 $aREIJRINK, N. G.
700 1 $aEDTBAUER, A.
700 1 $aRINGSDORF, A.
700 1 $aZANNONI, N.
700 1 $aARAUJO, A. C. de
700 1 $aDITAS, F.
700 1 $aHOLANDA, B. A.
700 1 $aSÁ, M. O.
700 1 $aTSOKANKUNKU, A.
700 1 $aWALTER, D.
700 1 $aWOLFF, S.
700 1 $aLAVRIC, J. V.
700 1 $aPÖHLKER, C.
700 1 $aSÖRGEL, M.
700 1 $aWILLIAMS, J.
773 $tAtmospheric Chemistry and Physics$gv. 21, n. 8, p. 6231-6256, 2021.
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Embrapa Amazônia Oriental (CPATU) |
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