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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Unidades Centrais. |
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Data corrente: |
18/03/1999 |
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Data da última atualização: |
10/11/2016 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
CARVALHO, R. de A.; FERREIRA, C. A. P.; SILVA, J. F. de A. F. da. |
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Afiliação: |
RUI DE AMORIM CARVALHO, CPATU; CÉLIO ARMANDO PALHETA FERREIRA, CPATU; JOSÉ FRANCISCO DE ASSIS FELICIANO DA SILVA, CPATU. |
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Título: |
Estimativa de custo de produção de sementes selecionadas de caupi, no município de Tracuateua, Pará. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Belém, PA: EMBRAPA-CPATU, 1998. |
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Páginas: |
3 p. |
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Série: |
(EMBRAPA-CPATU. Comunicado técnico, 85). |
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Idioma: |
Português |
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Conteúdo: |
o caupi (Vigna unguiculata (L.) walp.) no Estado do Pará tem sido um componente importante nos sistemas de produção. No entanto, sua produção é reduzida, mesmo nas áreas de alto potencial de cultivo, em decorrência do uso de cultivares que, na maioria das vezes, não se adaptam ao sistema explorado e que não atendem às exigências do mercado consumidor. Portanto, a produção de sementes selecionadas é fator importante para que se promova a melhoria do cultivo e a estabilidade da produção da cultura do caupi, no Estado. |
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Palavras-Chave: |
Brasil; Caupi; Costs; Pará; Produção de semente; Seed production; Tracuateua. |
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Thesagro: |
Custo; Feijão de corda; Vigna unguiculata. |
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Thesaurus Nal: |
Amazonia; Cowpeas. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59299/1/CPATU-ComTec85.pdf
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Marc: |
LEADER 01360nam a2200301 a 4500
001 1375263
005 2016-11-10
008 1998 bl uuuu u0uu1 u #d
100 1 $aCARVALHO, R. de A.
245 $aEstimativa de custo de produção de sementes selecionadas de caupi, no município de Tracuateua, Pará.
260 $aBelém, PA: EMBRAPA-CPATU$c1998
300 $a3 p.
490 $a(EMBRAPA-CPATU. Comunicado técnico, 85).
520 $ao caupi (Vigna unguiculata (L.) walp.) no Estado do Pará tem sido um componente importante nos sistemas de produção. No entanto, sua produção é reduzida, mesmo nas áreas de alto potencial de cultivo, em decorrência do uso de cultivares que, na maioria das vezes, não se adaptam ao sistema explorado e que não atendem às exigências do mercado consumidor. Portanto, a produção de sementes selecionadas é fator importante para que se promova a melhoria do cultivo e a estabilidade da produção da cultura do caupi, no Estado.
650 $aAmazonia
650 $aCowpeas
650 $aCusto
650 $aFeijão de corda
650 $aVigna unguiculata
653 $aBrasil
653 $aCaupi
653 $aCosts
653 $aPará
653 $aProdução de semente
653 $aSeed production
653 $aTracuateua
700 1 $aFERREIRA, C. A. P.
700 1 $aSILVA, J. F. de A. F. da
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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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: |
10/09/2021 |
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Data da última atualização: |
27/09/2021 |
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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: |
SOUZA, P. S. A. de; CERQUEIRA, A. A.; RIGO, M. M.; PAIVA, J. L. de; COUTO, R. S. P.; MERÇON, F.; PEREZ, D. V.; MARQUES, M. R. C. |
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Afiliação: |
PAULO S. A. DE SOUZA, UERJ; ALEXANDRE A. CERQUEIRA, UERJ; MICHELLE M. RIGO, UERJ; JULIETA L. DE PAIVA, UERJ; RAFAEL S. P. COUTO, UERJ; FÁBIO MERÇON, UERJ; DANIEL VIDAL PEREZ, CNPS; MONICA R. C. MARQUES, UERJ. |
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Título: |
Oilfield water treatment by electrocoagulation-reverse osmosis for agricultural use: effects on germination and early growth characteristics of sunflower. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Environmental Technology, v. 38, n. 9, p. 1151-1159, 2017. |
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DOI: |
https://doi.org/10.1080/09593330.2016.1218941 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aims to evaluate the effects of oilfield water (OW), treated by a hybrid process of electrocoagulation and reverse osmosis (EC-RO), on seed germination and early growth characteristics of sunflower (Heliantus annus L.). In the EC step, tests were conducted with 28.6 A m(-2) current density and 4 min. reaction time. In the RO step, the system was operated with 1 L min(-1) constant flow and 2 MPa, 2.5 MPa and 3 MPa feed pressures. In all feed pressures, RO polymeric membranes achieved very high removals of chemical oxygen demand (up to 89%) and oils and greases (100%) from EC-treated effluent. In best feed pressure (2.5 MPa), turbidity, total dissolved salts, electrical conductivity, salinity, toxic ions and sodium adsorption ratio values attained internationally recognized standards for irrigation water. Using EC-RO (feed pressure: 2.5 MPa) treated OW, germinated sunflower seeds percentage (86 +/- 6%), speed of germination (30 +/- 2) and biomass production (49 +/- 5 mg) were statistically similar to control (distilled water) results. Vigor index average values obtained using OW treated by EC-RO (3871) were higher than that obtained by OW water treated by EC (3300). The results of this study indicate that EC-RO seems to be a promising alternative for treatment of OW aiming sunflower crops irrigation, since the use of this treated effluent did not affect adversely seed germination and seedling development, and improved seedling vigor. Furthermore, OW treatment by EC-RO reduces sodium levels into acceptable standards values avoiding soil degradation. MenosThis study aims to evaluate the effects of oilfield water (OW), treated by a hybrid process of electrocoagulation and reverse osmosis (EC-RO), on seed germination and early growth characteristics of sunflower (Heliantus annus L.). In the EC step, tests were conducted with 28.6 A m(-2) current density and 4 min. reaction time. In the RO step, the system was operated with 1 L min(-1) constant flow and 2 MPa, 2.5 MPa and 3 MPa feed pressures. In all feed pressures, RO polymeric membranes achieved very high removals of chemical oxygen demand (up to 89%) and oils and greases (100%) from EC-treated effluent. In best feed pressure (2.5 MPa), turbidity, total dissolved salts, electrical conductivity, salinity, toxic ions and sodium adsorption ratio values attained internationally recognized standards for irrigation water. Using EC-RO (feed pressure: 2.5 MPa) treated OW, germinated sunflower seeds percentage (86 +/- 6%), speed of germination (30 +/- 2) and biomass production (49 +/- 5 mg) were statistically similar to control (distilled water) results. Vigor index average values obtained using OW treated by EC-RO (3871) were higher than that obtained by OW water treated by EC (3300). The results of this study indicate that EC-RO seems to be a promising alternative for treatment of OW aiming sunflower crops irrigation, since the use of this treated effluent did not affect adversely seed germination and seedling development, and improved seedling vigor. Furthermore, OW treatment by EC-... Mostrar Tudo |
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Palavras-Chave: |
Electrocoagulation; Oilfield water. |
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Thesaurus NAL: |
Irrigation; Reverse osmosis; Sunflower seed. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02486naa a2200277 a 4500
001 2134221
005 2021-09-27
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/09593330.2016.1218941$2DOI
100 1 $aSOUZA, P. S. A. de
245 $aOilfield water treatment by electrocoagulation-reverse osmosis for agricultural use$beffects on germination and early growth characteristics of sunflower.$h[electronic resource]
260 $c2017
520 $aThis study aims to evaluate the effects of oilfield water (OW), treated by a hybrid process of electrocoagulation and reverse osmosis (EC-RO), on seed germination and early growth characteristics of sunflower (Heliantus annus L.). In the EC step, tests were conducted with 28.6 A m(-2) current density and 4 min. reaction time. In the RO step, the system was operated with 1 L min(-1) constant flow and 2 MPa, 2.5 MPa and 3 MPa feed pressures. In all feed pressures, RO polymeric membranes achieved very high removals of chemical oxygen demand (up to 89%) and oils and greases (100%) from EC-treated effluent. In best feed pressure (2.5 MPa), turbidity, total dissolved salts, electrical conductivity, salinity, toxic ions and sodium adsorption ratio values attained internationally recognized standards for irrigation water. Using EC-RO (feed pressure: 2.5 MPa) treated OW, germinated sunflower seeds percentage (86 +/- 6%), speed of germination (30 +/- 2) and biomass production (49 +/- 5 mg) were statistically similar to control (distilled water) results. Vigor index average values obtained using OW treated by EC-RO (3871) were higher than that obtained by OW water treated by EC (3300). The results of this study indicate that EC-RO seems to be a promising alternative for treatment of OW aiming sunflower crops irrigation, since the use of this treated effluent did not affect adversely seed germination and seedling development, and improved seedling vigor. Furthermore, OW treatment by EC-RO reduces sodium levels into acceptable standards values avoiding soil degradation.
650 $aIrrigation
650 $aReverse osmosis
650 $aSunflower seed
653 $aElectrocoagulation
653 $aOilfield water
700 1 $aCERQUEIRA, A. A.
700 1 $aRIGO, M. M.
700 1 $aPAIVA, J. L. de
700 1 $aCOUTO, R. S. P.
700 1 $aMERÇON, F.
700 1 $aPEREZ, D. V.
700 1 $aMARQUES, M. R. C.
773 $tEnvironmental Technology$gv. 38, n. 9, p. 1151-1159, 2017.
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