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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças; Embrapa Semiárido. |
Data corrente: |
08/08/1996 |
Data da última atualização: |
08/08/1996 |
Autoria: |
CALBO, A. G.; GUALBERTO, J. A. G.; CARVALHO, F. A. L. de. |
Afiliação: |
EMBRAPA-CNPH. |
Título: |
Estudo do armazenamento de duas cultivares de cebola na unidade armazenadora de Belem do Sao Francisco. |
Ano de publicação: |
1979 |
Fonte/Imprenta: |
Brasilia : UEPAE de Brasilia, 1979. |
Páginas: |
19p. |
Idioma: |
Português |
Notas: |
Trabalho conjunto - EMBRAPA / CIBRAZEM / COBAL. |
Conteúdo: |
Material vegetal. Acondicionamento e delineamento experimental. Determinacoes e amostragens. Dados ambientais. |
Palavras-Chave: |
Armazenagem; Belem do Sao Francisco; Brasil; Cultivo; Onion; Package; Packing; Pernambuco. |
Thesagro: |
Acondicionamento; Allium Cepa; Cebola; Embalagem. |
Thesaurus Nal: |
Brazil; storage. |
Categoria do assunto: |
-- A Sistemas de Cultivo |
Marc: |
LEADER 00976nam a2200325 a 4500 001 1755096 005 1996-08-08 008 1979 bl uuuu u0uu1 u #d 100 1 $aCALBO, A. G. 245 $aEstudo do armazenamento de duas cultivares de cebola na unidade armazenadora de Belem do Sao Francisco. 260 $aBrasilia : UEPAE de Brasilia$c1979 300 $a19p. 500 $aTrabalho conjunto - EMBRAPA / CIBRAZEM / COBAL. 520 $aMaterial vegetal. Acondicionamento e delineamento experimental. Determinacoes e amostragens. Dados ambientais. 650 $aBrazil 650 $astorage 650 $aAcondicionamento 650 $aAllium Cepa 650 $aCebola 650 $aEmbalagem 653 $aArmazenagem 653 $aBelem do Sao Francisco 653 $aBrasil 653 $aCultivo 653 $aOnion 653 $aPackage 653 $aPacking 653 $aPernambuco 700 1 $aGUALBERTO, J. A. G. 700 1 $aCARVALHO, F. A. L. de
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Embrapa Hortaliças (CNPH) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
09/10/2018 |
Data da última atualização: |
07/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
ASENSIO, V.; ABREU-JUNIOR, C. H.; SILVA, F. C. da; CHITOLINA, J. C. |
Afiliação: |
VERONICA ASENSIO, Cena/USP; CÁSSIO HAMILTON ABREU-JUNIOR, Cena/USP; FABIO CESAR DA SILVA, CNPTIA; JOSÉ CARLOS CHITOLINA, Fundação Municipal de Ensino de Piracicaba. |
Título: |
Evaluation of chemical extractants to assess metals phytoavailability in Brazilian municipal solid waste composts. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Environmental Pollution, v. 243, Part B, p. 1235-1241, Dec. 2018. |
DOI: |
https://doi.org/10.1016/j.envpol.2018.09.100 |
Idioma: |
Inglês |
Conteúdo: |
Municipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively extracted with the strongest chelating agents used, HCl and Mehlich 3, probably because most metal is bound to organic matter in the compost. Cadmium, chromium, lead and zinc were no efficiently extracted with any of the tested extractants. MenosMunicipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively... Mostrar Tudo |
Palavras-Chave: |
Chemical extractants; Metal phytoavailability; Municipal solid waste compost. |
Thesagro: |
Alface; Cobre; Resíduo Solido. |
Thesaurus NAL: |
Copper; Lettuce; Municipal solid waste. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02616naa a2200277 a 4500 001 2097088 005 2020-01-07 008 2018 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.envpol.2018.09.100$2DOI 100 1 $aASENSIO, V. 245 $aEvaluation of chemical extractants to assess metals phytoavailability in Brazilian municipal solid waste composts.$h[electronic resource] 260 $c2018 520 $aMunicipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively extracted with the strongest chelating agents used, HCl and Mehlich 3, probably because most metal is bound to organic matter in the compost. Cadmium, chromium, lead and zinc were no efficiently extracted with any of the tested extractants. 650 $aCopper 650 $aLettuce 650 $aMunicipal solid waste 650 $aAlface 650 $aCobre 650 $aResíduo Solido 653 $aChemical extractants 653 $aMetal phytoavailability 653 $aMunicipal solid waste compost 700 1 $aABREU-JUNIOR, C. H. 700 1 $aSILVA, F. C. da 700 1 $aCHITOLINA, J. C. 773 $tEnvironmental Pollution$gv. 243, Part B, p. 1235-1241, Dec. 2018.
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