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Biblioteca(s):  Embrapa Meio Ambiente.
Data corrente:  20/12/2013
Data da última atualização:  02/02/2021
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  SOUZA, C. P. C.; ABREU, C. A.; ANDRADE, C. A. de; ABREU, M. F.
Afiliação:  CAMILA P. C. SOUZA, FAPESP; CLEIDE A. ABREU, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA; MONICA F. ABREU, IAC.
Título:  Extractants to assess zinc phytoavailability in mineral fertilizer and industrial by-products.
Ano de publicação:  2013
Fonte/Imprenta:  Revista Brasileira de Ciência do Solo, Viçosa, v. 37, n. 4, p. 1004-1017, 2013.
Idioma:  Inglês
Conteúdo:  Summary: Efficient analytical methods for the quantification of plant-available Zn contained in mineral fertilizers and industrial by-products are fundamental for the control and marketing of these inputs. In this sense, there are some doubts on the part of the scientific community as well as of the fertilizer production sector, whether the extractor requested by the government (Normative Instruction No. 28, called 2nd extractor), which is citric acid 2 % (2 % CA) (Brasil, 2007b), is effective in predicting the plant availability of Zn via mineral fertilizers and about theagronomic significance of the required minimal solubility of 60 % compared to the total content (HCl) (Brasil, 2007a). The purpose of this study was to evaluate the alternative extractors DTPA, EDTA, neutral ammonium citrate (NAC), buffersolution pH 6.0, 10 % HCl, 10 % sulfuric acid, 1 % acetic acid, water, and hot water to quantify the contents of Zn available for maize and compare them with indices of agronomic efficiency of fertilizers and industrial by-products when applied to dystrophic Clayey Red Latosol and Dystrophic Alic Red Yellow Latosol with medium texture. The rate of Zn applied to the soil was 5 mg kg-1, using the sources zinc sulfate, commercial granular zinc, ash and galvanic sludge, ash and two brass slags. Most Zn was extracted from the sources by DTPA, 10 % HCl, NAC, 1% acetic acid, and 10 % sulfuric acid. Recovery by the extractors 2 % CA, EDTA, water, and hot water was low. The agronomi... Mostrar Tudo
Palavras-Chave:  Industrial waste; Maize; Micronutrients.
Thesagro:  Zea Mays.
Thesaurus Nal:  solubility.
Categoria do assunto:  --
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/94428/1/2013AP37.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Meio Ambiente (CNPMA)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPMA12864 - 1UPCAP - DD
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