Data/hora: 06/06/2024 04:22:41

Biblioteca(s): | Embrapa Gado de Leite; Embrapa Instrumentação.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 30/06/2016
Data da última atualização: | 24/07/2018
Autoria: | REGITANO, J. B.; ROCHA, W. S. D.; BONFLEUR, E. J.; MILORI, D.; ALLEONI, L. R.
Afiliação: | DEBORA MARCONDES BASTOS P MILORI, CNPDIA.
Título: | Effect of soil water content on the distribuition of diuron into organomineral aggregates of highly weathered tropical soils.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Agricultural and Food Chemistry. [S. l.], v. 64, n. 20, p. 3935-3941, 2016.
DOI: | 10.1021/acs.jafc.5b04664
Idioma: | Inglês
Notas: | Entrada padronizada: MILORI, D. M. B. P.
Conteúdo: | We evaluated the effects of soil water content on the retention of diuron and its residual distribution into organomineral aggregates in four Brazilian oxisols. 14C-Diuron was incubated for days at 25, 50, and 75% of maximum water-holding capacity for each soil. After 42 days, the physical fractionation method was used to obtain >150, 53–150, 20–53, 2–20, and <2 μm aggregate sizes. Diuron retention increased with increasing soil water content for all soils. At lower soil water content, diuron’s retention was higher in the sandier soil. It was mostly retained in the fine (<20 μm) aggregates of sandier soil, and for clayed soils, retention was higher in the coarse aggregates (>53 μm). The sorption coefficients (Kd and Koc) generated by batch studies should be carefully used because they do not provide information about aggregation and diffusion effects on pesticides soil sorption.
Palavras-Chave: | Pesticide sorption; Physical fractionation; Tropical; Water diffusion.
Thesagro: | Água; Solo.
Thesaurus Nal: | Oxisols; soil organic matter; Soil water content.

Categoria do assunto:

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P Recursos Naturais, Ciências Ambientais e da Terra

Registro original: | Embrapa Instrumentação (CNPDIA)

Exemplares:

CNPDIA - (15924-1) - UPC - AP - PP - PROCI-16.00022 -  - 2016.00022 - DIS
CNPGL - (23042-1) - UPC - AP - DD -  -  -  - DIS