Enraizamento de microestacas de mirtileiro em diferentes substratos.

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Concentração foliar de nutrientes em mudas de mirtilo em função de diferentes substratos.

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Comportamento de variedades de mirtileiro sob cultivo agroecológico.

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Sulphate measurement in organic-rich solutions: Carbonate fusion pretreatment to remove organic interferences

Sulphate measurement using a barium sulphate turbidimetric method in solutions with high concentrations of organic material is shown to be problematic. The organics give background colour, which introduces a positive error to the measured absorption, and inhibit the barium sulphate precipitate, which results in a negative error. A carbonate fusion pretreatment of the sample results in the removal of the organic matter and associated interferences. With this pretreatment, excellent sulphate recoveries were obtained (100%). Rigorous testing of the method shows that reproducible and accurate results are obtainable

Qualidade e conservação de frutos de diferentes acessos de mangueira do Banco Ativo de Germoplasma da Embrapa Semiárido.

O objetivo foi avaliar a qualidade e conservação pós-colheita de frutos dos acessos Tyller Premier, Scuper Many e Malindi, colhidas em estádio de maturação 3 e armazenadas sob refrigeração

Qualidade dos frutos de acessos de Mangifera spp de diferentes origens conservados em Banco Ativo de Germoplasma.

O presente trabalho objetivou caracterizar frutos de oito acessos de Mangifera spp pertencentes ao BAG de Mangueira da Embrapa Semiárido, quanto aos principais atributos físicos, químicos e bioativos

Comportamento produtivo de novas cultivares de morangueiro na região de Pelotas, RS.

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Instability of dilute granular flow on rough slope

We study numerically the stability of granular flow on a rough slope in collisional flow regime in the two-dimension. We examine the density dependence of the flowing behavior in low density region, and demonstrate that the particle collisions stabilize the flow above a certain density in the parameter region where a single particle shows an accelerated behavior. Within this parameter regime, however, the uniform flow is only metastable and is shown to be unstable against clustering when the particle density is not high enough.Comment: 4 pages, 6 figures, submitted to J. Phys. Soc. Jpn.; Fig. 2 replaced; references added; comments added; misprints correcte

Microestaquia de mirtilo (Vaccinium spp.)

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