Sôbre uma modificação no método de Neubauer

Catani, R. A.; Filho, H. Bergamin

doi:10.1590/s0071-12761961000100019

Cited by 4 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the bioassays, an adaptation of Neubauer’s method was used . On each experimental unit, a mixture of 100 g of soil and 200 g of beach sand were mixed and homogenized.…”

Section: Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Layered Double Hydroxides: New Technology in Phosphate Fertilizers Based on Nanostructured Materials

Benício

Constantino

Pinto

et al. 2016

ACS Sustainable Chem. Eng.

119

View full text Add to dashboard Cite

Layered Double Hydroxide (LDH) intercalated with phosphate ions (LDH-phosphate) was synthesized by ionexchange method from a precursor containing nitrate ions between the layers. The materials were characterized by X-ray diffraction (XRD), attenuated total reflectance−Fourier transform infrared spectroscopy (ATR-FTIR), thermogravimetric analysis coupled to differential scanning calorimetry and mass spectrometry (TGA-DSC-MS), specific surface area (BET), scanning electron microscopy (SEM), and elemental analysis. We hypothesized that LDH-phosphate can be used as a slow release fertilizer and help increase phosphate fertilization efficiency in tropical weathered soils. This new fertilizer technology was tested in a kinetic study of P release and a bioassay with controlled conditions of light, humidity, and temperature using maize (Zea mays) as our indicator plant. The bioassay was performed using an adaptation of the Neubauer method, wherein the LDHphosphate was compared to the commercial triple superphosphate (TSP) fertilizer in two different weathered soils: a sandy soil and a clayey soil. Under the bioassay experimental conditions, LDH-phosphate increased plant productivity (mass of dry matter), height, and the content of phosphorus (P) in the dry matter. In addition, LDH-phosphate promoted an increase in the soil pH value, contributing to decrease the P adsorption capacity of the soil, making it more available to the plants.

show abstract

“…For the bioassays, an adaptation of Neubauer’s method was used . On each experimental unit, a mixture of 100 g of soil and 200 g of beach sand were mixed and homogenized.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…For the bioassays, an adaptation of Neubauer's method was used. 41 On each experimental unit, a mixture of 100 g of soil and 200 g of beach sand were mixed and homogenized. The beach sand was previously washed with a solution of 2.0% HCl to extract any possible contaminant that could interfere in the experiment results.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Layered Double Hydroxides: New Technology in Phosphate Fertilizers Based on Nanostructured Materials

Benício

Constantino

Pinto

et al. 2016

ACS Sustainable Chem. Eng.

119

View full text Add to dashboard Cite

show abstract

“…Posteriormente, esses autores realizaram uma avaliação do aproveitamento dos micronutrientes por plantas de arroz, utilizando o método de Neubauer & Schneider (Catani & Bergamin Filho, 1961). As correlações entre os teores de cada micronutriente extraído pelos diferentes extratores e os teores encontrados nas plantas indicaram o melhor extrator para cada micronutriente.…”

Section: Introductionunclassified

Solubilidade de micronutrientes contidos em formulações de fertilizantes, em extratores químicos

Alcarde

Vale

2003

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

RESUMOA legislação brasileira adota o teor total para a garantia dos micronutrientes em fertilizantes. Isso permite a utilização de subprodutos de várias origens, baratos, mas que nem sempre apresentam os micronutrientes em formas disponíveis às plantas. Estudou-se a solubilidade dos micronutrientes em formulações de fertilizantes, utilizando os extratores água e soluções de ácido cítrico 20 g L -1 e citrato neutro de amônio (1 + 9), já usados na avaliação de matérias-primas. Os resultados foram semelhantes, tanto na avaliação das formulações como de matérias-primas, isto é, a solução de ácido cítrico a 20 g L -1 possibilita avaliar, com mais segurança, o conteúdo de micronutrientes em formulações de fertilizantes, representando uma alternativa para o teor total, que não é um critério adequado, do ponto de vista agronômico, para avaliar os micronutrientes contidos em fertilizantes. Termos de indexação: micronutrientes, misturas de fertilizantes, soluçõesextratoras. SUMMARY: MICRONUTRIENT SOLUBILITY IN FERTILIZER MIXTURES BY CHEMICAL EXTRACTORSIn Brazilian legislation, the control for micronutrient concentrations in mineral fertilizers considers the total content. As a consequence, low-cost by-products and even industrial residues are generally used as a source for micronutrients, despite their low availability to plants. To evaluate fertilizer solubilities, water, , and neutral ammonium citrate (1 + 9) extracting solutions were applied to mixtures containing

show abstract

Comportamento do cobre aplicado no solo por calda bordalesa

Felix¹,

Rodella²

View full text Add to dashboard Cite

show abstract

Sôbre uma modificação no método de Neubauer

Abstract: (1)Recebido para publicação em 30/10/1961.

Cited by 4 publications

References 1 publication

Layered Double Hydroxides: New Technology in Phosphate Fertilizers Based on Nanostructured Materials

Layered Double Hydroxides: New Technology in Phosphate Fertilizers Based on Nanostructured Materials

Solubilidade de micronutrientes contidos em formulações de fertilizantes, em extratores químicos

Comportamento do cobre aplicado no solo por calda bordalesa

Contact Info

Product

Resources

About