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Mostrando ítems 51-60 de 2019
Uso de torta de filtro enriquecida com fosfato natural e biofertilizantes em Latossolo Vermelho distrófico
(2014-01-01)
The use of biofertilizers associated with organic compound and phosphate rock can increase the availability of phosphorus in the soil, due to the increase of the microorganisms population. This study aimed at evaluating ...
Nutrients concentrations in the flag leaf and grains of black-oat affected by phosphate and potassium fertilizationTeores de nutrientes da folha bandeira e grãos de aveia-preta em função da adubação fosfatada e postássica
(2009-01-01)
The black oat (Avena strigosa Schreber) has been commonly used as green manure, in crop rotation systems under no-tillage, fall-winter crop, and for cattle grazing, hay, and silage. The objective of this work was to evaluate ...
Determination of mercury in phosphate fertilizers by cold vapor atomic absorption spectrometry
(2013)
n this paper, a method for the determination of mercury in phosphate fertilizers using slurry sampling and cold vapor atomic absorption spectrometry (CV QT AAS) is proposed. Because mercury (II) ions form strong complexes ...