Buscar
Mostrando ítems 1-10 de 487
Radionuclides, heavy metals and fluorine incidence at Tapira phosphate rocks, Brazil, and their industrial (by) products
(Elsevier B.V., 2006-01-01)
Inorganic phosphate fertilizers may contain radionuclides, heavy metals and fluorine. This paper presents the possible environmental hazards from Tapira phosphate rocks and their (by) products (Brazil) utilized as phosphate ...
Radionuclides, heavy metals and fluorine incidence at Tapira phosphate rocks, Brazil, and their industrial (by) products
(Elsevier B.V., 2006-01-01)
Inorganic phosphate fertilizers may contain radionuclides, heavy metals and fluorine. This paper presents the possible environmental hazards from Tapira phosphate rocks and their (by) products (Brazil) utilized as phosphate ...
Availability of phosphorus in soil and straw in successive tropical grasses crop fertilized with different phosphates
(2016-01-01)
Objective: The aim of this study was to evaluate the availability of P in soil and straw during successive tropical grasses crop fertilized with different phosphates. The crops were grown in 18 dm-3 pots for 50 days. ...
Factors determining rock phosphate solubilization by microorganisms isolated from soil
(1996-12-01)
Forty two soil isolates (31 bacteria and 11 fungi) were studied for their ability to solubilize rock phosphate and calcium phosphate in culture medium. Eight bacteria and 8 fungi possessed solubilizing ability. Pseudomonas ...
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design
(Elsevier, 2009)
In the present paper, a procedure for the determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by slurry sampling (SS) with hydride generation atomic absorption spectrometry (HG-AAS) ...
Rock phosphate fertilization harms azospirillum Brasilense selection by maize
(2019-12-01)
Maize is the most important crop cultivated worldwide. It needs a significant amount of nitrogen and phosphorus fertilization to maintain high yields. However, the high cost of fertilization makes production more expensive ...