Now showing items 21-30 of 465
Effect of hydrazine deproteination on bone mineral phase: A critical view
(Elsevier Science IncNew YorkEUA, 2008)
Phosphorus Fractionation in Soil Cultivated with Sugarcane Fertilized by Filter Cake and Phosphate Sources
Studies of phosphorus (P) forms in high-weathering soils, after long periods of phosphate fertilizer application associated with organic residues, are important to optimize P fertilization. This study aims to evaluate the ...
Phosphates for Pb immobilization in soils: a review
In its soluble ionic forms, lead (Pb) is a toxic element occurring in waters and soils mainly as the result of human activities. The bioavailability of lead ions can be decreased by complexation with various materials in ...
Solubilização de fosfatos de rocha por Aspergillus niger em diferentes tipos de vinhaça
(Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), 1992-02-01)
Aspergillus niger was inoculated into flasks containing mixed of different origins and fluorapatite as a source of phosphorus, or alternatively rock phosphates of different compositions. There was no difference in fungal ...
Agronomic effectiveness of cationic phosphate impurities present in superphosphate fertilizers as affected by soil pH
The general concept that low-water-soluble phosphorus (P) fertilizers should be more agronomically effective when applied to acidic soils was developed based on sources containing mainly calcium (Ca)-P compounds, but it ...
Fosfatos de cálcio de interesse biológico: importância como biomateriais, propriedades e métodos de obtenção de recobrimentos
(Sociedade Brasileira de Química, 2014)
Phosphate fertilization and phosphorus forms in an Oxisol under no-till
(Universidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ), 2014)
Solubilização do fosfato de ferro em meio de cultura.
(Pesquisa Agropecuária Brasileira, Brasilia, DF, v. 43, n.4, p.529-535, abr. 2008., 2011)