Consulta: subjectFacets:"Superphosphate"
Registros recuperados: 6
Data/hora: 11/06/2024 04:04:02

Adubação mineral do arroz em solos de campo cerrado de Roraima.
Provedor de dados: 14
Autores: COUTO, W. S.; CORDEIRO, A. C. C.; ALVES, A. A. C.
bitstream/item/60128/1/CPATU-PA47.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Mineral nutrients.; Análise Econômica; Arroz; Cloreto de Potássio; Nutriente Mineral; Uréia.; Superfosfato Triplo; Economic analysis; Potassium chloride; Urea.; Superphosphate; Rice.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379483

Adubação mineral de arroz em latossolo de campo cerrado de Roraima.
Provedor de dados: 14
Autores: COUTO, W. S.; CORDEIRO, A. C. C.; ALVES, A. A. C.
bitstream/item/60093/1/CPATU-PA74.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Roraima; Brasil; Mineral nutrients; Zincsulphate.; Análise Econômica; Arroz; Cloreto de Potássio; Cerrado; Nutriente Mineral; Uréia.; Sulfato de Zinco; Superfosfato Triplo; Amazonia; Economic analysis; Potassium chloride; Rice; Superphosphate; Urea.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380935

Dosagens de fósforo para cultivares de milho em terra roxa estruturada de Roraima.
Provedor de dados: 14
Autores: COUTO, W. S.; RIBEIRO, P. H. E.; ALVES, A. A. C.
bitstream/item/60090/1/CPATU-PA68.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Roraima; Brasil; Maize; Phosphate fertilizers.; Fertilizante Fosfatado; Milho; Produtividade; Superfosfato.; Amazonia; Superphosphate; Yields.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380614

The impact of superphosphate and surface-applied lime on the profitability and sustainability of wool production on the tablelands of NSW
Provedor de dados: 31
Autores: Khairo,   Salahadin A.; Norton,   Mark R.; Garden,   P.; Graham,   Phil; Langford,   Colin; Armstrong,   P.; Brassil,   T.
Soil acidification is one of the major forms of soil degradation in higher rainfall areas of the tablelands of NSW. A grazing experiment was conducted near Sutton, NSW, to assess the effect of various rates of superphosphate, lime, sewage ash and stocking rates on wool production and sustainability between 1999 and 2008. The results from the discounted cash flow analysis show that the net present value of the treatment without lime, the lower rate of superphosphate and the lowest stocking rate returned the highest net present value of $266.30/ha. Raising the application of superphosphate from 125kg/ha every two to three years to 250kg/ha every year on un-limed and limed soil reduced the net present value by $278.70/ha and $249.30/ha, respectively. The...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic; Acid soil; Lime; Superphosphate; Sewage ash; Stocking rate; Policy.
Ano: 2009
URL: http://purl.umn.edu/47939

The profitability of wool production after surface application of lime and superphosphate on acid soils
Provedor de dados: 31
Autores: Khairo,   Salahadin A.; Norton,   Mark R.
Soil acidity is one of the major farm management problems on the Southern Tablelands of NSW. Soil acidity occurs naturally and yet some agricultural practices exacerbate the process through nitrification, leaching, removal of produce and accumulation of organic matter in the soil. A grazing experiment was conducted between 1999 and 2008 near Sutton, NSW, to assess the impact of various combinations of lime and superphosphate application, and stocking rates, on the profitability and sustainability of wool production on the Southern Tablelands. The profitability of 15 alternative experimental treatments was assessed using the discounted cash flow analysis method for a Merino wether enterprise. The results revealed that the highest net present value was...
Tipo: Article
Palavras-chave: Lime; Superphosphate; Profitability; Stocking rate; Farm Management.
Ano: 2010
URL: http://purl.umn.edu/120866

Phosphate fertilization and phosphorus forms in an Oxisol under no-till
Provedor de dados: 63
Autores: Olibone,Dácio; Rosolem,Ciro Antonio.
Under no-till phosphorus (P) accumulates in a few centimeters of the topsoil layer. Plant residues left on the soil surface release P and organic acids, which may improve P availability and fertilizer efficiency, including both soluble (such as triple super phosphate) and less soluble sources (such as reactive natural phosphates). In this study, soybean response to P fertilizer and P forms in the top 40 cm of an Oxisol were evaluated after surface application of different phosphates in a 5-year-old no-till system. Treatments consisted of 0 or 80 kg ha-1 of total P2O5 applied on the soil surface, both as natural reactive phosphate (NRP) or triple super phosphate (TSP). In addition, 80 kg ha-1 of P2O5 were applied to subplots, in furrows below and beside the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reactive phosphate; Superphosphate; Phosphorus fractions; Conservation tillage.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000400014