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Phosphate Sources and Filter Cake Amendment Affecting Sugarcane Yield and Soil Phosphorus Fractions Rev. Bras. Ciênc. Solo
Soltangheisi,Amin; Santos,Valdevan Rosendo dos; Franco,Henrique Coutinho Junqueira; Kolln,Oriel; Vitti,André Cesar; Dias,Carlos Tadeu dos Santos; Herrera,Wilfrand Ferney Bejarano; Rodrigues,Marcos; Soares,Thais de Marchi; Withers,Paul John Anthony; Pavinato,Paulo Sergio.
ABSTRACT: The use of mineral phosphate fertilizers associated with organic residues can improve fertilizer use efficiency and consequently decrease their usage costs. Soil application of filter cake (FC) can provide nutrients and enhance physical quality. This study aimed to evaluate the effects of different phosphate fertilizers [rock phosphate (RP) and triple superphosphate (TSP)] applied at different rates (90 and 180 kg ha-1 P2O5) associated with filter cake (10 Mg ha-1 dry matter) on the soil phosphorus (P) fractions after two consecutive seasons of sugarcane in two distinct soils, sandy and clayey. Yield was significantly improved with FC addition in the first year in both soils, while inorganic P sources did not influence crop yield at either...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reactive phosphate; P solubility; Soil P fractionation; Organic waste.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100519
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Phosphate fertilization and phosphorus forms in an Oxisol under no-till Scientia Agricola
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
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