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Hillslope curvature, clay mineralogy, and phosphorus adsorption in an Alfisol cultivated with sugarcane Scientia Agricola
Barbieri,Diogo Mazza; Marques Júnior,José; Alleoni,Luis Reynaldo Ferracciú; Garbuio,Fernando José; Camargo,Livia Arantes.
Hillslope curvatures are associated with specific environments that correlate to chemical and mineralogical attributes of soil, so determining specific management zones. Phosphorus is one of the main limiting factors to the development and longevity of sugarcane. The type and the mineralogical constitution of the clay fraction play an important role in the phosphorus (P) adsorption of soil. High proportion of gibbsite (Gb) in soil may be the major responsible for P adsorption. The relationships among spatial variability as a function of hillslope curvature, the proportion of kaolinite (Kt) and Gb, and phosphorus adsorption were evaluated in an Alfisol cultivated with sugarcane. Two plots of 1 ha of a concave and a convex hillslope area were selected and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Gibbsite; Kaolinite available phosphorus; Geostatistics; Soil-landscape relationships.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600015
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