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dc.creator ALLEONI LUÍS REYNALDO FERRACCIÚ
dc.creator CAMARGO OTÁVIO ANTONIO DE
dc.date 2000
dc.date.accessioned 2013-05-30T00:18:43Z
dc.date.available 2013-05-30T00:18:43Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000200020
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=0100204X&date=2000&volume=35&issue=2&spage=413
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/3055
dc.description Boron adsorption was studied in five representative soils (Rhodic Hapludox, Arenic Paleudalf and three Typic Hapludox) from the State of São Paulo, Brazil. Adsorption was higher in the clayey Oxisols, followed by the Alfisol and the coarser Oxisols. Calcium carbonate promoted an increase in the amount of adsorbed boron in all soils, with the most pronounced effect in the coarser-textured Oxisols. High correlation coefficients were found between adsorbed boron and clay and amorphous aluminum oxide contents and specific surface area (r = 0.79, 0.76 and 0.73, respectively, p < 0.01). Clay content, free aluminum oxide, and hot CaCl2 (0.01 mol L-1)-extracted boron explained 93% of the variation of adsorbed boron. Langmuir and Freundlich isotherms fitted well to the adsorbed data, and highest values for maximum boron adsorption were found in clayey soils, which were significantly correlated with contents of total, free and amorphous iron and aluminum oxides, as well with the physical attributes. Ninety four percent of the variation in the maximum adsorption could be related to the free iron content.
dc.publisher Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
dc.source Pesquisa Agropecuária Brasileira
dc.subject tropical soils
dc.subject simple correlation
dc.subject multiple regression analysis
dc.title Boron adsorption in soils from the State of São Paulo, Brazil


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أعرض تسجيلة المادة بشكل مبسط