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Potassium availability in a hapludalf soil under long term fertilization Rev. Bras. Ciênc. Solo
Kaminski,João; Moterle,Diovane Freire; Rheinheimer,Danilo dos Santos; Gatiboni,Luciano Colpo; Brunetto,Gustavo.
In a system in which fertilization is recommended, diagnosis of soil K availability and the establishment of critical levels are made difficult by the possibility of a contribution of non-exchangeable forms of K for plant nutrition. Due to its magnitude, this contribution is well diagnosed in long term experiments and in those which compare fertilization systems with positive and negative balances in terms of replacement of the K extracted by plants. The objective of this study was to evaluate K availability in a Hapludalf under fertilization for sixteen years with the addition of K doses. The study was undertaken in an experiment set up in 1991 and carried out until 2007 in the experimental area of the Soil Department of the Federal University of Santa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Potassium fertilization; Potassium critical level; Potassium export by plants.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300020
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