Efeito de fontes de fósforo na variação de pH e disponibilidade de fósforo, cálcio e magnésio, em um solo de Viçosa
Palavras-chave:
troca iônica, efeito residual, superfosfato simples, ácido fosfórico, fosfato diamônicoResumo
This work was concerning with the influence of various sources of phosphorus on the variation of pH and the availability of phosphorus, calcium and magnesium. The Mehlich's extrator was used to extract the phosphorus, calcium and magnesium.
The sources of phosphorus used were phosphoric acid, ordinary superphosphate, fusion phosphate, bone meal, di-ammonium phosphate and Araxa rock phosphate.
It was concluded that the pHwas increased buthe fusion phosphate only, and was decreased by the application of the ordinary superphosphate and di-ammonium phosphate.
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