Efeito da aplicação de calcário sobre os níveis de pH, cálcio, magnésio, fósforo e potássio do solo.
Palavras-chave:
solo aluvial, calagem prática, matéria orgânica, teor fósforo, potássio cálcioResumo
A study was initiated to examine the relationship between the levels of lime applied and the variation in the pH of the soil and levels of calcium, magnesium, potassium, organic matter and phosphorus. Two experiments were laid out in the same soil (Aluvial textura argilosa), in two locations of the Zona da Mata, Minas Gerais. The experimental design was an incomplete factorialand one of the variables studied was lime which was applied at the levels of 0, 1 500, 3.000, 4.500 and 6.000 kg/ha.
The levels of lime used affected the levels of the other variables studied, however, the values measured were equally modified at the 10 and 20 cm depths. As a consequence the differences between the values remained constant when samples were taken at the 10 and 20 cm depths.
Magnesium leached more than the other elements studied, reaching higher values at 20 cm thanl0 cm of depth. Potassium and organic matter had smaller values in the second sampling in one location and larger in the other location. The levels of phosphorus increased in the presence of lime in both locations and at both depths of sampling, but the difference between the two depths of sampling stayed constant
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