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Effects of three levels of P, B, Zn, And two levels of lime on an orthox soil (cerrado) upon the gorwth rate of Eucalyptus grandis (Hill, Ex-Maiden)

Three levels of P (0.0, 16.0 and 32.0 ppm), B (0.0, 2.0 and 4.0 ppm), Zn (0.0, 3.0 and 6.0 ppm) and two levels of lime (0.0 and 6.0 gr. CaCO3 + 2.5 gr. MgCO3) were applied to 8.0 kg of an orthox soil, originated from "Cerrado" area from Itirapina (SP, Brazil). A factorial experiment consisting of 3³ x 2 with two replications was conducted in a greenhouse at Piracicaba (SP), Brazil). Phosphorus and liming had a significant effect on growth and matter production by Eucalyptus. The boron levels (2.0 ppm and 4.0 ppm) interacted with lime, P and Zn application. The addition of 3.0 ppm and 6.0 ppm of zinc to the soil interacted negatively with B and P on the growth of the plants.


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