| Acacia mearnsii is the third forest species more planted in Brazil, especially in small farms at Rio Grande do Sul State. The species is also known as black wattle and is important as a source of tannin, timber, pulpwood and rayon. Its fast growth results in high demand of nutrients and fertilization is necessary to keep site productivity. In this paper it is reported the results of the application of four doses of Phosphorous (0, 20, 40, 80g/tree as P2O5) and three of Potassium (0, 20, 40g/tree as K2O), in a factorial designed trial established on a chemically poor soil at the region of Ponta Grossa, State of Paraná, Brazil. Trees were implanted in a 3m X 2m spacing with 35 plants per plot. The fertilizers were applied in furrows between the rows at the... |
