Growth and production of parica wood in two plantations in the north of Mato Grosso, Brazil

The objective of the present study was to describe the increase in diameter, height and volume of trees of Schizolobium amazonicum Huber ex Ducke and adjust a mathematical model to describe growth in terms of total volume in two plantations in the north of Mato Grosso, Brazil. Data were obtained through full analysis of the stem of 12 trees collected in two plantations. Four functions of volume growth according to age were tested. Growth in diameter, height and volume were compared through analysis of variance and Tukey test. The average growth for the two plantations, which had 16 years of age, in terms of DBH and total height were 30.1 and 32.2 cm; 29.2 and 23.9 m and volumetric production was 1.04 and 0.96 m(3), respectively, for the plantations one (1) and two (2). There was a statistical difference (p <0.001) between the plantations only for the variable total height from the eighth year. The Richard's (R(2)aj 0.82) and Logistic (R(2)aj 0.65) models had the best fit for the plantations one and two, respectively. Results pointed to the conclusion that S. amazonicum has rapid growth in the study area but this is still lower than the growth of the species in other Amazon states such as Para, Acre and Rondonia.