Abstract

The suitability of two mathematical functions (weibull and the beta distributions) for representing the frequency distribution of diameter in even-aged teak was tested using the data on diameter at breast-height collected from six plots in four year old plantations at Nilambur, Kerala. The plots had an expected number of 100 trees at 2m x 2m spacing but actual stocking varied from 58-79 percent. The observed diameter distribution was nearly symmetrical and platykurtic and was better fitted by the more flexible beta distribution than by the weibull distribution