Dynamics of initial spacing on the diameter of hybrid Eucalyptus grandis x Eucalyptus urophylla in a systematic design

We evaluated the effect of initial spacing on distribution Eucalyptus grandis x urophylla tree diameters in a Nelder wheel design. The study area was west-central Brazil. A design with three repetitions used. This provides 432 planting spots per plot/repetition. Planting density varied from 0.50 m² to 41.25 m². diameter at breast height measured for all plants every four months until 36 age, totaling eight measurements. description developed by fitting probability functions each and age. quality fit using root mean square error percentage, Pearson’s correlation coefficient, Kolmogorov-Smirnov test (α < 0.05). spacings up 1.17 must be harvested less than two years, since it is noted that third year increment static mortality rate increases. highly affects structure population, impelling forester consider different uses wood. For wood requiring larger diameters, above 8.69 recommended