Abstract
Eucalyptus camaldulensis, native of Australia, was tried a century ago in areas that now make a part of Pakistan. It has gained much popularity in various plantation programmes during last two decades because of its high growth rate, multifarious uses and adaptability to different ecological and edaphic conditions. In irrigated plamations conventional spacing for Eucalyptus is 1.5 x 1.5 m or 3 x 2 m. In the past the same spacings have been recommended to the farmers without considering the returns from Eucalyptus at these spacings. It has been observed that such closer spacings are suitable for pole, post, fuel wood and maximum biomass production on shorter rotations, whereas the main objective of the farmers remained production of quality wood with high economic returns to supplement their income. Such closer spacings did not serve the purpose of farmers for quality wood production. Therefore we considered it desirable to switch over to wider spacings. For this purpose the Punjab Forestry Research Institute, Faisalabad started experimentation on various spacings suitable for growing Eucalvptus camaldulensis on farmlands with agricultural crops. Chaudhry and Ghauri (1995) reported significant effect of 1.9 x 1.9 m, 3.2 x 1.9 m and 3.8 x 1.9 spacings on diameter growth while it was non-significant in case of height. They also found that spacings had a significant effect on wood production (volume per hectare) with agricultural crops at the age of three years
