STATISTICAL ANALYSIS OF GROWTH OF TEAK AS INFLUENCED BY ECOLOGICAL FACTORS IN WESTERN GHATS OF KARNATAKA
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Date
2004
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
"Statistical analysis of growth of teak is influenced by ecological
factors is generally aimed at identifying optimum ecological conditions
required for the better growth of teak. Five forest ranges of Western Ghat
namely Dharwad, Haliyal, Dandeli, Sirsi and Banavasi were evaluated for
various growth parameters to access the influence of ecological factors.
Ecological factors includes rainfall, altitude and various edaphic factors.
The growth of teak in terms of diameter (0.5538 m), height (14.07 m) and
volume (0.2063 m^) was found to have a higher values in Dandeli forest
range and Sirsi forest range have a higher values of basal area (0.2063 m^)
and these two forest ranges were characterized by high rainfall and high
altitude. But, poor growth of teak was noticed under low rainfall and
higher altitude.
Among the various edaphic factors considered bulk density and
particle density have a significantly correlates with all the three growth
parameters except diameter but in case of porosity it was required i.e., it
has significanth' correlated with diameter only. The pH and electrical
conductivity has no substantial effect on growth parameters studied.
Nitrogen and phosphorus in soil exhibited positive association with
various growth parameters and are significantly correlated, but potassium
had a significant result with diameter and basal area and non-significant
results with height and volume. When, we consider the growth of teak over
the years from its initial stage, we observed that the growth was linear
over the years. The maximum increment in height was noticed upto the
age of 18 years and then it reduces in the later years. But, care of
diameter, minimum increment was observed in the early years and
maximum in later years. As the rainfall and altitude increases the growth
also increase and if rainfall and altitude decreases then growth also
decrease."
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No. of references 63