Comparison of Biomass Of Eucalyptus Hybrid And ACACIA Auriculiformis (A.Cunn.Ex.Benth.) At Different Age
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Date
1996
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Birsa Agricultural University, Ranchi
Abstract
The biomass study was conducted on two tree species namely Acacia auriculiformis (A. Cunn. ex. Benth.) and Eucalyptus hybrid at different age i.e., 5. 9, 10 and 11-years old stand at Rarha Research Station, Rarha, Ranchi. Growth parameters (diameter and height) and biomass were recorded at each age.
Different regression equation models were tested putting D, D2 and D²H as independent variable in both simple linear equations and linear log-log equations. D or D² as independent variable, was found more suitable in both the species for predicting componental biomass (bole, branch, leaf & twigs and root). The biomass of bole, branch, leaf & twig and root of both species is found in increasing order with respect to increase in age. In Acacia auriculiformis maximum value of componential biomass was found at 11-years age, whereas in Eucalyptus hybrid the maximum value of componential biomass was at 9-years age.
The total biomass obtained at 5, 9, 10 & 11-years age Acacia auriculiformis was much higher than the total biomass obtained at same age in Eucalyptus hybrid. The annual biomass production in Acacia auriculiformis was found higher. (11.01 t/ha/yr) over 11-years period than the annual biomass production in Eucalyptus hybrid (5.81 t/ha/yr).