Research Article | Published: 01 March 2010

Statistical models for prediction of growth and yield of Dalbergia Sissoo and Hardwickia Binnata under Silvipastoral system in India

Ajit, P. Rai, U. P. Singh and Nighat Jabeen

Indian Journal of Forestry | Volume: 33 | Issue: 1 | Page No. 13-20 | 2010
DOI: https://doi.org/10.54207/bsmps1000-2010-Q85R2E | Cite this article

Abstract

A field experiment was initiated at National Research Centre for Agroforestry (NRCAF), Jhansi, India to study the effect of pruning treatment on the growth and yield of Dalbergia sissoo and Hardwickia binnata under silvipastoral system. The experiment consisted of two treatments viz naturally grown trees and pruned trees (50%) planted at a spacing of 6 x 4m. At the age of ten years, eight trees were harvested from both the tree species and under each of two treatments for above ground biomass components and volume estimates. The mean above ground dry biomass (AGB) production under pruned and unpruned conditions was 68.43, 128.36 kg/tree for D. sissoo and 28.17, 61.24kg/tree for H. binnata respectively. Allometric functions were used to develop model for estimation of AGB on the basis of dbh (diameter at breast height) and the fitted equations were AGB=0.666*(dbh)1.831 for Dalbergia -unpruned; AGB=0.611*(dbh)1.752 for Dalbergia -pruned and AGB=5.973*(dbh)0.917 for Hardwickia -unpruned; AGB=2.246*(dbh)1.086 for Hardwickia –pruned respectively. The above ground biomass productivity (tons/ha/yr) ranged from 2.73 to 5.13 for D. sissoo in case of pruned and unpruned respectively, whereas the wood volume index (m3/ha/yr) ranged from 2.8 to 4.4 respectively. In case of H. binnata, the biomass productivity was observed from 1.10 to 2.44 and wood volume index from 1.12 to 2.24 respectively under pruned and unpruned conditions.

Keywords

Pruning treatment, Silvipastoral system, Biomass productivity, Wood volume index, Above ground dry biomass (AGB), Prediction models

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How to cite

Ajit, Rai, P., Singh, U.P. and Jabeen, N., 2010. Statistical models for prediction of growth and yield of Dalbergia Sissoo and Hardwickia Binnata under Silvipastoral system in India. Indian Journal of Forestry, 33(1), pp.13-20. https://doi.org/10.54207/bsmps1000-2010-Q85R2E

Publication History

Manuscript Published on 01 March 2010

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