EFFECT OF SAMPLING HEIGHT AND SPACING ON WOOD EXTRACTIVES IN EUCALYPTUS TERETICORNIS SMITH

Shabir Ahmad Rather, Kulwant Rai Sharma, Sabeena Nabi, Heena Gupta

Abstract


The investigation was carried out to evaluate the effect of sampling height and spacing on wood extractives in high density plantation of 25 year old Eucalyptus tereticornis. Four trees each from three spacings viz. 0.60 × 0.60 m (S1), 0.90 × 0.90 m (S2) and 1.20 × 1.20 m (S3) were randomly selected and harvested. The wood extractives were studied by taking sample discs at four different tree heights viz. ground level (H1), 30% (H2), 60% (H3) and 90 % (H4) of total tree height. The significantly highest extractives (cold water, hot water and alcohol-benzene soluble extractives) were recorded at ground level and lowest at 90 per cent of total tree height. Effect of spacing and its combined effect with sampling height on the extractives was found to be non-significant except alcohol-benzene soluble extractives.


Keywords


wood extractives, spacing, sampling height, Eucalyptus, high density

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