Sushma Mahajan , S. V. Singh , R. V. Rao , S. P. Singh , Pallavi Gupta

Abstract

Three clones of Eucalyptus hybrid were subjected to kraft pulping experiments at 16% total active alkali charge. Four trees of each clone were studied. Pulp yield, screened rejects, kappa number and physical strength properties in terms of tensile index, burst index and tear index were determined after beating the unbleached pulps in PFI mill at constant revolution of 8000. All the trees from these clones possessed adequate pulp yield and strength properties in the following order: Clone B(48.00%) > Clone C(43.71%) > Clone A(42.92%).

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V. Kothiyal , R. Sudheendra , R. V. Rao

Abstract

Specific gravity and some of the mechanical prperties of five clones of Eucalyptus tereticornis Sm. developed by ITC Bhadrachalam are reported in this paper. The five clones represented by four trees each of four and half years of age studied are from Sarapakka (Andhra Pradesh) grown on red soil. The results were compared with values reported for the same clones of even age group from Cherupally (Andhra Pradesh) demonstration plot grown on black soil. Clone number 4 had overall better mechanical properties having highest value for all the properties; followed by clone 6.

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R. V. Rao , V. Kothiyal , P. Sreevani , S. Shashikala , S. Naithani , S. V. Singh

Abstract

Five trees of four and half years old growth representing 5 clones of Eucalyptus tereticornis Sm. Obtained from ITC Bhadrachalam Paper Boards, Andhra Pradesh, India were evaluated for pulp yield and strength properties. Variation in pulp yield, kappa number, holocellulose and lignin content, strength and anatomical properties was observed in five clones. Clone 3 yielded more pulp. The pulps of all the clones tested have adequate strength properties. Basic information on anatomical properties were also provided in the paper.

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Laxmi Chauhan , R. D. Raturi , R. V. Rao , R. Dayal

Abstract

Wood Anatomy of 8 genera of Indian Flacourtiaceae has been described in detail. The study indicates that type of ray-vessel pitting and perforation plate are of diagnostic value in separating the genera Hydnocarpus and Gynocardia. The remaining genera have more or less similar anatomical features. However the important anatomical features have been tabulated for facilitating specific identification.

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