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August 17, 2004
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December 19, 2004
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Abstract

Eucalyptus globulus L.(Myrtaceae) stared as antisocial tree  for  social  forestry  (Kohli,  1987)  is commonly transplanted through out India on roadsides, bare  lands  and  boundaries  of  crop  fields without considering its allelopathic effects on crop  plants,  especially cereals  and  pulses.  The aerial parts, especially leaves of this  tree contain  volatile tarpenes (Del  Moral  and  Muller, 1970),  water soluble toxins and growth inhibitors. (Grummer and Beyer, 1960 and Al-Mousawi, Al-Naib,1976 and Pandhy et al. 1992). Toxic effects of different concentrations of leaf extract of Eucalyptus globulus (Viz-5,10, 15,  20  &  25  percent)  was  studied  on  percentage  of  seed  germination,their  survival, growth of radical and plumule and establishment of secondary roots on three species of Vicia-V. narborensis, Vicia benghalensis. and V. faba.In the present investigation each concentration showed inhibitory  effects  of  the  above  parameters  which  gradually  increases  with  increasing   concentra- tions of the leaf extract. Delayed germination was also noticed in the treated seeds. Vicia narborensis proved to be more sensitive to these toxic leachates than the other  two species.  The above findings clearly showed  that  the  transplantation  of  Eucalyptus  species  on boundaries of  crop  plants  should be totally banned. Further investigation on its Cytotoxic effect (if any) is in progress.

Keywords

phytotoxic leaf extract seedling

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How to Cite
Singh, R. B., & Das, U. C. (2004). Phytotoxic Effects of Eucalyptus globulus leaf extract on seed germination and seedling growth of Vicia. Environment Conservation Journal, 5(1-3), 45–50. https://doi.org/10.36953/ECJ.2004.0512307
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