ALLELOPATHIC EFFECTS OF EUCALYPTUS (Eucalyptus camaldulensis L.) ON GERMINATION AND SEEDLING GROWTH OF WHEAT (Triticum aestivum L.)

The allelopathic influence of aqueous extracts of Eucalyptuscamaldulensis L. on germination (%) and seedling growth(fresh and dry weight) of wheat have been determined. Itwas noted that aqueous extracts at a concentration of 10,15 and 20% had inhibitory effect on wheat seedgermination and effect was found significantly higher thanuntreated control treatment. Fresh and dry weight ofseedling was also reduced significantly over control. Theinhibitory effects were increased as the extractconcentration increased. These findings indicate that wheatsown in fields which had leaf litter of Eucalyptuscamaldulensis L. will be adversely affected regardinggermination, growth and ultimately yield of wheat.