Laboratory experiments were  conducted during 2000 to study allelopathic influence of leaf of certain multipurpose  tree species viz., Acacia auriculiformis, Casuarina equisetifolia, Bambusa auradinanceae  and Tectona grandis on test crops (Tomato, Brinjal and Chilli). The  results revealed that leaf leachates of  all trees significantly inhibited germination percentage and growth  of vegetable crops. Response indices revealed that  inhibition of  radical  and plumule growth was more pronounced.