The studies were conducted on the allelopathic effects of different tree crops on the rabi sorghum. The performance of tree crops and field crops was evaluated in field conditions, whereas the studies on allelopathic effect of tree crops on rabi sorghum was taken up as pot culture experiment. Among the  tree species the Hardwickia binata had significantly less allelopathic effect on rabi sorghum compared to other tree species. The germination per cent (85%),root length ( 12.06cm), shoot length (9.69 cm) and seedling dry weight at 10 days (0.37g) were least affected by H. binata as compared other tree species. The maximum harmful effect was noticed with Acacia nilotica which  was  found to have higher total biomass production (3863kg/ha) and  crown diameter (8.36m). It appears that H.binata has better compatability with arable  crops like rabi sorghum when grown in an agri-silviculture system.