A sixteen year old rubber(Hevea brasiliensis) plantation was subjected to a study on root distribution pattern using the logarithamic spiral trench method. Considerable variation in root intensity was observed for different soil depths and lateral distances sampled. Total root intensity was maximum in the upper-0-10 cm soil layer for all the lateral distances. The soil zone lying within 3 m lateral distance from the base of the tree and at 30 cm soil depth accounted for almost 70 per cent of the total roots for the rubber trees studied. This forms the zone of root activity for most of the field intercrops. However, crops with limited root spread can be intercropped with rubber under quincunx planting. Also, there is a scope for integrating deep-rooted multi-purpose trees with rubber.