[en] In the present investigation influence of variety, nitrogen level and row spacing was studied on the rooting behaviour of wheat crop. The results indicated that the wheat variety Shera showed deep and compact root system while Sonalika and C-306 showed comparatively deep and spreading type and Moti shallow and compact. Application of increasing levels of nitrogen as broadcast to wheat variety Hira caused compaction in the rooting system near the plant. On the contrary, with decreasing levels of nitrogen application an accumulation of roots in deeper layers was observed which may be attributed to vertical extension of roots for exploitation of plant nutrients. A decrease in row spacing of wheat variety Kalyansona having a deep and compact rooting system from 20 cm (normal) to 10 cm resulted in a shift in its rooting behaviour towards more shallow and compactness. ³²P plant injection technique was used in the study. (author)