Abstract: Establishment of sorghum and sunflower was once evaluated, using a multiple regression technique of Wade's.Since the technique had not been independently validated, (ic!d experiments were conductcdlo verily and to further improve this regression.Results showed that there was good agreement between predicted and observed grain yield, which indicated the effectiveness of the method.Late emerging plants contributed less gram yield than early ones, even whcn they had enough space.Gaps greater than 2 meters reduced yield significantly.

Key words: Sunflower, Poor stands, Regression model