Crop growth development depends on environmental and physiological factors. A study was conducted from 1994 to 1997 for the evaluation of the growth pattern of sugar beet using a complete randomized block design with four replications in Kaboutar Abad Station 30 kilometers east of Esfahan. The rate of root dry matter accumulation progressively increased up to 180 days after planting and decreased afterward. The crown dry matter steady increased during the entire growing season. Shoot Relative Growth Rate (RGR) and root RGR were negative after 120 and 170 to 200 days after planting. The highest root crop growth rate were 18, 22 and 20 gr/m2/day and Leaf Area Index were 2.4 , 4.7 and 2.8 for 1994 to 1997 respectively. The highest root yield obtained in 1995 in which the maximum RGR was observed at 130 days and were zero, 200 days after planting. For all three years Na, K and µ-Amino-nitrogen content decreased and white sugar content increased in growth season.
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