effect of micronutrients application on some related to the quantity and quality morphological traits of sugar beet shirin cultivar seed

in order to study the effects of micronutrients application on some morphological traits associated with seed quantity and quality of sugar beet cultivar shirin, an experiment was conducted in 2001-02 at ardabil agricultural research station. based on soil test results, soil ph was 7.62-7.80 with 0.49- 0.53% organic matter content, and the quantity of absorbable p, total n, and k amounts were found to be at optimum level. eight treatments including: 1. control (no micronutrient), 2. fe, 3. mn, 4. b, 5. feand mn, 6. feand b, 7. mn and b, and 8. mn, fe and b were evaluated in randomized complete block design with three replications. results indicated that the effect of different treatments on the number of lateral branches, main banch diameter, leaf dry weight, branch dry weight, and total dry weight was significant (p < 0.01). means comparision showed that the maximum number of lateral branches was obtained in fe+ treatment and the highest rate of leaf dry weight, branch dry weight, and total dry weight was observed in both fe and fe- b treatments. results also showed that micronutrient application had a significant effect on seed yield, unfilled kernel percentage, vigour percentage, and standard seed size (round 3.5-4.5 mm) percentage. fe- b treatment resulted in the highest seed yield per hectare with the highest  vigour and the lowest unfilled kernel percentage.