Application of Glycine, Tufool and Salicylic Acid in Sugar beet (Beta vulgaris L.) under Drought Conditions

Sugar beet is one of strategic products to supply sugar in water limited areas of Iran. Thus, proper managements to supply enouph water in production of sugar beet is very important. To evaluate the effects of some anti stress substances like salicylic acid, tyuful and glycine to irritigate the effect of early water deficit on suger beet, an experiment based on randomized complete block design with three replications was carried out at the Research Farm of Fariman Sugar Factory in 2013. Treatments consisted of control (without using anti stress substances), with three concentration of salicylic acid (0.1, 0.5, and 1 mM), tyuful with three concentration (0.5, 1 and 1.5 liter per thousand) and glycine with three concentration (1, 2 and 3 liters per thousand). The results showed that the effects of anti-stress materials significantly affected the sugar content, root yield, white sugar yield and harmful nitrogen. Highest sugar content (15.65%), root yield (83.82 t.ha-1) and white sugar percentage (11.15%) were obtained by using tyuful 1.5 lit/1000. While, the lowest levels of these characters were obtained from control (not using anti stress substances). Maximum harmful nitrogen was produced in control treatment (4.38) and highest level of alkalinity with mean of 3.49 was observed by using 3 lit/1000 of glycine. Our results showed that all of the anti stress substances had positive effects on sugar beet under drought stress condition.