Evaluating the combined effect of application of sulfur with Thiobacillus inoculation on morphological properties of corn variety 704

In order to investigate the effect of sulfur and Thiobacillus inoculate on morphological properties of corn variety 704, a factorial completely randomized experiment was carried out in the research farm of Islamic Azad University of Karaj in 2012. The experiment factors includes Thiobacillus in two levels of used and unused (T0 and T1) and sulfur in three levels of unused, 150 kg per hectare and 300 kg per hectare (S0, S1 and S2). The cultivar experimented upon was the single cross hybrid 704. Variance analysis resulsts indicate that interaction effects in all properties except 100 seeds weight was significant at the probability level of 5%. Use of Thiobacillus results in releasing sulfur and easier accebility of sulfur to the plant and increases the soil acidity. Mean comparison results indicate that use of Thiobacillus increases seed and biologic yields and in Duncen test grouping it was placed at group one. Therefore Thiobacillus by increasing sulfur had significant effects on seed and biologic yields.