Effect of sulfur and Thiobacillus inoculant on Iron, Zinc, Copper and Manganese concentration in canola in greenhouse condition

Nutrient elements absorption in many of Iran soils has problem because of high pH and plenty of calcium Ione in it. Some of these elements are microelements. In order to consider the effect of biological fertilizer on supply of microelements needed for Canola plant, a greenhouse experiment was carried in Azad Islamic University of Karaj in Mahdasht in factorial form and Randomized Complete Block Design (RCBD) with 15 treatments contain 5 levels of elemental sulfur (200, 400, 600, 800, 1000kg/ha) and 3 level of inoculants (without, 5 & 10 gram with 107 bacteria per gram) in 3 replications in 88-89 to determine the effect of sulfur oxidation in the presence of sulfur oxidant bacteria and absorbency of microelements and compare among of absorbed elements in treatments. The results of variance analysis indicated that there was significant difference between treatments in viewpoint of Fe, Zn, Cu and Mn density in level of 1%. The interactive effect of sulfur and Thiobacillus bacteria on significant in 1% for Fe, Zn, Cu density and 5% for Mn. Average density of Fe, Zn, Cu and Mn in treatments without inoculants were 754.5, 23, 22.23 and 122.3 mg/kg. whereas this parameter in inoculated treatments were 918.4, 31.8, 29 and 134.75 mg/kg and were increased 1.5, 2, 2 and 0.57 times.