Interactive Effect of Rhizosphere Micro-Organisms on Nutrient Uptake and Essential Oil Yield of Thymus daenensis

In order to study the effects of interaction between the arbuscular mycorrhizal fungi and biological control agents (BCA) on the some nutrient content، Essential Oil Yiled and root colonization of Thymus daenensis plants، A split plot experimental design was applied in a randomized complete blocks with six treatments and three replications at semnan natural resource research field at shahmirzad، in 2011-2012. Treatments included: A: the fungus of Glomus mosseae (1-inoculated(AM) and 2- no inoculated) and B: BCA inoculums (1-: Bacillus subtilis 2- Pseudomonas fluorescens 3-control). Results showed that inoculation with G. mosseae or B. subtilis significantly increased the foliar uptake of Mg، Mn and Zn as compared to non- inoculated plants. The most effective treatment was observed in the co- inoculation with G. mosseae and B. subtilis، which synergistically increased Essential Oil Yiled and nutrient uptake campared with singly inoculated or non- inoculated plants.