Improving rooting characteristics in air-layers of Ficus elastica var. decora using indole-3-butyric acid (IBA) in the presence of Bacillus subtilis and arbuscular mycorrhizal fungi

The current experiment was conducted to study the response of Ficus elastica var. decora air-layers to seven treatments of IBA (control, 50 and 100 ppm in rooting substrate, 1500 and 3000 ppm by painting girdled zone, and 1500 and 3000 ppm in talc paste) in the presence of root promoting microorganisms including Bacillus subtilis and arbuscular mycorrhizal fungi (AMF).