Abstract
A pot experiment was conducted to investigate the potential effect of arbuscular mycorrhizal fungi (Glomus mosseae & Acaulospora laevis) and phosphate solubi- lizing bacteria (Pseudomonas fluorescens) with different levels of superphosphate on Chrysanthemum indicum L. After 100 days, different plant growth parameters such as mycorrhization's characteristics, phosphatase activity and phosphorus up- take were measured. The obtained results revealed that the inoculation of plants with biofertilizers and recommended dose of superphosphate significantly improved the growth parameters. Inoculation with A. laevis + P. fluorescens at medium con- centration of superphosphate showed maximum height, fresh and dry root weight, AM root colonization, AM spore count, alkaline phosphatase activity, acidic phos- phatase activity and the percent phosphorus uptake in shoot and root whereas root length was maximum in G. mosseae + A. laevis + P. fluorescens. Leaf area and fresh and dry shoot weight were maximum in the treatment (G. mosseae + A. laevis + P. fluorescens) at low concentration of superphosphate. The use of AMF increased nu- trient acquisition from an organic fertilizer source by enhancing acidic phosphatase (ACP) and alkaline phosphatase (ALP) activity, thus facilitating P acquisition and improving plant growth.
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