Synergistic interaction between arbuscular mycorrhizal fungi, rhizobium and phosphate solubilizing bacteria on Vigna unguiculata l verdc.

Author(s): Romana M. Mirdhe*, H. C. Lakshman

Abstract

Green house pot experiments were conducted to evaluate the effect of Arbuscular Mycorrhizal(AM) Fungi (Funneliformis mosseae) along with the dual inoculation of AM fungi (Funneliformis mosseae) with Rhizobium, Phosphate solubilising bacteria (PSB) and a triple inoculation of AM Fungi (Funneliformis mosseae), Rhizobium, and PSB in Vigna unguiculata (L) Verdc. Growth parameters such as plant height, dry weight of root and shoot, spore number, per cent root colonization, number of nodules was recorded and P and N uptake were estimated at the intervals of 15, 30 and 45 days. Results revealed that inoculation of AM Fungi (Funneliformis mosseae) + Rhizobium+ PSB showed an increase in all the growth parameters when compared with dual inoculation. The combined inoculation of bacteria and AM fungi evidence provide that these two organisms are synergistically involved in the beneficial effects of Vigna unguiculata (L) Verdc.

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