Effect of dual inoculation ofRhizobium and vesicular arbuscular mycorrhizal fungi onPisum sativum

The interaction of two symbionts,Rhizobium (a bacterium) andGigaspora calospora (a VAM fungus) was studied inPisum sativum (a nodulating legume).Pisum sativum plants inoculated with VA mycorrhizal fungi andRhizobium singly and in combination responded favourably as compared to uninoculated control. Characteristically dual inoculation exerted a higher beneficial effect on shoot and root dry mass, phosphorus and nitrogen uptake, nodule formation and degree of mycorrhizal infection than either inoculum alone.