Influence of inoculation with bradyrhizobium japonicum and glomus claroideum on seed yield of soybean under greenhouse and field conditions

Abstract

Soybean plants [Glycine max (L.) Men., cv. Polanka], inoculated with the VAM fungus Glomus claroideum Schenck and Smith and Bradyrhizobium japonicum strain D344, were grown in pots and in the field. The VAM fungus positively influenced N2 fixation, nodulation and N, P, K, and Mg concentrations in the leaves. In pots, (at green pods formation) VAM inoculated plants produced a 24% greater biomass as compared with non‐inoculated plants colonized by native VAM populations. Under field conditions characterized by a high level of P and N, the seed yield of VAM inoculated plants increased in comparison with non‐ and only rhizobia‐inoculated soybean (+28% and 17%, respectively). Glomus claroideum was capable of competing with the native VAM populations both in the greenhouse and in the field experiment.