Abstract

Medicato sativa plants were grown with and without inoculation with an effectiveR. meliloti strain on nitrogenfree agar slopes. Half of the uninoculated replications were, furthermore, provided with a sufficient amount of the NH4NO3 fertilizer, the fertilizer-treated plants (+N plants) achieved dry matter yield equal to that of inoculated variants. The concentration and uptake of Cl, Mn, Cu, Zn, Br, Sr and Mo were found to be significantly lower in inoculated plants relative to the +N plants indicating that these composition alterations are constitutive to the induced biological nitrogen fixation.

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