Survival and movement of a recombinant strain of Rhizobium leguminosarum biovar trifolii in intact soil core microcosms

Factors Influencing Nodule Occupancy by Inoculant Rhizobia

“…An inoculant strain of R. leguminosarum bv. trifolii occupied 40% of the nodules on the 2.5-cm upper part of the clover roots, whereas this percentage was much smaller on the more distal portion (Erceq et al, 1994). Also, McDermott and Graham (1989) and McLoughlin et al (1990a) reported that soybean inoculants were competitive for crown nodulation, but failed to keep pace with the expanding root system and so contributed little to lateral root nodulation.…”