
%0 Journal Article
%A Brockwell, J 
%A Dudman, WF 
%T Ecological studies of root-nodule bacteria introduced into field environments.  II. Initial competition between seed inocula in the nodulation of <I>Trifolium subterraneum</I> L. seedlings
%J Australian Journal of Agricultural Research
%D 1968/10/01
%V 19
%N 5
%P 749-757
%K 
%R https://doi.org/10.1071/AR9680749
%U https://www.publish.csiro.au/paper/AR9680749 
%X The ability of three strains of Rhizobium trifolii used in legume inoculants to form nodules on inoculated Trifolium subterraneum L. was examined in field experiments on a soil containing a large natural population of clover rhizobia. The identity of cultures isolated from nodules on young seedlings was established by a gel immune diffusion technique. When a mixture of broth and peat inocula was applied to seed, a large proportion of nodules was attributable to peat-borne rhizobia. In competition with the natural population in the production of nodules on the roots of the host legume, strain WA67 = TA1 > UNZ29. In competition with each other as well as with the naturally occurring rhizobia, WA67 > TAI > UNZ29. The significance of the findings in relation to the persistence in soil of Rhizobium strains applied as inoculant to clover seed is discussed. 
