Genotypic coadaptation in plant growth promotion of forage species byBacillus polymyxa
- Cite this article as:
- Chanway, C.P., Holl, F.B. & Turkington, R. Plant Soil (1988) 106: 281. doi:10.1007/BF02371225
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The effect of a plant growth promoting strain ofBacillus polymyxa was investigated using genotypically-defined mixtures of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.). Addition ofB. polymyxa to a mixture of the species did not induce significant yield effects in perennial ryegrass, but resulted in a 23% (P<0.05) yield increase in the clover component. The clover yield advantage increased further when clones of the legume were inoculated with theB. polymyxa genotypes with which they had previously coexisted in the field from which collections were made. The highest white clover yield was attained when clones of all three organisms (T. repens, L. perenne, andB. polymyxa) that had previously coexisted in the field were grown together in the experimental system.