Rhizobial Inoculants fact sheet
Inoculating legumes with rhizobia can achieve substantial increases in legume nodulation, grain and biomass yield, nitrogen fixation and post-crop soil nitrate levels.
- The benefits of inoculating legumes with rhizobia (soil bacteria that fix nitrogen) have been recognised in Australian agriculture for more than 100 years.
- Inoculation can result in increases in legume nodulation, grain and biomass yield, nitrogen fixation and post-crop soil nitrate levels.
- These gains are highest when the legume is grown in nil-rhizobia or low-rhizobia soil.
- Benefits can be marginal in soils already containing high numbers of compatible rhizobia.
- Legumes have specific requirements for rhizobia: there are 39 different inoculant groups produced commercially in Australia.
- Formulations for inoculants include peat, clay and peat granules, freeze-dried cultures and liquid cultures.
- Inoculant quality is underpinned by commercial in-house testing and the National Code of Practice and Quality Trademark (Green Tick Logo).
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GRDC Project Code
National, North, South, West