There are three key considerations in achieving successful nodulation of legumes. Firstly, the host plant needs to be suited to the conditions in which it is grown. Secondly, there needs to be a sufficient number of a compatible strain of rhizobia for the host plant. Thirdly, there needs to be capacity for communication (signalling) between the host plant and the rhizobia for root infection and nodulation to occur. Suboptimal conditions including soil acidity, aridity, low clay content of soil, inadequate nutrient availability (for the host plant and the rhizobia) and/or the presence of herbicide residues can impact the host plant, the rhizobia and/or the interaction of plant and rhizobia thus reducing the formation of an effective symbiosis and reducing potential nitrogen fixation. Nodulation and nitrogen fixation are not a given when growing legumes. Legumes that don’t form an effective symbiosis use nitrogen (N) from the soil pool rather than contributing to building soil N.
|Title of host publication||Grains research update|
|Subtitle of host publication||Driving profit through research|
|Number of pages||6|
|Edition||Lake Cargelligo, 11th March 2020|
|Publication status||Published - 11 Mar 2020|
|Event||GRDC Grains Research Update - Lake Cargelligo Bowling Club, Lake Cargelligo, Australia|
Duration: 11 Mar 2020 → 11 Mar 2020
|Conference||GRDC Grains Research Update|
|Period||11/03/20 → 11/03/20|
Hackney, B., Rigg, J., Galea, F., Flinn, S., Leighton, E., Reardon, D., Haskins, B., Whitworth, R., McMaster, C., & Stevenson, A. (2020). Fixing more N by improving inoculant performance in sub-optimal conditions. In Grains research update: Driving profit through research (Lake Cargelligo, 11th March 2020 ed., pp. 26-31). [DAN1901 002 RTX] GRDC.