Fixing more N by improving inoculant performance in sub-optimal conditions

Belinda Hackney, Jessica Rigg, Francesca Galea, Simon Flinn, Ewan Leighton, Daryl Reardon, Barry Haskins, Rachael Whitworth, Colin McMaster, Alan Stevenson

Research output: Book chapter/Published conference paperConference paperpeer-review


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.
Original languageEnglish
Title of host publicationGrains research update
Subtitle of host publicationDriving profit through research
Number of pages6
EditionLake Cargelligo, 11th March 2020
Publication statusPublished - 11 Mar 2020
EventGRDC Grains Research Update - Lake Cargelligo Bowling Club, Lake Cargelligo, Australia
Duration: 11 Mar 202011 Mar 2020


ConferenceGRDC Grains Research Update
CityLake Cargelligo
Internet address


Dive into the research topics of 'Fixing more N by improving inoculant performance in sub-optimal conditions'. Together they form a unique fingerprint.

Cite this