Effect of rhizobia and other microbial inoculation treatments on field pea


Research organisatons
Funding source

Trial details

Researcher(s) Ross Ballard, Elizabeth Drew, Steve Barnett and Nigel Charman (SARDI), and Xuyen Le (Flinders University)
Year(s) 2014
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Effect of rhizobia and other microbial inoculation treatments on field pea locations

To investigate the potential of inoculation technologies to improve the nitrogen fixation and/or production of field pea

Key messages

The Hart field site has a background of pea rhizobia that are numerous, but only moderately effective. Inoculation treatment did not affect measured root parameters. Some inoculation treatments increased shoot biomass and pod number, but not grain yield or grain N content. The N benefit from the extra biomass residues is estimated to be 51 kg N/ha

Lead research organisation South Australian Research and Development Institute
Host research organisation Hart Field Site Group
Trial funding source GRDC DAS00128
Related program N/A

The trials was sown and managed by the New Variety Agronomy Group (SARDI, Clare). Funding was provided through GRDC project Optimising Nitrogen Fixation – southern region (DAS00128)

Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Field peas
Treatment type(s)
  • Inoculant: Type
  • Inoculant: Application
  • Inoculant: Method
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2014

Sow date 28 May 2014 8 May 2014
Harvest date 14 August 2014 14 August 2014
Plot size 1.75m x 10m
Plot replication 3

Seeding: 80kg/ha MAP

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Harvest index (value) Nodulation (nodules/plant) Nodule biomass (mg/plant) Pod number (pods/plant) Grain yield (t/ha) Grain nitrogen (%) Aboveground biomass (g/plant)
1 Kaspa Not inoculated 0.34 45 7.1 8 1.897 3.67 15
2 Kaspa Rhizobia (Group F WSM1455 on seed) 0.26 56 8.2 10.6 1.837 3.63 18
3 Kaspa Rhizobia (Group F WSM1455 in furrow) 0.26 62 8.6 10.3 2.017 3.64 21
4 Kaspa Rhizobia (Group E SU303 on seed ) 0.33 54 8.6 8.5 1.883 3.61 15
5 Kaspa Rhizobia (SARDI strain on seed) 0.23 57 8.1 10.9 1.777 3.76 21
6 Kaspa Microbe B to control soil borne disease 0.23 51 7.6 12 1.973 3.73 23
7 Kaspa Microbe X to improve N2-fixation 0.27 47 7.2 10.4 1.953 3.67 19

Grain yield t/ha


Aboveground biomass g/plant


Grain nitrogen %


Harvest index value


Nodulation nodules/plant


Nodule biomass mg/plant


Pod number pods/plant

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties



Site 5, Hart SA 2014

Observed climate information

Rainfall trial gsr (mm) 280mm

Derived climate information

Site 5, Hart SA


Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial last modified: 06-06-2019 15:08pm AEST