| Researcher(s) |
Matthew Denton Thang Viet Lai Judith Rathjen Maarten Ryder |
|---|---|
| Year(s) | 2018 |
| Contributor | SARDI Minnipa Agricultural Centre |
| Trial location(s) |
Minnipa, SA
|
To determine the potential toxicity of the fungicide P-Pickel T (PPT) to rhizobia applied as a commercial inoculant (peat and freeze-dried) on field pea (R. leguminosarum, group F) in field conditions in a soil with a low rhizobial background.
| Lead research organisation |
South Australian Research and Development Institute |
|---|---|
| Host research organisation |
SARDI Minnipa Agricultural Centre |
| Trial funding source | GRDC 9176500 |
| Related program | N/A |
| Acknowledgments |
GRDC project 9176500 for providing funding for this research. Amanda Cook (SARDI, MAC) for advice on trial management and MAC staff for their technical assistance. Liz Farquharson (SARDI, Waite) for advice and sampling, and Bruce Heddle for providing land for the trial.
Drew E, Herridge D, Ballard R, O’Hara G, Deaker R, Denton M, Yates R, Gemell G, Hartley E, Phillips L, Seymour N, Howieson J and Ballard N, ‘Inoculating Legumes: A practical guide’. GRDC, July 2012 |
| Other trial partners | University of Adelaide |
| Crop type | Grain Legume: Field peas |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow rate or Target density | estimated plant density of 54 plants per m2. |
|---|---|
| Sowing machinery |
A field site with low background of field pea rhizobia was selected on Bruce Heddle’s property, near Minnipa Agricultural Centre. The trial was a completely randomised design with three replications. Pea cv. Oura seeds were coated with the label recommendations for PPT, and then inoculated with either a commercial freeze-dried or peat formulation, again at commercial rates. Seed was sown immediately (0 h) or stored at room temperature in the dark for 24 h before sowing. Plots with no inoculation (Nil) were also sown as controls. The plot sizes were 12 m x 1.8 m with 25 cm row spacing (6 rows), and an estimated plant density of 54 plants per m2.
Before sowing, rhizobial counts from the inoculated and PPT treated/untreated seeds were performed to determine if there were adequate numbers of rhizobia on seed. Seed samples (10 seeds) from all treatments (excluding Nil) were& |
| Sow date | 30 June 2018 |
| Harvest date | Unknown |
| Plot size | 12m x 1.8m |
| Plot replication | 3 |
| Plot randomisation | completely randomised design |
| Rainfall avg ann (mm) | 325mm |
|---|---|
| Rainfall avg gsr (mm) | 242mm |
| Rainfall trial total (mm) | 244mm |
| Rainfall trial gsr (mm) | 178mm |
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.
