| Researcher(s) |
Kaidy Morgan Mikaela Tiller |
|---|---|
| Year(s) | 2025 |
| Contributor | Hart Field Site Group |
| Trial location(s) |
Hart, SA
|
| Further information | View external link |
Two plot trials were conducted at Hart, SA in 2025 to evaluate the efficacy of urea with or without inhibitors at various rates on wheat
• High starting soil N and below average growing season rainfall (Decile 3) limited treatment effects in the first season of this trial.
• There were no differences observed between inhibitor products or nitrogen rates for any of the in-season observations carried out.
• The dual inhibitor product applied at 75% and 100% of standard fertiliser rate outperformed the untreated control for grain protein (%), however did not differ from plots that were treated with standard urea (no inhibitor).
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC UOM2404-007RTX |
| Related program | N/A |
| Acknowledgments |
The research undertaken as part of this project is made possible by the significant contributions of growers through both trial cooperation and the support of the GRDC. The authors would like to thank them and for their continued support (GRDC Project UOM2404-007RTX). Hart also acknowledge the collaboration of The University of Melbourne as the team who lead this national project. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sowing machinery |
Small-plot knife-point press wheel seeder |
|---|---|
| Sow date | 23 May 2025 |
| Harvest date | 5 December 2025 |
| Plot size | 1.75m x 10m |
| Plot replication | 3 |
| Fertiliser |
Seeding: MAP (10:22) Zn 1% @ 80 kg/ha Refer to the trial report for more details |
| Pesticide |
Throughout the growing season the trial was managed through the application of pesticides to ensure an insect, weed and disease-free canopy. |
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.
