Researcher(s) |
Mohammad Amjad (DAFWA) Brenda Coutts (DAFWA) Geoff Thomas (DAFWA) |
---|---|
Year(s) | 2012 |
Contributor | Facey Group |
Trial location(s) |
Corrigin, WA
|
To determine the value of nitrogen and fungicide on the profitability of new wheat varieties with different disease resistances in wheat on wheat system.
Early differences in Yellow Spot (YS) infection were evident at seedling/tillering stage, infection was greatest in the susceptible variety Yitpi; however, seasonal weather conditions and WSMV infection reduced any further impact from fungal leaf disease. Wheat streak mosaic virus (WSMV) and High Plains Virus (HPV) caused yellowing and stunting of plants across the trial with >75% WSMV infection evident in all plots, differences between varieties in incidence of infection were not significant. However, yield was greatest in varieties with lowest incidence of WSMV infection. WSMV and drought stresses severely reduced yield and as such results are not conclusive for nitrogen and fungicide applications in wheat on wheat systems. Similar DAFWA research in Northern Region (having no WSMV) reported that wheat with sub-optimal nitrogen and no fungicide application is more vulnerable to fungal leaf spot diseases, particularly in a susceptible variety, and may suffer yield losses (compared to optimal N and fungicide) in wheat on wheat systems. Further collaborative work will be planned in 2013 to determine the value of nitrogen and fungicide on the profitability of new wheat varieties with different disease resistances in wheat on wheat system.
Lead research organisation | N/A |
---|---|
Host research organisation | N/A |
Trial funding source | GRDC DAW00218 |
Related program | N/A |
Acknowledgments |
This research is jointly funded by DAFWA and GRDC through 'Wheat Agronomy-building system profitability in the Western Region' (DAW00218). Thanks to Facey Group committee for approving and endorsing the wheat agronomy trials at Corrigin. Special thanks to Shane Hill for giving the trial site. Thanks to Bruce Haig and Rob deGruchy for trial management and technical support. |
Other trial partners | Not specified |
Crop type | Cereal (Grain): Wheat |
---|---|
Treatment type(s) |
|
Trial type | Experimental |
Trial design | Replicated |
Sow rate or Target density | 150 plants/m2 (i.e. Mace @ 80kg/ha) |
---|---|
Sow date | 17 May 2012 |
Harvest date | Not specified |
Plot size | 1.54m x 20m |
Plot replication | 3 |
Psuedoreplication | Not specified |
Fertiliser |
Agras NO 1 @ 110kgha; 50kg/ha Urea |
Herbicide |
Pre-emergent – 0.025kg/ha Chlorsulfuron, 1.5L/ha Trifluralin 480, 4L/ha Sprayseed 250 Post Emergent – 1.4L/ha Bromicide, 0.3L/ha Axial Post Emergent – 0.5L/ha Crusader + 0.3L/ha Prosaro |
# | Variety |
Leaf 2 area affected by yellow spot (%) | High plains virus incidence (%) | Leaf 1 area affected by yellow spot (%) | Wheat streak mosaic virus incidence (%) |
---|---|---|---|---|---|
1 | █ Calingiri | 7.2 | 22 | 9.1 | 99 |
2 | █ Emu Rock | 20.1 | 16 | 14.7 | 99 |
3 | █ Envoy | 10.7 | 22 | 12.3 | 87 |
4 | █ Cobra | 5.1 | 55 | 4.6 | 91 |
5 | █ Wyalkatchem | 9.4 | 16 | 14.9 | 89 |
6 | █ Mace | 9.7 | 16 | 6.1 | 87 |
7 | █ Yitpi | 17.5 | 5 | 47 | 82 |
8 | █ Corack | 12.7 | 22 | 5.6 | 81 |
9 | █ Magenta | 10.4 | 22 | 6.5 | 78 |
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.