| Researcher(s) |
Damian Jones |
|---|---|
| Year(s) | 2017 |
| Contributor | Irrigated Cropping Council |
| Trial location(s) |
Kerang, VIC
|
To asses the effect of PGR application on barley
The Plant Growth Regulator trinexapac-ethyl (Moddus Evo) has been shown in previous trials to increase yield in irrigated barley, but not necessarliy due to reduced lodging. This trial appears to indicate that the PGR resulted increased tiller survival in lower plant populations of certain varieties.
Some varities have shown no yield response to PGR application.
Selection of a variety that is not prone to lodging may be a better choice than applying a PGR.
| Lead research organisation |
Birchip Cropping Group |
|---|---|
| Host research organisation |
Irrigated Cropping Council |
| Trial funding source | GRDC BDW00024 |
| Related program |
Maintaining profitable farming systems with retained stubble |
| Acknowledgments | N/A |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Barley |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sow rate or Target density | High: 220 plants/m2, Low: 140 plants/m2 |
|---|---|
| Sowing machinery |
John Shearer 10 row linkage 7 inch row spacing Baker boots Chain harrows |
| Sow date | 9 May 2017 |
| Harvest date | 29 November 2017 Late November |
| Plot size | 15m x 1.42m |
| Plot replication | 3 |
| Fertiliser |
125 kg DAP at sowing 95 kg urea/ha Aug 2 105 kg urea/ha Aug 20
|
| Herbicide |
1.5 l/ha Glyphoste 540 May 7 75 ml/ha Goal May 7 2.5 l/ha Boxer Gold May 9 IBS 750 ml/ha Triathlon July 20 |
| Fungicide |
250 ml/ha Tilt Xtra Aug 1 |
| Seed treatment | Gaucho 600 200 ml/100 kg |
| # | Variety |
Treatment 1
|
Grain yield (t/ha) | Retention (%) | Screenings (<2.2mm sieve) (%) | Plant height (cm) | Grain protein (%) |
|---|---|---|---|---|---|---|---|
| 1 | █ Compass | █ Low Pop'n + PGR | 9.84 | 94.9 | 1.4 | 63.8 | 10.5 |
| 2 | █ Compass | █ Low Pop'n - PGR | 8.73 | 95.5 | 1.2 | 73.7 | 11.4 |
| 3 | █ Compass | █ High Pop'n + PGR | 9.47 | 95 | 1.3 | 62.7 | 10 |
| 4 | █ Compass | █ High Pop'n - PGR | 9.23 | 90.4 | 0.9 | 71 | 11 |
| 5 | █ LaTrobe | █ Low Pop'n + PGR | 9.6 | 86.7 | 3.2 | 63.8 | 11.7 |
| 6 | █ LaTrobe | █ Low Pop'n - PGR | 9.63 | 90.1 | 2.5 | 68.3 | 11.7 |
| 7 | █ LaTrobe | █ High Pop'n + PGR | 9.61 | 84.9 | 3.7 | 66.7 | 11.9 |
| 8 | █ LaTrobe | █ High Pop'n - PGR | 9.74 | 88.9 | 2.4 | 67 | 11.3 |
| 9 | █ Cobra wheat | █ Low Pop'n + PGR | 9.58 | 0.7 | 69.5 | 10.4 | |
| 10 | █ Cobra wheat | █ Low Pop'n - PGR | 9.58 | 1 | 79.7 | 10.7 | |
| 11 | █ Cobra wheat | █ High Pop'n + PGR | 9.44 | 0.8 | 70.8 | 10.5 | |
| 12 | █ Cobra wheat | █ High Pop'n - PGR | 9.55 | 0.8 | 79 | 10.6 |
| Rainfall avg ann (mm) | 375mm |
|---|---|
| Rainfall avg gsr (mm) | 232mm |
| Rainfall trial total (mm) | 425mm |
| Rainfall trial gsr (mm) | 220mm |
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.
