Researcher(s) |
James Challis (Precision Agronomics Australia) Frank D'Emden (Precision Agronomics Australia) Julianne Hill (GRDC RCSN) Caroline Peek (DAFWA) Aidan Sinnott (Precision Agronomics Australia) |
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Year(s) | 2013 |
Contributor | Precision Agronomics Australia |
Trial location(s) |
Beacon, WA
Bencubbin, WA Bodallin, WA Doodlakine, WA Kellerberrin, WA Merredin, WA Narembeen, WA Nungarin, WA Southern Cross, WA, WA |
To highlight the effectiveness of summer weed control in conserving soil moisture for winter cereal cropping in the Central-Eastern Wheatbelt of WA.
Results from a demonstration in December of 2012 suggest weed control had an impact on stored soil moisture and consequent yield in 2013 across a range of soil types at seven locations across the Eastern Wheatbelt. Another factor that could have been quantified in this work, was the effect of weed control on nitrogen status (and consequent effect of N on yield). Opening values were collected at the beginning of the trial but no closing N values were measured. Removing summer weeds has an impact on the nitrogen levels in the soil, and this will be further quantified with more field work in 2014.
Lead research organisation | N/A |
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Host research organisation | N/A |
Trial funding source | GRDC KE12/13-3of4 |
Related program |
Regional Cropping Solutions Network |
Acknowledgments |
This project was made possible through the GRDC’s Kwinana East Regional Cropping Solutions Network and the collaboration of Mick Caughey, Alan and Stuart Yandle, Matt Steber, Ty Kirby, Nick Gillett, Clint Della Bosca, Tim and John Butcher and Scott Dixon. This paper was reviewed by Yvette Oliver and Doug Abrecht. |
Other trial partners | Department of Agriculture and Food WA |
Crop type | Cereal (Grain): Wheat |
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Treatment type(s) |
|
Trial type | |
Trial design |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | 5 May 2013 |
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Harvest date | Not specified |
Plot size | 20m x 10m |
Plot replication | Not specified |
Herbicide |
Application as per treatments: 6L/ha glyphosate applied via knapsack on 13, 14 and 15 December 2012. Blue dye was used to ensure complete coverage. |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Herbicide | Not specified |
Other trial notes |
Soil moisture samples were taken at the initial December site visit, then again on 9 and 10 January 2013 before a summer rainfall event, with final coring undertaken on 26 and 27 January 2013. |
# |
Treatment 1
|
Grain yield (t/ha) |
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1 | █ Sprayed | 3.16 |
2 | █ Unsprayed | 1.55 |
Rainfall trial gsr (mm) | 220mm |
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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.