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Project Partners: CSIRO, FarmLink Research, Farmers and Advisors
Project Code: GRDC CSP-00174
Project Duration: 2013-2017
Project Location: FarmLink Region
Project Aim: To investigate the potential of management systems to maintain profitability when farming in full stubble retention systems.
Long term trial data from this region has shown negative impacts on yields when retaining stubble to be 0.3t/ha in wheat and 0.4t/ha in canola, (Kirkegaard et al).
Crop sequences for seeding equipment. Disc seeders have been widely adopted in our region to facilitate trouble free establishment of crops into large stubble loads. The disc seeder system has no registered pre-emergent herbicides available for weed control. Farmers and advisors are leading the development of systems that will successfully control a range of weeds. Crop sequences will be an additional tool to combat problem weeds in both the disc and tyne seeding equipment. This will be a small plot trial established into an existing population of annual ryegrass at the Temora Agricultural Innovation Centre.
Rotary harrows for improved herbicide efficacy. Local growers have been trialing the use of steel rotary harrows to increase herbicide efficacy, establishment percentages and reduce the impact of stubble born diseases. A farmer sown strip trial will be carried out to determine the differences between a range of treatments.
Harvest and post harvest stubble management. Some growers are harvesting at low heights to allow easy establishment of the following years crop. This can reduce harvest efficiency and increase the time taken to complete harvest operations. A replicated farmer sown trial looking at the impact of short and high stubble height compared to post harvest treatments of burning and K-line trash cutting will be established. Harvest delays increase potential for weather damage of grain crops which can decrease profitability.
Stubble management, nutrition and moisture conservation in mixed farming systems. This is an extension of the Water Use Efficiency Project and will be conducted at this trial site. Each plot will contain strips of knife point, spear point and disc openers to compare the impacts on each of grazing, stubble retention and burning.
Along with treatments listed above we have the capacity to establish additional experiments to investigate issues arising during the life of the project. Data will be collected on a wide range of aspects such as soil moisture, nutrition, establishment, early vigor, dry matter production, yield, diseases, pests, canopy and soil temperatures. These measurements will enable the impacts of a range of stubble management practices to be determined.
Over the duration of the project a range of publications will be created and listed below for download.
|Row Spacings||Stubble Loads||Disease Strategies||Nitrogen Management|
| Grazing Stubble
||Reducing Stubble||Break Crops||Harvest Contractors|
|McColl Case Study||Holding Case Study||Dart Case Study||Sinclair Case Study
| Carey Case Study
||Coleman Case Study||Clemson Case Study
||Ingold Case Study|
The Seasons in Stubble Series resides on FarmLink’s YouTube Channel and has been added to as the project progressed. The full suite of videos can be viewed via the playlist https://www.youtube.com/playlist?list=PLO2dsjcfxv9-HoiqZO4sGPPeMoFjYUq6u
Stubble Demonstration Day 2014 Intro video can be viewed at http://youtu.be/zpiF3js4U44
The demo day featured a range of equipment trials, with the following videos also available for viewing –
Harper Stubble Cruncher - http://youtu.be/SetVD1OH9Iw
K-Line Speed Tiller - http://youtu.be/t-2R5OexiuI
K-Line Trash Cutter - http://youtu.be/ILhAN8O12tw
Lemken Heliodor - http://youtu.be/3gq2XZ9MfFI
Other videos include -
Herbicides in Stubble - https://youtu.be/Fn9VeUaQzBw
Nitrogen Management - https://youtu.be/VfAQVirBIl4
Grazing Stubble - https://youtu.be/tne7jOKQ9c4
Break Crops in Stubble - https://youtu.be/JCneaUyfJEU
Harvest & Post Harvest Stubble Management
Throughout 2013 and 2014, FarmLink Research and the GRDC partnered to conduct a paddock scale experiment comparing plant growth, yield and profitability of different harvest and post harvest stubble management techniques. The project was established on the property of Ben and Lou Beck at Downside.
View the video about the project - http://youtu.be/M6USwWXl-Tk