Smarter Irrigation for Profit
The Smarter Irrigation for Profit - Phase 2 (SIP2) project is a partnership between the dairy, cotton, horticulture, rice and grain sectors, supported by funding from the Australian Government Department of Agriculture, Water and the Environment as part of its Rural R&D for Profit program and each of the industries involved.
The first phase of the project (SIP1) was conducted between 2015 and 2018. The outcomes were significant for the dairy industry in identifying irrigation management practices that were constraining optimal yield of pastures and crops on irrigated areas.
SIP1 measured the outcomes of amended irrigation strategies and technologies on five 'Optimisation Irrigation Dairy Farms' in Victoria, New South Wales, South Australia, Queensland and Western Australia. All SIP1 sites increased energy and water use efficiency, dry matter grown per hectare per day and the overall yield within a specified irrigation period.
These results were achieved by improving irrigation practices such as timing of start-up, using technologies to inform irrigation scheduling and conducting system and pump checks. SIP1 showed that improved water productivity hinged on “getting the basics right.”
SIP2 has been developed using the findings from SIP1. There are four dairy projects within SIP2 (2019 – 2022) with the collective aim to get the irrigation fundamentals right on farm, increase adoption of existing technologies and explore the potential of new strategies and technologies not yet adopted in dairy. These are:
- What's my yield gap? Maximising water productivity - Dairy Australia
- Beyond Water Smart – Tasmanian Institute of Agriculture
- Scaling irrigation management to support whole farm operations – Agriculture Victoria
- Precise real time automated irrigation for cotton and dairy – University of Southern Queensland and Tasmanian Institute of Agriculture
SIP2: The next phase for dairy
SIP2: What's my yield gap? Maximising water productivity
This project aims to fast-track adoption of SIP1 key findings through trials, measurement and benchmarking on 10 Dairy Optimisation Sites through the seven dairy regions on the mainland. Measures including yield and water/power efficiency will be determined by collecting data using standard water productivity and economic metrics across all sites.
All Australian dairy regions have businesses that use irrigation, but the types of application and agronomic systems are diverse. For this reason, new technologies and strategies are being trialled and evaluated in a local context, with input from farmers and service providers of the Dairy Optimisation Site reference group.
Measuring outcomes for dairy
To measure the dairy specific outcomes of the What’s my yield gap? Maximising Water productivity project, standard metrics and measurement equipment has been applied at each site. This will maximise industry-wide impact and assessment of the efficiency and production outcomes of adopting certain irrigation practices and innovations.
These include:
- Soil moisture monitors installed: capacitance probes, real-time telemetry and app-accessible reporting to monitor the effectiveness of irrigation and rainfall on soil moisture
- Irrigation system and pump evaluations: baseline versus improved system efficiencies, Yield monitoring on farm including using growth rate and yield measures to compare against satellite measurement systems including Pasture.io.
- Irrigation scheduling using IrriPasture, an online weather-based water balance calculator. IrriPasture has been further developed to include crops such as maize, sorghum and millet as well as lucern, shallow rooted perennial and annual pastures.
Below is the standard reporting table being used.
Dry Matter |
|
Water |
|
Energy |
|
DM production |
kgDM/ha |
Water Use |
ML |
Energy Use |
kWh |
Growth rate |
kgDM/ha/day |
Water costs |
Total costs($) |
Energy costs |
Total costs ($) |
|
|
Efficiency |
kgDM/ML |
Efficiency |
kWh/ML/mhead |
Dairy Australia is ensuring farmers have access to the latest information to achieve pasture and crop yield potential from irrigation water while improving input efficiency of water, power and labour to increase farm profit.
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SIP1: Key findings for dairy
- Many operators are not getting the basics right. Conducting annual system checks including pumps, getting the start-up time right and avoiding the ‘green drought’ increased productivity by 40% on some sites.
- Variable rate irrigation can achieve productivity gains of 30%.
- Autonomous irrigation is feasible for dairy and has potential for wider application.
SIP 1 recommended increased water productivity for dairy can be achieved by swiftly adopting a number of cost-effective key fundamentals:
- Maintain the irrigation system to ensure efficient and effective operation. Start with a comprehensive irrigation system performance evaluation and implement recommendations. Use available system check lists to prepare for the coming season as an ongoing measure.
- Use water balance calculation tools to inform irrigation scheduling decisions to apply water at the right time and right rate to maintain soil moisture in the readily available water (RAW) zone of the soil profile.
- Monitor soil moisture using professionally installed soil moisture monitors and reliable telemetry to inform irrigation start-up decisions at the commencement of the season or after rainfall events. This technology provides a measurement of the effectiveness of rainfall and irrigation on rising or maintaining soil moisture to within the RAW zone.
- Know the capacity of the irrigation system and schedule irrigation accordingly to maintain soil moisture requirements whilst deploying cost-effective measures such as the use of off-peak power. Potential for the irrigation system to raise soil moisture to the RAW zone for plant growth can become limited by the system's capacity if soil moisture levels are depleted in that zone.
- Measure to monitor: Ensure usage, cost of energy and water can all be monitored against production outcomes. This means monitoring energy bills, installing a flow-meter and taking pasture measurements.
- Maintaining soil moisture within the RAW zone creates the ideal platform for strategic nitrogen use.
Catch Can Testing
Improving irrigation efficiency
Profitable Irrigation Pumping
Reducing emissions with moving water
System Maintenance
Benefits of an irrigation system maintenance check
System Maintenance Check-lists
Scroll to “Management and System Check-lists”
Improved flow on irrigation bays- benefit of spinner cuts
Improved Irrigation Flow
Irrigation scheduling
Optimising irrigation potential
Advanced data-driven irrigation: Where are the losses?
2018 DRF Symposium: James Hills
What is evapotranspiration and how do I use it to schedule irrigations?
Soil moisture monitoring
Soil Moisture Monitoring
Dairy Australia Soil Moisture Monitoring Information Sheet
Irrigation New Zealand Soil Moisture Monitoring Guide
Useful websites
Local Dairy Optimisation Sites
Western Australia – Dardanup
Contact: Sam Taylor on sam@agvivo.com.au
South Australia – Mt Compass
Contact: Cathy Ashby on cathy.ashby@dairyaustralia.com.au
South Australia – Mt Gambier
Contact: Cathy Ashby on cathy.ashby@dairyaustralia.com.au
Western Victoria – Mepunga East
Contact: Graeme Ward on graeme.ward57@bigpond.com
Murray Dairy – Tongala
Contact: Shane Byrne on shane.byrne@dairyaustralia.com.au
Gippsland - MID - Cobains
Contact: Robyn McLean on robyn.mclean@gippsdairy.com.au or Billy Marshall on billy.marshall@agriculture.vic.gov.au
Gippsland – Yarram
Contact: Robyn McLean on robyn.mclean@gippsdairy.com.au or Billy Marshall on billy.marshall@agriculture.vic.gov.au
NSW – Bega
Contact: Kym Revington on revington.techservices@gmail.com
NSW – Tocal
Contact: Peter Smith on sapphireirrig@gmail.com
NSW – Coraki
Contact: Ross Warren on Ross.Warren@daf.qld.gov.au
Pre-season checklists
Pre-season checklist
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Pre-season Checklist Bike Shift Irrigation
PDF, 192.63 KB -
Pre-season Checklist Travelling Irrigators
PDF, 211.98 KB -
Pre-season Checklist Centre Pivots and Laterals
PDF, 335.04 KB -
Pre-season Checklist K-Line Irrigation
PDF, 198.58 KB -
Pre-season Checklist Solid Set Irrigation
PDF, 192.96 KB -
Soil Moisture Monitoring Check
PDF, 249.39 KB
Fact sheets
Factsheets
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Determining readily available water from soil texture
PDF, 500.21 KB -
Irrigating to avoid the “Green Drought”
PDF, 566.35 KB -
Using soil moisture monitoring to schedule irrigation
PDF, 675.23 KB -
Using weather forecasts to schedule irrigation
PDF, 381.4 KB -
Optimising irrigation system performance
PDF, 423.41 KB -
Beyond water smart - Advancing Dairy Irrigation System Performance
PDF, 316.23 KB -
Scaling irrigation management to support whole farm operations
PDF, 429.82 KB -
Smarter irrigation for profit dairy optimisation
PDF, 1.75 MB -
Australian Dairy Irrigation Guide
PDF, 4.95 MB
Expert videos
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James Hills, researcher, Tasmanian Institute of Agriculture
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Lisa Menhenett, Regional Extension Officer, Murray Dairy
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Andrew Tyler, dairy farmer, northern Victoria
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Amjed Hussain, scientist, Agriculture Victoria