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Eighty percent of crop yield loss within a field and within years can often be attributed to variable moisture availability, both too little and too much. Excess moisture also plays havoc with machinery operations and farm efficiency. By improving surface drainage and promoting more uniform infiltration, Optimum Surface Landforming has shown to provide a range of profit boosting benefits at a relatively low cost per hectare resulting in a high Return On Investment (ROI).
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By Dave Cox Farmer Graeme CoxBEng (Ag) PhD
Evolution of Landforming We have been landforming since agriculture began
Evolution of Landforming • 1900s Dumpy & Stakes • 1970s Laserplane • 1990s Multiplane • 2000s OptiSurface* *Patent Pending
Evolution of Landforming • 1900s Dumpy & Stakes • 1970s Laserplane • 1990s Multiplane • 2000s OptiSurface* *Patent Pending
Evolution of Landforming • 1900s Dumpy & Stakes • 1970s Laserplane • 1990s Multiplane • 2000s OptiSurface* *Patent Pending
Evolution of Landforming • 1900s Dumpy & Stakes • 1970s Laserplane • 1990s Multiplane • 2000s OptiSurface* *Patent Pending
Benefits of Landforming • Higher Yields, Quality and Profit through • Minimised water logging • Improve infiltration uniformity • Sooner trafficability • Improved crop establishment • Improved uniformity of crop maturity • Reduced weed problems
OptiSurface Landforming • …provides all of the benefits of traditional laser landforming only: MUCH BETTER!! • Much cheaper (up to 80%) • Much less topsoil removal • Much faster
Case Study C7 • Block: C7 Area: 92 Ha • Location: DAVCO Farming, Burdekin • Row Cropping (sugar cane) • Lateral Move Irrigation
Existing Topography Note: vertical scale exaggerated x 100 C7
Plane of Best Fit - Cut\Fill Map C7 Cut: 791m3/ha Cost: $1,190/ha Max Cut: 0.350m
OptiSurface Design Constraints Minimum Downslope: 1: 900 0.111% Maximum Downslope: 1: 300 0.333% Max. Downslope change: 1: 4000 0.025% Minimum Cross-slope: 1: -200 -0.500% Maximum Cross-slope: 1: 200 0.500% Max. Cross-slope change: 1: 1000 0.100%
OptiSurface - Cut\Fill Map C7 Cut: 180m3/ha Cost: $270/ha Max Cut: 0.270m
Long Section Plot Long section plot Downslope: 0.111% to 0.333% C7
Long Section Plot Downslope: 0.050% to 1.000% C7
Runoff Velocity Map FLOW DIRECTION C7 Rainfall: 75mm/hr Max Velocity: 0.44m/s
Runoff Depth Map FLOW DIRECTION C7 Rainfall: 75mm/hr Infiltration:0mm Max Depth: 0.170m
Design Surface Options • OptiSurface 1D Row drainage in one direction only • OptiSurface 2D Row drainage in two directions • OptiSurface 4D Can drain in any direction as long as it leaves the field
Case Study C8 – Existing LS2 LS1 C8
OptiSurface 2D Design LS2 LS1 C8
Contact Us: • Contact us for a FREE Design • Phone: +61 7 4782 7575 (international) (07) 47827575 (Australia) • Email: support@optisurface.com • Visit: www.optisurface.com