Graeme Cox BEng (Ag) PhD

Dave Cox Farmer

By

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Evolution of Landforming

We have been landforming since agriculture began

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Evolution of Landforming – 1900s Dumpy & Stakes

– 1970s Laserplane

– 1990s Multiplane

– 2000s OptiSurface**Patent Pending

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Benefits of LandformingHigher Yields, Quality and Profit

through• Minimised water logging• Improve infiltration uniformity• Sooner trafficability • Improved crop establishment• Improved uniformity of crop maturity• Reduced weed problems

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OptiSurface Landforming

MUCH BETTER!!

…provides all of the benefits of traditional laser landforming only:

• Much cheaper (up to 80%)• Much less topsoil removal • Much faster

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Case Study C7

• Block: C7 Area: 92 Ha

• Location: DAVCO Farming, Burdekin

• Row Cropping (sugar cane)

• Lateral Move Irrigation

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Existing Topography

32.0

32.5

33.0

33.5

34.0

34.5

35.0

35.5

36.0

Ele

vatio

n (m

)

35.5-36.035.0-35.534.5-35.034.0-34.533.5-34.033.0-33.532.5-33.032.0-32.5

0m

920m

0m

980m50

0m

500m

C7 Not

e: v

ertic

al s

cale

exa

gger

ated

x 1

00

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Plane of Best Fit

C7

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Plane of Best Fit - Cut\Fill Map

Cut: 791m3/ha Cost: $1,190/ha Max Cut: 0.350mC7

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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%

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32.0

32.5

33.0

33.5

34.0

34.5

35.0

35.5

36.0

Elev

atio

n (m

)

35.5-36.035.0-35.534.5-35.034.0-34.533.5-34.033.0-33.532.5-33.032.0-32.5

0m

920m

0m

980m50

0m

500m

OptiSurface Design

C7

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OptiSurface - Cut\Fill Map

Cut: 180m3/ha Cost: $270/ha Max Cut: 0.270mC7

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Long Section Plot

Long section plot

C7

Downslope: 0.111% to 0.333%

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Long Section Plot

C7

Downslope:0.050% to 1.000%

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OptiSurface - Downslope Map

C7

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Runoff Velocity MapFLOW

DIRECTION

C7

Rainfall: 75mm/hr Max Velocity: 0.44m/s

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Runoff Depth Map

C7

Rainfall: 75mm/hr Infiltration:0mm Max Depth: 0.170m

FLOW

DIRECTION

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OptiSurface - Downslope Map

C7

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Design Surface Options– OptiSurface 1D

Row drainage in one direction only

– OptiSurface 2D Row drainage in two directions

– OptiSurface 4DCan drain in any direction as long as it

leaves the field

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Case Study C8 – Existing

C8

LS1LS2

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OptiSurface 2D Design

C8

LS1LS2

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Long Section 1

C8

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Long Section 2

C8

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OptiSurface 4D Design

C8

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OptiSurface 4D Existing

C8

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Mass Haul Optimisation

–Optimise for haul distance

–Reduce cost by up to 70%

–Mass haul value allows for more accurate earthmoving quotes

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OptiSurface - Cut\Fill Map

Cut: 95m3/ha

Cost: $200/ha

Max Cut: 0.163m

B8&B9

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Mass Haul Optimisation

Iteration Cut (m3/ha)

Mass Haul (m3.m)

0 92 2.1 million1 92 1.4 million2 95 0.7 million3 97 1.0 million

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Contact Us:

• Contact us for a FREE Design

• Phone: +61 7 4782 7575 (international) (07) 47827575 (Australia)

• Email: design@optisurface.com

• Visit: www.optisurface.com