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Welcome to the August 2017 OptiSurface Newsletter.

The News Of The Month features users with different applications for OptiSurface around the world.

The Design Of The Month shows demo field for sugarcane production with improved drainage and irrigation.

The Feature Of The Month explains the functionality of our Drainage Analysis Tool

If you have any problems or questions please reply to this email or call me on +61 405-686-425 (Australia) or Preston on +1 870-340-2020 (USA).

 
Regards
Graeme Cox & The OptiSurface Team
DAVCO OptiSurface
Mobile: +61 405 686 425   Skype: graemejcox
Web:  www.optisurface.com  
News: www.twitter.com/OptiSurface
"Celebrating 750,000 Acres of Optimized Agricultural Earthworks"

P.S.
If you haven't taken advantage of OptiSurface yet, we're offering a special service where we will take your topographic data for a field and conduct some FREE analysis and design.  Go here to find out more: http://www.optisurface.com/nlt/
News Of The Month
From our Twitter and Facebook feeds.

Strathmar‏ @Strathmar_ltd 30 Jun 2017
The debut of precision surface drainage #strathmarprecisiongrading #shoule #optisurface

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OptiSurface‏ @OptiSurface 07 July 2017
Field headland earthworks to promote field drainage in vegetables crops with OptiSurface drainage analysis.


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Strathmar‏ @Strathmar_ltd 15 July 2017
Perfect combination of water distribution and surface drainage #precisiongrading #optisurface #topcon


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OptiSurface‏ @OptiSurface 19 July 2017
Fixing Poor Surface Drainage In Midwest USA Corn Field with OptiSurface 2Way and Shallow Cross Drains.

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Wim De Witte‏ @Vario820 31 Jul 2017
Kilverplan ligt gereed voor de #akker #agrifoto met@OptiSurface @Agrometius beter dan #regenverzekering


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Design Of The Month
Improving Irrigation and Drainage for an African Sugarcane Field
A client in Africa is doing a trial for a sugarcane farm and asked us to do a design for their demo field.  Field was flooded irrigated and had some ponding issues.

Existing Topography

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Existing Drainage Analysis

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Proposed Topography

An OptiSurface 1Way design was generated for the field. The main slopes design parameter were 0.25% to 0.50%. We prefer to limit the main slope variability for furrow irrigation to promote infiltration uniformity.
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Proposed Cut/Fill Map

Earthworks ended up at 178 m3/ha which is about 68% earthworks savings from a planar design.
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Taildrain Profile

The blue subzone forces the cross slope to fall continuously to the east to eliminate reverse slopes for the taildrain.
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Feature Of The Month
Drainage Analysis
Overview:  The Drainage Analysis functionality allows you to calculate various useful surface drainage characteristics such as:

  • Ponding Depth Map,
  • Flow Paths Map

This analysis assumes enough rainfall occurs to overflow all depressions in the field.  Ponding is the water that cannot drain away by flowing along the ground surface, so it needs to infiltrate or evaporate to be removed.

Displayed by:
 Tools > Background

Appearance:

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Topography

Surface:  Select the surface the calculation will be based on: Existing Surface or Proposed Surface

Calculation Grid: The cell spacing of the grid that the drainage analysis is calculated on. 10m or 30ft is a typical useful value.


Furrows or Beds

Furrow or Beds Restrict Water Flow Direction: If furrows or beds exist tick this ON.

Furrow/Beds Height (m): The height of the intended furrows in the field. The water will build up in any depressions and then spill across the furrow. The Ponding Map Depth shows water depth in the furrows, not on the beds.

Furrow/Beds Bearing (deg): The direction of the furrows relative to North. Use the ‘Pick’ button to click two points to define the direction or type a number in. Currently, only straight furrows/beds are handled.


Cost Analysis

Typical Gross Income ($/ha/yr or $/ac/yr): Insert the gross income per hectare (or per acre) per year.

Loss In Ponded Areas (%): The loss of crop yield in the areas that pond water in an average year from water logging, weeds and disease.

Loss in Non-Ponded Areas (%): This is to account the losses in timeliness of operations; i.e. planting, spraying and harvesting can be delayed waiting for the ponded areas to dry out. That waiting reduced the yield for the rest of the field. This loss in production is often overlooked but it can be quite significant.

Examples

Drainage Analysis Without Furrows

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Drainage Analysis With Furrows

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