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Soils of the Birchip Region


Photo: Landscape in the Birchip region showing gilgai microrelief.
Landscape in the Birchip region showing gilgai microrelief

(photo: David Smith, 1996).
Geology and Geomorphology


    The image shown on the map is an enhanced Landsat TM image which was acquired on 27th October 1997. It is a false colour composite with Band4 displayed as red, Band3 as green and Band2 as blue. Healthy crops and pastures appear bright red in the image, with varying shades indicating the stage of growth. Water bodies with clear water show up as deep blue. Other varying shades of colour generally indicate varying ground cover and land conditions. Land shown in cyan is typically bare or fallow.



    The soil pit sites shown on this image have been characterised in association with the Birchip Cropping Group (external link). A series of soil pits were described during 2000 and 2002 as part of the Overcoming Rootzone Constraints (ORZC) project funded by the State Government’s Science, Technology and Innovation (STI) Initiative. Other soil pits were described in late 1993 (as part of a National Landcare Program funded project) and have also been included here. The more recent soil pits have been characterised as part of the 'Healthy Soils' project being run by DPI in association with BCG.


Soil Pit Sites

Site ORZC1
Site ORZC2
Site ORZC3
Site ORZC4
Site ORZC5
Site ORZC6

Site ORZC7
Site ORZC10
Site ORZC11
Site ORZC12
Site ORZC13
Site ORZC14
Site MP22
Site MP24
Site MP25
Site MP26
Site MP27
Site MP28
Site MP34
Site MP35
Site MP36
Site MP40
Site MP41
Site MP42
Site MP43
Site MP44
Site MP45
Site MP46
Site WP1
Site WP3
Healthy Soil Sites

LWA17
LWA20
LWA21


These soil pits have been selected as example soil profiles for major soil types in the Birchip area. There is only limited information available on soil types in this area and only general Land System maps exist at a broad scale of 1:250 000. Therefore, these pit sites should be used as a guide only to some of the soils. It is not possible to give an estimate as to how representative these sites are of major soil types across the region.


Photo: Soil core work as part of ORZC project
Soil core work as part of the ORZC project.

From left: Mohammad Abuzar (DPI), Richard Webster (visiting scientist, UK), Richard MacEwan (DPI), Paul Rampant (DPI), Mark Imhof (DPI) and Steve Ryan.


Photo: Soil core work as part of ORZC project
Soil pit field day held with the Birchip Cropping Group in February 2003.



Acknowledgments

We wish to thank Ian and Warrick McClelland, John Ferrier, John Jones, Rex Barbary and Neil Davis for organising the site selection and soil pit excavation in 1993. A number of landholders must be thanked for allowing soil pits to be excavated during 2000 and 2002 including Leigh and Julie Weir, Ian and David Smith, Glenys Rickard, Alistair and Marcus Ferrier, Graeme and Jeni McLean, Roger, Dianne and Lincoln Lehmann, Eddie and Francis Lee.

Tony Fay (DPI, Birchip) must be thanked for organising a number of the 2002 pit sites.

Photo: Dog in the soil pit!
Everyone is interested in looking at soil pits!



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