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<title>UTas ePrints - Effects of agricultural management on Sodosols in northern Tasmania</title>
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<meta content="Cotching, William Edward" name="eprints.creators_name" />
<meta content="Cooper, J." name="eprints.creators_name" />
<meta content="Sparrow, L.A." name="eprints.creators_name" />
<meta content="McCorkell, B.E." name="eprints.creators_name" />
<meta content="Rowley, W." name="eprints.creators_name" />
<meta content="Bill.Cotching@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-10-08 22:59:36" name="eprints.datestamp" />
<meta content="2008-01-08 15:30:00" name="eprints.lastmod" />
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<meta content="Effects of agricultural management on Sodosols in northern Tasmania" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="300000" name="eprints.subjects" />
<meta content="300100" name="eprints.subjects" />
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<meta content="organic carbon, microbial biomass, soil strength, aggregate stability, macroporosity,
land management.
eSWWaR" name="eprints.keywords" />
<meta content="Attributes of 25 Tasmanian sodosols were assessed using field and laboratory techniques to determine
changes associated with 4 typical forms of agricultural management [long-term pasture, cropping with
shallow tillage using discs and tines, cropping (including potatoes) with more rigorous and deeper tillage
including deep ripping and powered implements, and cropping (including potatoes) where the potatoes
were harvested when the soil was wet]. Soil organic carbon in the top 150 mm was 2.7% under long-term
pasture compared with 1.8% in rigorously tilled cropping paddocks, and microbial biomass C values
were 194 and 129 mg/kg, respectively. Readily oxidisable organic C concentrations were 1.8 mg/g and
1.3 mg/g, respectively. Infiltration rate was greater in paddocks with shallow tillage cropping than longterm
pasture but was 43% less in paddocks which had grown potatoes and 70% less after a wet potato
harvest. Dry aggregate-size showed no change under shallow tillage cropping compared with long-term
pasture but decreased significantly in more rigorously tilled potato cropping paddocks. Aggregate stability
in all cropped paddocks was nearly 50% less than in long-term pasture paddocks, with values in intensively
tilled potato cropping paddocks approaching relatively low levels. Colwell extractable phosphorus (P)
increased with all cropping, particularly after potatoes. Lower organic carbon and poorer physical
properties were associated with paddocks which had grown potatoes, which adds weight to the view that
cropping rotation and associated soil management practices are critical for sustainable management of
Tasmanian sodosols. Farmers were surveyed about their views of the condition of their paddocks. They
identified more healthy than unhealthy soil attributes under all management histories but reported more
unhealthy soil attributes when potatoes were included in their rotation." name="eprints.abstract" />
<meta content="2001" name="eprints.date" />
<meta content="Australian Journal of Soil Reserch" name="eprints.publication" />
<meta content="39" name="eprints.volume" />
<meta content="4" name="eprints.number" />
<meta content="711-735" name="eprints.pagerange" />
<meta content="10.1071/SR00029" name="eprints.id_number" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="0004-9573" name="eprints.issn" />
<meta content="http://dx.doi.org/10.1071/SR00029" name="eprints.official_url" />
<meta content="References
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Effects of management on Tasmanian sodosols 729
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" name="eprints.referencetext" />
<meta content="Cotching, William Edward and Cooper, J. and Sparrow, L.A. and McCorkell, B.E. and Rowley, W. (2001) Effects of agricultural management on Sodosols in northern Tasmania. Australian Journal of Soil Reserch, 39 (4). pp. 711-735. ISSN 0004-9573" name="eprints.citation" />
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<meta content="Sparrow, L.A." name="DC.creator" />
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<meta content="Attributes of 25 Tasmanian sodosols were assessed using field and laboratory techniques to determine
changes associated with 4 typical forms of agricultural management [long-term pasture, cropping with
shallow tillage using discs and tines, cropping (including potatoes) with more rigorous and deeper tillage
including deep ripping and powered implements, and cropping (including potatoes) where the potatoes
were harvested when the soil was wet]. Soil organic carbon in the top 150 mm was 2.7% under long-term
pasture compared with 1.8% in rigorously tilled cropping paddocks, and microbial biomass C values
were 194 and 129 mg/kg, respectively. Readily oxidisable organic C concentrations were 1.8 mg/g and
1.3 mg/g, respectively. Infiltration rate was greater in paddocks with shallow tillage cropping than longterm
pasture but was 43% less in paddocks which had grown potatoes and 70% less after a wet potato
harvest. Dry aggregate-size showed no change under shallow tillage cropping compared with long-term
pasture but decreased significantly in more rigorously tilled potato cropping paddocks. Aggregate stability
in all cropped paddocks was nearly 50% less than in long-term pasture paddocks, with values in intensively
tilled potato cropping paddocks approaching relatively low levels. Colwell extractable phosphorus (P)
increased with all cropping, particularly after potatoes. Lower organic carbon and poorer physical
properties were associated with paddocks which had grown potatoes, which adds weight to the view that
cropping rotation and associated soil management practices are critical for sustainable management of
Tasmanian sodosols. Farmers were surveyed about their views of the condition of their paddocks. They
identified more healthy than unhealthy soil attributes under all management histories but reported more
unhealthy soil attributes when potatoes were included in their rotation." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Effects of agricultural management on Sodosols in northern Tasmania</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Cotching, William Edward</span> and <span class="person_name">Cooper, J.</span> and <span class="person_name">Sparrow, L.A.</span> and <span class="person_name">McCorkell, B.E.</span> and <span class="person_name">Rowley, W.</span> (2001) <xhtml:em>Effects of agricultural management on Sodosols in northern Tasmania.</xhtml:em> Australian Journal of Soil Reserch, 39 (4). pp. 711-735. ISSN 0004-9573</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2098/1/sodosols.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2098/1/sodosols.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />700Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2654" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/SR00029">http://dx.doi.org/10.1071/SR00029</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Attributes of 25 Tasmanian sodosols were assessed using field and laboratory techniques to determine
changes associated with 4 typical forms of agricultural management [long-term pasture, cropping with
shallow tillage using discs and tines, cropping (including potatoes) with more rigorous and deeper tillage
including deep ripping and powered implements, and cropping (including potatoes) where the potatoes
were harvested when the soil was wet]. Soil organic carbon in the top 150 mm was 2.7% under long-term
pasture compared with 1.8% in rigorously tilled cropping paddocks, and microbial biomass C values
were 194 and 129 mg/kg, respectively. Readily oxidisable organic C concentrations were 1.8 mg/g and
1.3 mg/g, respectively. Infiltration rate was greater in paddocks with shallow tillage cropping than longterm
pasture but was 43% less in paddocks which had grown potatoes and 70% less after a wet potato
harvest. Dry aggregate-size showed no change under shallow tillage cropping compared with long-term
pasture but decreased significantly in more rigorously tilled potato cropping paddocks. Aggregate stability
in all cropped paddocks was nearly 50% less than in long-term pasture paddocks, with values in intensively
tilled potato cropping paddocks approaching relatively low levels. Colwell extractable phosphorus (P)
increased with all cropping, particularly after potatoes. Lower organic carbon and poorer physical
properties were associated with paddocks which had grown potatoes, which adds weight to the view that
cropping rotation and associated soil management practices are critical for sustainable management of
Tasmanian sodosols. Farmers were surveyed about their views of the condition of their paddocks. They
identified more healthy than unhealthy soil attributes under all management histories but reported more
unhealthy soil attributes when potatoes were included in their rotation.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">organic carbon, microbial biomass, soil strength, aggregate stability, macroporosity,
land management.
eSWWaR</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/300000.html">300000 Agricultural, Veterinary and Environmental Sciences</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300100.html">300000 Agricultural, Veterinary and Environmental Sciences > 300100 Soil and Water Sciences</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2098</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr William Cotching</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">09 Oct 2007 09:59</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2098;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2098">item control page</a></p>
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