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soil compaction

Catalogue: Ground Cover
Mullewa grower Andrew Messina is trialling a new deep-ripper that can slice 80 centimetres into the soil to crack hard pans and help overcome compaction issues... Andrew says in 12m-wide and 200m-long paddock strip trials on an area that had been mouldboard ploughed in 2011, the deep-rippers produced wheat yields of 2.7 tonnes per hectare, compared with 2t/ha from the nil-treated area and 2.3 to 2.4t/ha from a conventional deep plough (tilling to a depth of 30cm)... Andrew says the main drawback of ripping to depths below 30cm is having to use a much smaller machine - the Heliripper is about 6m wide, travels at a speed of 7 to 8 kilometres per hour and treats about 5ha/hour...
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Catalogue: Ground Cover
Deep-ripper deals with compaction at Mullewa.. Mullewa grower Andrew Messina is trialling a new deep-ripper that can slice 80 centimetres into the soil to crack hard pans and help overcome compaction issues... Andrew says in 12m-wide and 200m-long paddock strip trials on an area that had been mouldboard ploughed in 2011, the deep-rippers produced wheat yields of 2.7 tonnes per hectare, compared with 2t/ha from the nil-treated area and 2.3 to 2.4t/ha from a conventional deep plough (tilling to a depth of 30cm)...
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Catalogue: Ground Cover
Soil compaction, including its remediation and prevention, is an issue that continues to challenge many growers... In response to grower requests on the peninsula, researchers Cathy Paterson, Ben Ward and colleagues at the South Australian Research and Development Institute (SARDI) Minnipa Agricultural Centre have embarked on a project that they hope will better define the causes and cost of soil compaction in the region... Six sites that represent the major soil types across Eyre Penisula have become the basis for replicated trials, one of them a broadacre trial...
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Catalogue: Online Farm Trials
Not specified.. Download the trial report to view additional trial information.. Available water capacity computed for each of the specified depth increments..
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Catalogue: GRDC 2014 Research Summaries
Australian grain growers have progressively adopted a number of best management practices in order to minimise soil tillage, which is one of the main causes of soil erosion, soil compaction and soil organic matter loss... Little is known about how the increased application of herbicides affects soil biota and soil functions that sustain crop growth and ecosystem services such as crop residue turnover, water holding capacity, soil carbon storage and nutrient cycling... The project will address current knowledge gaps regarding the impact of herbicides on soil biota in all three growing regions of the Australian grains industry. The project objectives include determining the effects of different herbicides on not only soil biological communities and biodiversity, but also quantifying their effects on soil functions critical to ecosystem health...
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Catalogue: GRDC Media
A study into the use of instantaneous pH probes inserted directly into moist soil to measure pH has found they are capable of making accurate measurements and are cheaper than traditionally used soil tests when many samples are required across a paddock... Soil pH is typically measured in WA by taking a soil sample and sending it to a laboratory where the soil is mixed in a solution of 1:5 CaCl2 and measured with a glass probe... But instantaneous pH probes provide the potential to relatively quickly and cheaply measure soil pH at many sites across a paddock, allowing pH and lime application maps to be drawn...
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