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soil quality

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Catalogue: Ground Cover
Climate trends mirrored in sowing decisions.. On our existing two properties, we have 260 to 280 hectares in each rotation, starting with canola, then barley, linseed, wheat, then back to canola... This year we have put in wheat, barley, rye, lupins, field peas, vetch and lentils in a 70 per cent cereal/30 per cent legume ratio...
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Catalogue: GRDC Research Summaries
This project aims to develop DNA tests to quantify Free Living Nematode (FLN) groups in soil, which will be useful indicators of soil quality... Nematodes are useful biological indicators of soil health because they: occur in all soils; are readily extracted and identified; have a wide range of food sources; are ecologically and taxonomically diverse; and respond to changes in food sources, as well as soil physical and chemical properties Indices derived from nematode community analyses can be used to provide information about a soil ecosystem with respect to nutrient status, presence of pollutants, disturbance and disease suppression... The project will provide information on free-living nematode communities in key Australian cropping soils, identify groups which will be useful to assess soil biological health and link analysis to soil quality monitoring...
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Catalogue: GRDC Final Reports
The investigation has revealed that there exists a lack of information in Australia relating to the use of organic by-products as fertilisers and soil ameliorants in its cropping systems... While research has been conducted using piggery, chicken, cattle manures and biosolids, it has only been very short term and mostly at rates designed to show an effect within the short time- frame of funding rather than at application rates growers can reasonably be expected to use... At the locations, the application of different forms of by-product at different rates and levels of soil incorporation would be assessed for impacts on yield and soil quality over five seasons...
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Catalogue: GRDC YouTube channel
Soil quality is currently being measured in grain-producing areas across Australia... This monitoring program and associated website www.soilquality.org.au is providing the Australian grains industry with a unique resource on soil quality including soil biology, chemistry and physics... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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Catalogue: GRDC Publications
Overall, soil CEC and SOC content was greatest in the 0.2 and 0.2-2 m fraction, indicating that size, and probably type, of SOM influenced CEC... Kaiser et al. (2003) found that soils with a high content of black carbon showed increased sorption ability compared with plant- and microbial-derived SOM... Addition of organic amendments can increase P availability to plants by decreasing the P adsorption capacity of soils...
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Catalogue: GRDC Updates
" Date: 08.10.2009 USING ROTATION CROPS TO IMPROVE SOIL QUALITY.. Soil structural differences are measured with a cone penetrometer which determines the force needed to push a metal probe slowly into the soil to 600 mm depth... We measured the microbial properties using surface soil samples (0-10 cm) from the crop rotation experiment...
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Catalogue: GRDC Factsheets
KEY poiNtS A range of soil test values used to determine if a nutrient is deficient or adequate is termed a critical range... for Crop growth The critical value indicates if nutrient supply Crop growth not limited by nitrogen and sulfur, which are highly mobile is likely to result in a crop yield response limited by deficiency deficiency in the soil, 0 to 60cm is recommended... KCl-40 S soil tests taken from deeper sampling provide a more reliable prediction of S response in canola...
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Catalogue: GRDC Factsheets
KEY poiNtS A range of soil test values used to determine if a nutrient is deficient or adequate is termed a critical range... for Crop growth The critical value indicates if nutrient supply Crop growth not limited by nitrogen and sulfur, which are highly mobile is likely to result in a crop yield response limited by deficiency deficiency in the soil, 0 to 60cm is recommended... KCl-40 S soil tests taken from deeper sampling provide a more reliable prediction of S response in canola...
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Catalogue: GRDC Media
Get the right advice on soil tests.. When taking the results from test values to fertilizer recommendations, a Fertcare accredited adviser has the training to assess those results, in conjunction with a grower's situation including rainfall, crop, and soil type, to prepare a fertiliser plan," he said... " the results give advisers confidence in the ability of particular soil tests to predict is there is a yield response to be had, and are one of the reasons it is best to ensure your advisor is Fertcare accredited, so you know they have access to this information," Dr Norton said...
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Catalogue: GRDC Publications
The GRDC Soil Biology Initiative (SBI-II, 2009-2014) has partnered with research organisations throughout Australia to work towards the 10-year vision of increased profitability and sustainability of grain cropping as a result of harnessing the biological potential of soil... Timing of N fertiliser additions: Minimising or eliminating fertiliser applications at sowing will enhance microbial processing of soil organic N. Mineralisation measures: Molecular tools that measure the microbial genes associated with organic N release may be used to assess the mineralisation potential in a wide range of soils... Objectives: The project aimed to determine if populations of AM fungi (AMF) in soil are influenced by growth of different break crops, so influencing AM colonisation in the following wheat crop and delivery of soil phosphate (P) to the plants via the AMF. We use a novel method of estimating this delivery separately from direct P uptake by the roots, using radioactive P ( 33P)...
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