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Ameliorant

Catalogue: GRDC Media
Western Australian grain growers on fact finding bus tours to view systems used by their peers to alleviate non-wetting soils learned that there is no 'single bullet' answer to the soil constraint... "The tours looked at a range of methods that farmers are using to help manage non-wetting soils, which have been identified by the GRDC RCSNs as heavily affecting the profitability and productivity of most WA growers," she said... Non-wetting researchers Margaret Roper, of CSIRO, and Stephen Davies, of DAFWA, said the tours demonstrated that non-wetting soils could be successfully ameliorated by many, often completely different options, ranging from minimum soil disturbance to mouldboard ploughing...
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Catalogue: Ground Cover
The odour might be off-putting, but the use of biosoil, or biosolids - treated, dewatered human sewage sludge - has helped New South Wales grower Danny Flanery to vastly increase the productivity of his soils, doubling their organic carbon content over the past five years... The Murrumbidgee CMA also sponsored his attendance at the 2008 Soil Science Australia Conference in Brisbane, where he was introduced to a range of new ideas for soil management, including the use of biosoil as a soil ameliorant... Danny buys large quantities of biosoil each year, applying it at rates of between 50 and 80t/ha to paddocks as they comes out of a pasture phase...
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Catalogue: GRDC Media
Western Australian grain growers on fact finding bus tours to view systems used by their peers to alleviate non-wetting soils learned that there is no 'single bullet' answer to the soil constraint... "The tours looked at a range of methods that farmers are using to help manage non-wetting soils, which have been identified by the GRDC RCSNs as heavily affecting the profitability and productivity of most WA growers," she said... Non-wetting researchers Margaret Roper, of CSIRO, and Stephen Davies, of DAFWA, said the tours demonstrated that non-wetting soils could be successfully ameliorated by many, often completely different options, ranging from minimum soil disturbance to mouldboard ploughing...
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Catalogue: Nuffield Scholar Reports
Investigation of Zero-Till Farming Systems (ZT) in high rainfall cropping zones (HRZ), and its impact on soil biology and nutrient cycling.. Over time the farmer can achieve an increase in yields, with a decrease in some inputs such as fertiliser and chemicals... The other problem is that when soil is cultivated respiration and oxidisation occurs and lot of valuable plant nutrients are burnt off and not be available later when the plant needs them as discussed earlier...
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Catalogue: Ground Cover
Craig Thompson bought a WEEDit precision sprayer seven years ago and says it has become a crucial tool for summer weed control... A stark drop in growing-season rainfall in WA's northern wheatbelt means growers have to get crop roots much deeper into the soil profile to access moisture.. Craig says that wheat-on-wheat, with the aid of Clearfield wheats, has simplified the system and allowed him to concentrate on the single most important element - holding on to every drop of rain that falls...
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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 Final Reports
Large-scale field experiments on sandy and clay soils at Merredin, Nungarin, Tammin, Kellerberin and Corrigin shires (Western Australia) were conducted by Dr M A Hamza (in collaboration with growers) to find the optimum combination(s) of ripping depth and tine spacing for maximum yield... The major finding was that the depth of ripping could be reduced to 30cm provided that tine spacing was no wider than 30cm... A supplementary outcome was addressed, facilitated by acquisition of a shallow leading tine (SLT) ripper donated by AGROWPLOW and an air-seeder bin funded by GRDC...
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Catalogue: GRDC Research Summaries
Finding the pieces that maximise water use efficiency.. The variation within the strips can be used to tease out soils that are more or less responsive to ameliorative treatments... There are also opportunities to develop other products from the soils and geophysics data sets that will help farmers increase their water use efficiency through improved recognition and remediation of constraints...
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Catalogue: GRDC Publications
Testing of clays is recommended... Dave warns that stock health must be monitored and treated on newly ploughed crops... Peter chose the highest rate of subsoil material of between 200 to 300t/ha of clay rich subsoil to apply to his damaged back paddocks...
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Catalogue: GRDC Final Reports
In a recent survey 96% of growers indicated their knowledge about soil health had increased as a result of this project; 94% indicated they were better at making decisions for their business regarding soil health and 91% indicated information from the Liebe Group had been useful for changing farm practices... Professor Daniel Murphy, of UWA, analysed results from the Liebe Group's long term Soil Biology Trial, which has been measuring soil organic carbon build up since 2003, and the results of this analysis have provided growers with an indication of realistic soil organic carbon levels that can be targeted... Seven fact sheets about soil amelioration have been produced. . They contain concise and practical information to be used as starting points for growers investigating soil amelioration options...
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