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alkaline soil

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Catalogue: Ground Cover
Queensland University of Technology's Professor Peter Grace discusses strategies to help avoid nitrogen losses at a recent GRDC Grains Research Update... The loss is caused by chemical reactions on the surface of the soil, and only occurs in alkaline soils when ammonium-based fertiliser is broadcast and there is no rain to wash it into the soil... Rain is required to wash the fertiliser deeper into the soil profile, but not too much that it could cause denitrification or leaching...
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Catalogue: Ground Cover
A high proportion of phosphorus applied to these soils can remain inaccessible to crops... Phosphorus derived from the fluid form occupies a larger volume of soil surrounding the fertiliser, which increases the likelihood that roots will come into contact with the nutrient... Shoot response of wheat to fluid fertilisers (APP and H 3 PO 4 ) compared to granular fertiliser (Triple P) and a control growing on a Vertosol collected from Minyip in the Wimmera under glasshouse conditions...
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Catalogue: GRDC Updates
Many soils may already have lost much of this extra, slow release P reserve... Soil testing for available P status commonly involves a Colwell test on the 0-10 cm layer... The paper summarises some recent work that attempts to quantify the differences in availability of sparingly soluble P sources as affected by soil acidification...
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Catalogue: Online Farm Trials
Ameliorating alkaline soils with deep ripping and gypsum - 2001.. Not specified.. Available water capacity computed for each of the specified depth increments..
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Catalogue: NVT Online Papers
Canola is often windrowed to ensure all pods are mature at harvest... In summary, windrowing too early can result in lower yields and oil contents and too late will lead to shattering losses... Canola is sold into a deregulated domestic market and the responsibility of finding an acceptable price and arranging a buyer rests with the grower...
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Catalogue: GRDC Publications
Canola is often windrowed to ensure all pods are mature at harvest... In summary, windrowing too early can result in lower yields and oil contents and too late will lead to shattering losses... Canola is sold into a deregulated domestic market and the responsibility of finding an acceptable price and arranging a buyer rests with the grower...
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Catalogue: GRDC Media
Tissue testing a health check-up for micronutrients.. Charlie Walker, member of the GRDC trace elements project advisory committee, says growers should consider tissue testing like a blood test for crops... Incitec Pivot technical and development manager Charlie Walker, who is a member of the GRDC trace elements project advisory committee, says tissue testing can be compared to blood testing in humans...
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Catalogue: GRDC Media
Tissue testing a health check-up for micronutrients.. Charlie Walker, member of the GRDC trace elements project advisory committee, says growers should consider tissue testing like a blood test for crops... Incitec Pivot technical and development manager Charlie Walker, who is a member of the GRDC trace elements project advisory committee, says tissue testing can be compared to blood testing in humans...
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Catalogue: GRDC Final Reports
The mechanisms responsible for effectiveness of fluid fertilisers in calcareous soils, and the ineffectiveness of granular P, were identified chemically and spectroscopically... Field experiments on calcareous and non-calcareous soils in the Victorian Wimmera and Mallee regions have also shown that fluid fertilisers can improve grain yields on these soil types, although the magnitude of grain responses were usually smaller than on the highly calcareous soils in South Australia... There is a growing demand for information on fluid fertilisers and their use in cropping in Australia, as demonstrated by the increasing hits to the fluid fertiliser website, and the growth in circulation of the Fluid Newsletter, and the popularity of the Fluid Workshop held in 2004...
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Catalogue: Ground Cover
Dr Dale Shaner from the US Department of Agriculture explored the implications of the accelerated breakdown of triazine herbicides for Australian growers at the GRDC Grains Research Update for Advisers in Goondiwindi, Queensland... PHOTO: Clarisa Collis Faster breakdown of triazine or Group C herbicides, and its implications for growers around the world, was a central subject at the recent GRDC Grains Research Update in Goondiwindi, Queensland... Keynote speaker Dr Dale Shaner, from the US Department of Agriculture, said it was a global phenomenon and Australian grain growers may also need to rethink their conventional use of triazine herbicides for long-lasting weed control...
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