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Minimum tillage

Catalogue: GRDC Research Summaries
" Water Balance of Conservation Farming Systems in WA 2.. With farmers seeking to maximise the benefits of conservation farming techniques, there is a definite trend towards higher levels of stubble retention, and potentially increased diversity of crop species in the rotation... WANTFA are playing a leading role in promoting higher levels of residue cover as a means to gain maximum benefits from conservation farming...
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Catalogue: GRDC Research Summaries
Cropping is expanding in the southern High Rainfall Zone (HRZ) and it is important that we provide farmers with management options that minimise greenhouse gas emissions without reducing productivity... Nitrous oxide emissions in excess of 3 kg nitrogen/hectare/year (equivalent to 1460 kg of carbon dioxide equivalents) have been measured when a high fertility legume pasture in the southern high rainfall zone was sprayed out and cropped with wheat... The management and mitigation options that we are testing in this project are direct drilling of wheat compared to conventional cultivation and the application of a nitrification inhibitor dicyandiamide (DCD), which temporarily shuts down the microbes in the soil nitrogen cycle that convert ammonium to nitrate, and slows the rate of nitrous oxide emission from the soil...
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Catalogue: GRDC Research Summaries
The system Prolonged periods of low rainfall over the past ten years in southern NSW have prompted many growers to become more proactive and adapt to the changing conditions by modifying their farming systems... No-till, stubble retained farming systems are rapidly being adopted to maximise crop water use... Despite the many benefits of this system, the efficacy of pre-emergent herbicides remains one of the major concerns for growers who have adopted this system, and remains a barrier.....
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Catalogue: Ground Cover
Pythium root rot is often misdiagnosed, but new research is increasing our knowledge of damage caused by the disease and offering new control options.. Now research is showing that Pythium can have a big effect on crop growth through the season, resulting in substantial reductions in productivity, even in the absence of 'damping-off'... Results from three years of field trials with wheat demonstrated that an in-furrow application of the Trichoderma inoculant at seeding resulted in: improved crop emergence; reduced levels of Pythium inoculum and root infection; and increases in yield...
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Catalogue: Ground Cover
Dalwallinu, WA, grower Mark Wilson: [Photo (left) by Brad Collis: "It doesn't matter how many kilograms you can grow per millimetre if you don't get the millimetres... Initially Mark just took out the four cultivations, but still ploughed then seeded: "Again, the crops were fine plus we were outlaying less money on fuel, so we kept pushing... The same cautious approach was used to also change their nutrient management: "Nothing happened overnight, but basically the idea developed to get the crop established and then build its potential as the season progressed...
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Catalogue: Ground Cover
Research to test wild radish control.. Mr Ashworth will investigate strategies to reduce the risk of glyphosate resistance in the weed and whether it is developing resilience in response to changing patterns of herbicide use... "Given the past use of glyphosate to control wild radish, and the new use patterns, selection pressures are likely to increase increasing the risk of glyphosate resistance developing."..
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Catalogue: Ground Cover
Time-controlled grazing of pastures consisting of perennials and annuals, including balansa clover, is helping David Giddings achieve high stocking rates and growth rates of his prime lambs... Overall, perennials are providing more feed and extend the period of useable green feed by about a month.".. David decided to move to a 50:50 wheat/canola rotation to reduce grass herbicide use to 50 per_cent of the rotation...
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Catalogue: GRDC Media
Growers praised for efforts to preserve healthy soils.. On the eve of World Soil Day (December 5), Grains Research and Development Corporation (GRDC) Managing Director John Harvey says it is timely to acknowledge the grains industry's efforts in ensuring the long-term fertility of soils, necessary for essential food production... Scientists involved in the Soil Biology Initiative agree that the program is making considerable progress in understanding the composition of the living fraction of soils which support crop production, and how growers can best manage soils to maximise nutrient capture and defend against crop disease...
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Catalogue: GRDC Research Summaries
We have now successfully applied this method to wheat, and have been successful in generating many new semi-dwarfing alleles in the same gene as the original Rht1... The studies now provide us with new sources of height variation in both barley and wheat, Australia?s two main cereal crops... A new method has been developed that allows the isolation of large numbers of mutants involving a gene that is important in regulating growth of wheat and barley...
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Catalogue: GRDC Media
Recent Grains Research and Development Corporation-funded (GRDC) research in the northern region shows native remnant vegetation measures around three per cent soil organic carbon (OC) in the top 10 centimetres of the soil... Soil that has been cropped long term is about 1% OC, which indicates long term cropping has decreased OC by 2%.This is a massive drop in the real value of land... A 2% decrease equates to at least 20 tonnes per hectare of OC lost from the soil (assuming bulk density of only 1.0)...
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