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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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Catalogue: GRDC Research Summaries
Crop nutrient budgets for grain and cotton crops in the northern region are consistently negative for most, if not all, nutrients... The balance of nutrients removed in harvested product is coming from the background soil fertility in both organic (primarily N and S) and inorganic (P, K and other cations) forms... Some soil types and locations appear to have multiple nutrient limits on crop growth; Combinations of P, K and/or S in field experiments are increasing crop responses; Soil test after looking at yield maps or soil type areas to identify potential risk zones; Consider plant tissue testing to monitor crop..
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Catalogue: Ground Cover
Mallee grower Allen Buckley has lifted the health of soils on his Waikerie, South Australia, farm... Growers: Allen and Jenny Buckley Location: Waikerie, South Australia Area: 5000 hectares Crops: wheat, cover crops Livestock: 1000 Merino ewes, half joined to Merino rams and half to cross-bred rams Soils: predominantly sandy Average annual rainfall: 250 millimetres (160mm growing season).. Allen is also experimenting with cover crops - another unusual sight in the Mallee - after seeing the results of CSIRO and South Australian Research and Development Institute trials on his farm and visiting growers in the US who sow a mixed cover crop rather than a monoculture...
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Catalogue: Ground Cover
Allen's life quest to nurture living souls.. Allen was one of the first Mallee growers to adopt no-till farming more than 20 years ago; back in an era when the region was notorious for losing millions of tonnes of topsoil to wind erosion... Over the years, the 5000-hectare mixed-farming enterprise Allen and his wife Jenny operate has become an example of how no-till farming can improve soil productivity, increase disease suppression and capture moisture in a low-rainfall environment to increase average yields...
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Catalogue: Ground Cover
Allen's life quest to nurture living soils.. Allen was one of the first Mallee growers to adopt no-till farming more than 20 years ago; back in an era when the region was notorious for losing millions of tonnes of topsoil to wind erosion... Over the years, the 5000-hectare mixed-farming enterprise Allen and his wife Jenny operate has become an example of how no-till farming can improve soil productivity, increase disease suppression and capture moisture in a low-rainfall environment to increase average yields...
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Catalogue: Ground Cover
Charlie Hilton was facing declining plant and stock health at his Bordertown, SA, property until he started investigating biological approaches, which stripped his practice back to basics and are now taking his farming to new levels.. Charlie says ryegrass and saia oats - both of which have very prolific root systems - help increase biology and aeration, and mineralise nutrients that are locked up in the soil, providing the ideal preparation for lucerne pasture or a cropping program... Soil health, says Charlie, is the key to biological farming, and his soils have undergone painstaking analysis, underpinned by the 'hole in the barrel' theory: that there is no point treating the soil with only three major elements if there are large imbalances and deficiencies with other elements...
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Catalogue: Ground Cover
Little could the couple have realised that it would be 30 years before the trial program would finally wind up, and by then be cemented into history as one of the most remarkable sources of knowledge on Australian dryland cropping... The new concept of direct-drilling crops using a non-residual herbicide (Sprayseed ) instead of ploughing was measured against conventional cultivation... "And if we take outcomes from the Mallee Sustainable Farming project alone, we estimate that the benefits of modifying and adopting the research findings from the Avon site amount to about $500 million each year in increased grain production and reduced wind erosion," Dr Rovira said...
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Catalogue: GRDC Media
Farming systems groups across the southern cropping region are laying the foundations for a suite of local development and extension projects under the Grains Research and Development Corporation's major new initiative to address challenges associated with stubble retention... The Maintaining Profitable Farming Systems with Retained Stubble initiative involves farming systems groups in Victoria, South Australia and southern and central New South Wales collaborating with research organisations and agribusiness over the next five years... Sharon Watt, Porter Novelli 0409 675100 Caption: Attending a stubble initiative workshop in Adelaide are CSIRO scientist Clive Kirkby (left), Canberra (ACT); GRDC Southern Regional Grower Services Manager Andrew Rice, Parkes (NSW); SA Research and Development Institute entomologist Michael Nash, Adelaide (SA); and Southern Farming Systems agronomist Ed Hilsdon, Inverleigh (Victoria)...
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Catalogue: Ground Cover
A study of zero-till innovations in Argentina has identified technology that also has the potential to improve crop establishment and yields for Australian growers... Mr Gould says for every extra 100mm of stored moisture in a rainfall zone of 600 to 650mm, typical zero-till growers visited in Argentina are achieving an extra 1700 kilograms per hectare of maize, 1400kg/ha of sorghum, 800kg/ha of wheat and 650kg/ha of soybeans... Mr Gould says strong and well-coordinated links between government agencies and researchers, machinery manufacturers, extension providers and the commercial sector are central to the success of zero-till in Argentina...
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Catalogue: Ground Cover
" Date: 06.01.2012 Technology transfer a must for food productivity 5th World Congress on Conservation Agriculture keynote speaker Dr Pedro Arraes, president of the Brazilian Agricultural Research Corporation (Embrapa)... The head of Brazil's largest rural research agency says the transfer of knowledge and technology to farmers needs to be accelerated if the global agricultural community hopes to feed nine billion people by 2050... But based on Brazil's experience, Dr Arraes said it was possible to achieve these targets with "paradigm-breaking research" that was transferred to farmers quickly...
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