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soil inversion

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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture and Food, Western Australia... Overall, 60-70 per cent of flour is used in traditional flat breads, 20-25 per cent of flour is used in western style breads and 5-10 per cent is used in cakes and biscuits... In summary, canola varieties sown 2-3 weeks earlier than normal (early to mid April) can be grazed in winter prior to bud elongation (usually providing 600-800 dse grazing days/ha) and recover with no impact on yield or oil...
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Catalogue: GRDC Updates (West)
" Managing nutrition on soils that have been treated for water repellence by cultivation.. A comparison of N uptake at 10 N and 50 N showed significant increases in N uptake in the nil and banded wetter though not in mouldboard and spading... The results suggest that soil nitrogen is more available in the mouldboard and spading treatments than in the nil and banded wetter...
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Catalogue: Ground Cover
Mouldboard plough outperformed spader for weed suppression.. When the weed population was checked in March 2010 after a wet summer, Andrew says the results showed mouldboard ploughing had outperformed spading... The paddocks nominated for mouldboard ploughing are scheduled for the end of the sowing program, the delay allowing time for the opening rains to have thoroughly wet the soil down to 300mm...
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Catalogue: GRDC Media
"Currently only a small proportion of growers test soils to this depth, but it is necessary to provide the information they need to help them decide whether to apply lime before or after mouldboard ploughing or spading," he said... "After mouldboard ploughing or spading, but before seeding, growers should ideally go back and sample soils a second time to a depth of 20cm to help them assess soil nutrition requirements - particularly for phosphorus and potassium... "If growers do not have enough time to do nutrient testing between mouldboard ploughing or spading, and seeding, they need to make sure they test for nutrient levels, as well as pH, when soil testing the first time."..
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Catalogue: Ground Cover
Mouldboard ploughing could help lift yields in sandy soils.. Trials in WA show mechanical soil inversion could reduce soil constraints and herbicide-resistant weeds in sandy soils By Nicole Baxter Key points Researchers say inverting sandplain soils using a mouldboard plough or rotary spader once every 10 to 15 years could help manage 'hostile' subsoils, non-wetting sands and herbicide-resistant weeds... Dr Davies says deep-ripping to remove compaction resulted in similar increases in productivity, but the added benefits of mouldboard ploughing include improved weed control, reduced soil water repellence and an opportunity to increase soil pH through lime incorporation...
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Catalogue: GRDC Updates (West)
The use of a mouldboard plough with a skimmer attached, that fully inverts the soil to bury weed seeds from on or near the surface to a depth of 15 cm or more, would result in a dramatic reduction of seedling emergence for the majority of weed species... Crop Updates is a partnership between the Department of Agriculture and Food, Western Australia and the Grains Research & Development Corporation 282.. We still have many years ahead of growers experiencing the hardships of resistant weed management before they turn the corner and get on top of the problem...
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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 Updates
Soil mixing such as rotary spading often proves an excellent clay incorporation method and offers opportunities for simultaneous incorporation of soil improvers such as lime or gypsum... The paired row seeding boots gave the highest yield response over knife points with nearly a 1t yield increase on the pale deep sand and a 650 kg/ha yield increase on the sandy gravel... Using rounded or 'V'-shaped press-wheels can minimise the risk of furrow collapse and infill and also prevent the furrow side walls being ripped up, which can occur with more rectangular shaped press-wheels creating a tumbling mass of soil behind the press wheel and poor product placement...
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Catalogue: GRDC Updates (South)
Supported by Research Update sponsored by.. In summary there was no "concerning" level of seed loss observed at any trial or timing, correlating well with the yield data... In summary, yield loss as a result of delayed windrow timing assumedly through shattering has not been demonstrated except in one extreme case with very late timings with colour change in excess of 100%...
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Catalogue: GRDC Updates (West)
Impact of soil inversion, soil dilution and claying on non-wetting sandplain soils Stephen Davies, Peter Newman and Breanne Best, Department of Agriculture and Food, Western Australia.. Soil penetration resistance was measured with a Rimik CP40 cone penetrometer when the soil was at field capacity in both trials... The soil pH deeper in the soil profile was not measured at the time but is assumed to increase to around 5, which is typical for the soil type...
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