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soil water repellence

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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
Grower adoption and implementation of strategies to manage soil water repellence in farming systems.. No detailed time-series soil surveys have been conducted to confirm the perception that water repellence is increasing the expression of the constraint is easier to diagnose than most because of the obvious nature of the impacts on establishment, water infiltration and variable soil wetting... The grower intends to continue mouldboard ploughing and using the paired row seeder which is also a good implement for seeding ploughed areas...
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Catalogue: GRDC Updates (West)
" Grower adoption and implementation of strategies to manage soil water repellence in farming systems.. No detailed time-series soil surveys have been conducted to confirm the perception that water repellence is increasing the expression of the constraint is easier to diagnose than most because of the obvious nature of the impacts on establishment, water infiltration and variable soil wetting... The grower intends to continue mouldboard ploughing and using the paired row seeder which is also a good implement for seeding ploughed areas...
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Catalogue: Ground Cover
Experience builds strategies for water-repellent soil.. Recent research indicates that some formulations only work on certain soil types, such as the forest loamy gravels or on firmer soils with reasonable clay content, and are less effective on repellent sands... The results indicate a 55 per cent chance of achieving a yield increase of 400kg/ha or more in year one...
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Catalogue: Ground Cover
A pit face showing the effects of soil redistribution after tillage in a GRDC-funded project at Badgingarra... The imaging is providing more information about how different tillage practices mix the soil through their working depth... "We have a general idea about how inverting the soil will affect water repellence, weed establishment, the seedbed, subsoil compaction and crop emergence," he says...
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Catalogue: Ground Cover
A pit face showing the effects of soil redistribution after tillage in a GRDC-funded project at Badgingarra... The imaging is providing more information about how different tillage practices mix the soil through their working depth... "We have a general idea about how inverting the soil will affect water repellence, weed establishment, the seedbed, subsoil compaction and crop emergence," he says...
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Catalogue: GRDC Media
Seeding rates theory holds water for repellent soils.. Topsoil water repellence was measured at all sites using the Molarity of Ethanol Droplet (MED) test... "At Yealering, the use of soil wetters increased the plant numbers over the control by at least 18 per cent at the 60kg/ha seed rate and 22 per cent at the 120klg/ha seed rate," he said...
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Catalogue: GRDC Media
Seeding rates theory holds water for repellent soils.. Topsoil water repellence was measured at all sites using the Molarity of Ethanol Droplet (MED) test... "At Yealering, the use of soil wetters increased the plant numbers over the control by at least 18 per cent at the 60kg/ha seed rate and 22 per cent at the 120klg/ha seed rate," he said...
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