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Water infiltration

Catalogue: Ground Cover
Paul experimented with where to place the wetting agent (on top of the soil, next to the seed, below the seed) and found he could achieve good germination the first year, but patchy results the following year... The knife point runs just to the left of the previous year's stubble row to avoid bulldozing, and a wing set to the right of the boot places the seed under the existing stubble to target the moisture zone... The iTILL device runs a sensor over the stubble, while two hydraulic rams on the drawbar steer the seeder independently to the tractor to ensure the seed is placed into the moisture zone established by the previous crop...
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Catalogue: GRDC Media
The 2013 Grains Research and Development Corporation (GRDC) western region Driving Agronomy audio compact disc includes 14 interviews by presenter Chris Brown with key GRDC staff and cropping experts... GRDC western region grower services manager Darren Hughes discusses how the GRDC is addressing top western region RD&E priorities including frost, weeds, non-wetting soils, soil pH and compaction and water use efficiency (WUE)... Other interviews feature detailed discussion about topics including non-wetting soil strategies; WeedSmart; wild radish control; ryegrass control; herbicide testing; and grain storage...
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Catalogue: GRDC Media
Hear the latest in grains research.. Long hours spent in the header or truck at harvest time provide the perfect opportunity to tune into the latest news in grains research, development and extension... The 2012 Grains Research and Development Corporation (GRDC) western region Driving Agronomy audio compact disc features interviews by presenter Chris Brown with key staff, researchers and consultants...
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Catalogue: GRDC Media
The Grains Research and Development Corporation (GRDC) will fund the short-term Regional Cropping Solutions Network (RCSN) investments targeting important research, development and extension (RD&E) issues... "The five western region RCSNs align with WA's port zones and meet formally twice a year with the main objective of identifying issues critical to ensuring the prosperity of the grains industry in their area," he said... Mr Roberts said that in addition to the RCSN investments, the GRDC External Investment Plan 2015-16 outlined longer-term investments to be made by the GRDC...
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Catalogue: Ground Cover
Combining precision farming tools with Yield Prophet is allowing Western Australian growers to apply inputs to crops based directly on subsoil moisture.. Darren Cobley, Ellendale, Western Australia, estimates using precision agriculture and Yield Prophet to manage inputs according to plant-available moisture has saved him about $20 per hectare on potash alone... "On better soils we'll apply about 100kg/ha of seed wheat as it is more likely to germinate," he says...
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Catalogue: Ground Cover
He estimates 90 per cent of the 2400 hectares he uses for cropping on his farm does not wet-up on the surface (0 to 10-centimetre layer) during the growing season unless there is a major rain event... Benefits of claying "On the treated areas, we have probably doubled our crop yields in favourable seasons - although seasonal variation makes it hard to gauge what the actual gains have been," Clint says... Clint says a major benefit of claying is that weeds germinate in a tighter period in the first year, allowing an effective first knockdown herbicide application...
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Catalogue: Ground Cover
Sowing strategies studied for yield effects.. Research is demonstrating the potential for sowing strategies to improve crop productivity on sandy soils in the southern cropping region... Dr Desbiolles says trials to date also show that sowing into non-wetting sands could significantly benefit from furrow seeding technology that clears the top water-repellent layer away from the seed row and promotes seed placement into moisture...
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Catalogue: GRDC Research Summaries
" Delivering agronomic strategies for water repellent soils in WA.. Existing agronomic options are available to manage water repellent soils including furrow sowing, use of soil wetters, spreading and incorporation of clay rich subsoil and alternative land use options... 3) An extension program designed to empower growers and grower groups to identify the severity of non-wetting soils, the likely impact on grain yield, and the profitability of management strategies including an assessment of the drivers, barriers and extent of grower practice change...
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Catalogue: GRDC Media
A small group of southern growers and researchers recently participated in a tour to address this question and gather information about other practices to manage water repellent soils... The group also travelled to the Pingrup farm of Paul Hicks who is developing a seeding system to alleviate non-wetting soils... Mr Roberts said the GRDC was investing significant funds into projects aimed at improving crop profitability from non-wetting soils, and was keen to extend to all growers the knowledge generated from research and grower experience. "..
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Catalogue: GRDC Media
Remediating sandy soils with clay-rich subsoil can often generate substantial crop yield improvements, providing appropriate methods are followed... The Grains Research and Development Corporation (GRDC) has just produced a new publication in which eight growers - including three from WA - share their stories about their use of clay in improving their soils and productivity... According to the GRDC, the millions of hectares of deep sand or sand over clay-rich subsoils which are used for agricultural production, mainly in SA and WA, present a range of challenges due to their poor water-holding capacity, inherent low fertility, extremes of pH, low levels of microbial activity and vulnerability to wind erosion...
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