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variable rate application

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Catalogue: GRDC Updates
" Date: 16.09.2009 NEW SPRAY TECHNOLOGY DELIVERS VARIABLE RATE APPLICATION WITHOUT A CHANGE IN DROPLET SIZE.. A valuable way to use this capability is to adjust pressure and droplet size depending on wind conditions and proximity to spray sensitive areas... Rate and speed were maintained pressure was reduced to increase droplet size while spraying north end of field...
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Catalogue: GRDC Media
Moisture retention and VRT paying off for Egans.. To improve their profitability and productivity, Scaddan growers Gavin and Elaine Egan pay keen attention to summer weed control and in recent seasons have introduced variable-rate technology (VRT) for application of inputs... In 2012, the Egans returned to a blanket rate in their fertiliser applications after a hailstorm at the end of 2011 wiped out most of their cereals, leaving little harvest data for the yield mapping on which VRT applications are based...
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Catalogue: GRDC Media
Rural Management Strategies consultant Chris Minehan says using Yield Prophet and plant available water capacity mapping to manage nitrogen can be more profitable than applying a blanket rate... Recent research conducted by Rural Management Strategies in New South Wales has found that managing nitrogen separately across varying soil types using Yield Prophet and plant available water capacity (PAWC) mapping can be more profitable than applying a blanket rate of nitrogen due to savings in fertiliser costs... During the 2013 and 2014 winter cropping seasons, the Grains Research and Development Corporation (GRDC) funded trials at Barmedman to demonstrate the use of Yield Prophet and PAWC mapping to improve nitrogen decision-making in wheat and canola...
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Catalogue: GRDC Media
Rural Management Strategies consultant Chris Minehan says using Yield Prophet and plant available water capacity mapping to manage nitrogen can be more profitable than applying a blanket rate... Recent research conducted by Rural Management Strategies in New South Wales has found that managing nitrogen separately across varying soil types using Yield Prophet and plant available water capacity (PAWC) mapping can be more profitable than applying a blanket rate of nitrogen due to savings in fertiliser costs... During the 2013 and 2014 winter cropping seasons, the Grains Research and Development Corporation (GRDC) funded trials at Barmedman to demonstrate the use of Yield Prophet and PAWC mapping to improve nitrogen decision-making in wheat and canola...
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Catalogue: GRDC Media
Variable-rate application of some farm inputs offers northern region grain growers cost benefits and improved yields but simple on-farm trials are the key to local success... A new Grains Research and Development Corporation (GRDC) fact sheet outlines how, when and where to vary application rates of inputs such as seed, fertiliser, soil ameliorants such as lime or gypsum, desiccants and growth regulators... When considering variable-rate application, question whether variation exists...
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Catalogue: GRDC Media
With heightened interest among growers in using variable-rate application (VRA) to reduce input costs, it is recommended they first conduct on-farm trials to generate paddock data... "While data collected from farmer trials using yield mapping software will never be as accurate as small plot trials conducted by researchers, they are a simple and efficient way of gathering information about variation within paddocks," he said... "One way of being confident about yield differences observed in strip trials is to keep them simple: stick to one or two treatment differences and make the size difference between treatment rates large...
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Catalogue: GRDC Factsheets
MAKe vAriABLe-rATe APPLiCATiOn PAy variable-rate application (vrA) of some inputs delivers cost benefits and improved yields... soil remediation trial adds $232/ha over three years A variable rate gypsum trial on Nev Boland's southern This figure was obtained using a value of $100/tonne for Queensland property delivered positive results and confirmed gypsum, a wheat grain price of $210/tonne and a chickpea the value of soil remediation for long-term economic gain... Table 1 2010 Gross margin analysis results across paddock classes Paddock 'Go for 'Hold the High- Standard- Low-input class/ Gold' Gold' input input blanket zone blanket blanket approach approach approach Good High Standard High Standard Low Medium Standard Low High Standard Low Poor Low Low High Standard Low Gross $620/ha $656/ha $613/ha $630/ha $631/ha Margin page 4..
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Catalogue: GRDC Factsheets
MAKe vAriABLe-rATe APPLiCATiOn PAy variable-rate application (vrA) of some inputs delivers cost benefits and improved yields... soil remediation trial adds $232/ha over three years A variable rate gypsum trial on Nev Boland's southern This figure was obtained using a value of $100/tonne for Queensland property delivered positive results and confirmed gypsum, a wheat grain price of $210/tonne and a chickpea the value of soil remediation for long-term economic gain... Table 1 2010 Gross margin analysis results across paddock classes Paddock 'Go for 'Hold the High- Standard- Low-input class/ Gold' Gold' input input blanket zone blanket blanket approach approach approach Good High Standard High Standard Low Medium Standard Low High Standard Low Poor Low Low High Standard Low Gross $620/ha $656/ha $613/ha $630/ha $631/ha Margin page 4..
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Catalogue: GRDC Factsheets
MAKe vAriABLe-rATe APPLiCATiOn PAy variable-rate application (vrA) of some inputs delivers cost benefits and improved yields... soil remediation trial adds $232/ha over three years A variable rate gypsum trial on Nev Boland's southern This figure was obtained using a value of $100/tonne for Queensland property delivered positive results and confirmed gypsum, a wheat grain price of $210/tonne and a chickpea the value of soil remediation for long-term economic gain... Table 1 2010 Gross margin analysis results across paddock classes Paddock 'Go for 'Hold the High- Standard- Low-input class/ Gold' Gold' input input blanket zone blanket blanket approach approach approach Good High Standard High Standard Low Medium Standard Low High Standard Low Poor Low Low High Standard Low Gross $620/ha $656/ha $613/ha $630/ha $631/ha Margin page 4..
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Catalogue: GRDC Media
To improve their profitability and productivity, Scaddan growers Gavin and Elaine Egan pay keen attention to summer weed control and in recent seasons have introduced variable-rate technology (VRT) for application of inputs... In 2012, the Egans returned to a blanket rate in their fertiliser applications after a hailstorm at the end of 2011 wiped out most of their cereals, leaving little harvest data for the yield mapping on which VRT applications are based... Depending on the final results of on-farm gypsum and lime trials at Scaddan, the Egans will also consider using variable application rates of gypsum and lime tailored to different soil types...
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