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Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
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Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
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Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
Related categories:
Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
Related categories:
Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
Related categories:
Catalogue: GRDC Factsheets
Key pointS Auto boom height can help to maintain correct nozzle height above the target, which improves the evenness of the spray deposit and reduces spray drift through excessive boom height... electronic auto boom height controllers require regular calibration and may not be suited to all boom designs... Hydraulic (using load sensors): These systems also utilise a wheel with suspension mounted to the boom the wheel is used in conjunction with a hydraulic load sensor and lift ram that can adjust the boom height...
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Catalogue: GRDC Final Reports
Validations on plot trials produced an R 2 of 0.97 between simulated and measured plant N (g N m -2 )... Fitzgerald et al. 2010 reported a correlation with an R 2 = 0.97 between predicted and measured total plant N (g N m -2 ) based on relating the CCCI to the Canopy Nitrogen Index (CNI) - an index that relates biomass to plant N. This relationship was validated with additional plot level data from Australia and Italy, resulting in an R 2 of 0.97 of predicted with measured plant N (g N m -2 ) and an RMSE of 0.2 g N m -2 as reported in Cammarano et al. 2011b... In the short term, there is a need for a workshop to fully identify the knowledge gaps, and develop a plan for research leading to new capabilities and deliverables to growers and consultants...
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Catalogue: Ground Cover
Dr Mayfield, who is trialling the NSensor for the Southern Precision Agriculture Association (SPAA) in conjunction with the Hart (SA) Field Days Group and others in projects supported by the GRDC, says the technology does not measure how much fertiliser (nitrogen) needs to be applied, it simply identifies areas where extra nitrogen would benefit growers" yield and protein aims... Dr Mayfield describes the N-Sensor as a diagnostic tool, not something that replaces good agronomic advice and decision making: "Growers still need to know the underlying reasons for variations in crop growth and yield through soil and/or tissue testing... Mr Heath, who first learned about the N-Sensor during his scholarship prize trip to Europe, describes the N-Sensor as something that looks like an oversized spoiler mounted on a tractor or other vehicle, and fitted with optical sensors that establish normalised digitalised vegetation indices (NDVI)...
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Catalogue: Ground Cover
The diversity of the GRDC's investments in precision technology was on display at teh 16th Symposium on Precision Agriculture in Australasia... The comment by Dr Brett Whelan, from the Precision Agriculture Laboratory (PA Lab) at the University of Sydney, in his welcoming address was reflected often in presentations at the recent 16th Symposium on Precision Agriculture in Australasia, held in Perth... Luke Dawson, from CSBP, reported on work with the Liebe Group that has shown an economic benefit from zoning paddocks by potential yield and managing inputs ...
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Catalogue: GRDC Research Summaries
The project will deliver validated indices derived from remote sensing that can spatially measure and map canopy-level crop nitrogen (N) status within rainfed wheat systems... Remote sensing (spectral and thermal) combined with crop models can provide maps showing chronic and acute water stress areas that can guide N management strategies within the context of potential for response to targeted N inputs... Results from trials in Australia and Italy show ability to relate remote sensing measurements at the plot scale to plant N, based on remote sensing of the canopy and biomass measurements...
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