what is precision viticulture by richard hamilton
TRANSCRIPT
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• Vineyards are inherently variable
• Many tools are available to quantify
variability – Yield monitors
– Remote sensing
– Digital Elevation model
– EM38, GPR etc.
• Application of any of these tools enables
the first steps in Precision Viticulture
• Enables development of informed
management zones
Vineyard Variability
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1998 - Weighing Gondola
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1998 First “Yield map”
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On the go yield monitoring
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Be aware of colour-blind people – 12% of males
Beware - Colour-blind males
12.5% with discrimination
difficulty
= 6.25% of population
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First evaluations of yield monitoring
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Coonawarra management zones – 3 groups
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Zones Hypothetical
Zones Hypothetical 6 tonnes is target for “quality”
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Applying Precision Viticulture
• Exploitation of management zones
• Split picking
– Single pass with multiple bins
– Separate passes according to ripeness
• Differential management
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Zoning the vineyard
• Data layers aid the process
• Yield monitors demonstrated
applicability
• What else can we use
– Remote sensing / Aerial photography
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Padthaway Shiraz
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Padthaway Shiraz
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Padthaway Shiraz
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Padthaway Shiraz
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Remote Sensing
– “poor person’s” yield monitor?
• Strong relationships between yield
and spectral data
• Ground truthing is critical to determine
causes of variability
– Soil pits
– Other data layers
– Irrigation blockage / blowouts etc
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Coonawarra PCD and EM38
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Limestone Coast - Greenseeker and Eutypa
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Other datasets – an example
• Project to optimise the placement of
frost fans at our Robe vineyard
– Use of Digital elevation model data (+/- 2
cms)
– Overlay of other data sets
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Robe vineyard frost damage 2006
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Robe – contours and flows
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Fan placements
Plant Cell Density
Natural colour remote sensing data
acquired at 0.5m resolution
Plant Cell Density
Low
Medium
High
Vineyard variability
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Koonunga Hill – 30ha
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Vinehealth Australia – Outbreak scenario
Barossa Valley GI
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Exploiting split picking
