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Variable rate liming
for acidity
14,000,000 ha in WA (crop lands)
20,000,000 ha in NSW (ag lands)
To raise the pH of all soils in
Australia to 5.5, need to apply a
66 million tonnes of lime
Confident lime decisions
Right rate / Right Place
Increased production
1237ha
80% lime saving
$140,000
36ha waterlogging (140ha Block)
2010 Canola $52,000 loss
5ha waterlogging (4% of area)
2011 Wheat $42,000 gain
• Elevation data from
GPS machinery
• Review against yield
or satellite imagery
• Re-design paddock
• Send drainage lines
to machine
• Contractor installs
drains
Denitrification
(Nitrous oxide)
• Light soil, good
cotton crop
210kg Nitrogen
remaining
• Heavy soil, poor
cotton crop
72kg Nitrogen
remaining
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