Ins and Outs of Lime Incorporation in the West Midlands Stephen Davies, Chris Gazey, Anne Wilkins,...
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Transcript of Ins and Outs of Lime Incorporation in the West Midlands Stephen Davies, Chris Gazey, Anne Wilkins,...
Ins and Outs of Lime Incorporation in the West MidlandsStephen Davies, Chris Gazey, Anne Wilkins, Dave Gartner
Precision SoilTech
Bindi Bindi, Barley response 2014
1.06 t/ha 1.78 t/ha
Nil lime 1996Nil lime 1996
1.5 t/ha 2005 injected 2 t/ha lime 1996
2.00 t/ha
Data: C. Gazey; AgLime; Precision SoilTech
Incorporation or more Lime?
Esperance Downs Research Station – Repellent Duplex
D. Hall, DAFWA
2013 Badgingarra sandy gravel
Badgingarra sandy gravel
Topsoil pH less than 5.0 Subsoil pH = 4.8 or higher
Wheat grain yield 2013 season
Also:• Grain yield MBP 11%• Grain yield MBP + Lime 18%• Grain protein 1-1.5% higher• Screenings 0.5-1.0% lower• Kernel weight 1-3 mg heavier
Treatments applied once only in 2007
Barley grain yield 2014 season
Whole site deep ripped 2014
Grain yield response:• MBP or Lime 12% • MBP & Lime 38%• Paddock average 3.1 t/ha
Subsoiltarget
Topsoiltarget
• Limed once in 2007• 2 t/ha limesand• Knife point seeder 7-inch
row spacing, working 6-inches deep
Soil pH 2014
Ryegrass biomass 2014
Ryegrass biomass change:• Surface Lime 54%• Mouldboard plough 36%• MBP + Lime 75%
Openers on ripper tines
Incorporation depth = 20-26 cm
Wings on ripper tines
Incorporation depth = 20-25 cm
Grizzly deep digger
Incorporation depth = 20-25 cm
Grizzly offsets vs Spader
OFFSETS
Depth = 24-25 cm
SPADER
Depth = 28-35 cm
Modified blade plough
Incorporation Depth = 20-23 cm
Incorporation depth of other options
Regular deep ripping, standard offsets = 10-15 cm
Supporting your success
Modified One-way plough
Untreated = 6.6OWP = 3.3
MED
1) Know your pH profile to depth
2) Have a strategy top apply enough lime to fix & maintain the
pH profile
3) Assess whether the soil will be responsive to cultivation
4) Other constraints - water repellence, compaction, weeds?
5) Undecided about incorporation method? – keep liming!
6) Variable rate apply lime to major soil types if warranted
Incorporation or More Lime?
Fix the top… Line things up… Fix the bottom
GRDC Projects
DAW00204 & 244 Soil water repellence
DAW00236 Soil acidity
COGGO Project: Developing and testing innovative, practical and reliable methods for incorporating lime into acidic sandplain subsoils – West Midlands Group
NACC Projects: Demonstrating innovative practices for the amelioration of sub surface Acidity to improve soil health; 1412-05-01
Thanks to: Peter Negus; David Paish, Glen Riethmuller, Travis Hollins
Precision SoilTech