Paleoproterozoic crust-formation and reworking events in the ...
Reworking challenges and rootstock compatibility...1 12/12/2017 2 years 6 months 18 months ARC...
Transcript of Reworking challenges and rootstock compatibility...1 12/12/2017 2 years 6 months 18 months ARC...
12/12/2017
Reworking challenges and rootstock compatibility
NSW DPI citrus roadshow, October 2017
G. Sanderson, D. Monks, T. Witte and A. Creek NSW DPI & K. Lacey Dept. Primary Industries and Regional Development
Reworking - key factors to consider Rootstock and interstock
Herbicides
Tree age
Tree health and scion wood
Painting (sunburn)
After-care
- Bag opening
- Graft management
- De-suckering
- Nurse limb removal
Costs
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2 years
6 months
18 months
ARC Nadorcott SL
20162014
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2015
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Re-grafting top-worked trees Buddy tape wrapped graft stick
4 weeks
6 weeks
15 weeks
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Other top-working methods
Chip bud into regrowth Patch bud - Spain
Reworking to Orri, Spain (March 2017)
Bordeaux (copper) paint
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Orri mandarin de-suckering (Dareton)
Selecting a rootstock requires:
Knowledge of the site conditions.
Knowledge of the rootstocks limitations and compatibilities.
An understanding of how rootstocks influence the horticultural performance of different cultivars.
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Scion Incompatibility
Can be highly specific.
Several visual symptoms.
Becomes obvious as early as <3 years of age or as late as 8-12 years or more.
Rootstock ‘suckering’
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Navelina on Swingle
Yellow ring
Amigo mandarin on citrange rootstock
Decline at year 18 from planting
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2011
2012
2014
Imperial mandarin
Troyer citrange
Daisy mandarin on Swingle, Bindoon WA
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Afourer (Nadorcott) mandarin on Swingle, Spain
19 year old
Eureka seedless lemon
Cox Benton citrange Cox
Gin Gin, WA 2012
Dareton, NSW 2016
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Interstocks
Eureka lemon/Clymenia/Troyer Imperial/Valencia/Troyer
Interstock – Double bud
1. Valencia
2. Variety
Rootstock
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