ALTERING TAPROOT ARCHITECTURE OF BLACK TUPELO (NYSSA SYLVATICA) TO A MORE FIBROUS ROOT SYSTEM
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Transcript of ALTERING TAPROOT ARCHITECTURE OF BLACK TUPELO (NYSSA SYLVATICA) TO A MORE FIBROUS ROOT SYSTEM
ALTERING TAPROOT ARCHITECTURE OF BLACK TUPELO (NYSSA SYLVATICA) TO
A MORE FIBROUS ROOT SYSTEM
Jimmy Klick, M.S. - Urban Forestry
Advisor: Dr. David J. Williams
Research Introduction
Objective
Research Introduction
Air-root pruning Small Containers
Research Introduction
Air-root pruning Small Containers Medium Containers
Research Introduction
Air-root pruning Small Containers Medium Containers
Auxin (K-IBA) 0 mg/L 1875 mg/L 3750 mg/L 7500 mg/L
Data Collected
1
3
Root Rating
Density Mass Coarse roots Circling roots Dead roots
Ordinal Logistic Model
Root Rating Why?
Ordinal values No transformation Determines likelihood of something occurring
How does it work? Odds Ratio
Determines how different one treatment is from another
Confidence intervals
Results: Root Rating Small Containerscd ab de de bc a bc ef f
Root Structure (Visual observations)
Fabric Container Plant Band Container
Results: Root Rating Medium Containers
b b
aa
Results: Auxin Root Rating a
Survival Rate
0 mg/L: 40% 1875 mg/L: 75% * 3750 mg/L: 65% * 7500 mg/L: 70% *
* significant difference (P = 0.025)
Conclusions
Small air-root pruning containers Black fabric and Plant Band
Medium air-root pruning containers Black fabric and green mesh
Auxin dips Transplant survivability
Future Studies
Media Transplant Auxin Ordinal Logistics Model
Acknowledgements
Advisor: Dr. David J. Williams Committee: Dr. Gary J. Kling and Dr. Jeffrey O.
Dawson Joseph Castro and Massimo Bionaz for help with
statistical analysis IR-4 Program for funding my research assistantship High Caliper Growing Systems, Lacebark Inc.,
Nursery Supplies Inc. for providing containers