what have we learned from hurricane irma? - sepga
TRANSCRIPT
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What Have We Learned From Hurricane Irma?
Lenny Wells UGA Horticulture
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Early estimate = 30% damage
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Uprooting• Trees trained to
central leader generally suffer less damage
• Large, spreading trees most vulnerable
• Upright, open canopies= less wind resistance
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• 15-40 yr old range most susceptible
• Young (1-5 yr.) trees generally have more flexibility and less wind resistance
• 50-70 yr old trees have enough bulk and anchorage (up to a point)*
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Righting Trees• In general if lean is
45 degrees or more, better off to cut down
• Trees 10” in diameter or less have more success
• Unpredictable, but trees with broken roots rarely as productive or vigorous
• PRUNE CANOPY!
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Correcting Planting Depth Problems/Slightly Leaning Trees
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Limb Breakage• Narrow angles=
broken limbs or trunks
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Hedging and Wind
60% Reduction in wind damage
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Damage to Fruit
• Nuts blown from trees
• Shucks damaged by wind
• High % B grades
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IRMA
• Est. 30% damage• Final 2017 GA
pecan crop numbers approx. 110,000,000 lbs