From James Kennedy

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From James Kennedy
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How variable is the timing to maturity?
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How variable is the timing to maturity?
To some extent there is an innate timing to
maturation which is correlated with bloom.
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Can treatments effect this timing?
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ED berries reach Brix levels equal to the maximum
in control berries 12-13 days earlier.
ED berries reach anthocyanin levels equal to the
maximum in control berries 30 days earlier.
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Can treatments effect this timing?
Yes, but.
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Treatments can effect timing or quantity.
How does treatment timing effect fruit...?
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What is Wills ( Will Drayton ) window?
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Treatment effects are established quickly after
the onset of ripening.
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How does treatment timing effect fruit...?
Early (prever.) vs. late (postver.) water deficit
ED berries reach Brix levels equal to the maximum
in control berries 12-13 days earlier.
LD. 12-13 days earlier.
ED berries reach anthocyanin levels equal to the
maximum in control berries 30 days earlier.
LD. 17-18 days earlier.
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Early thinning produces increased fruit
uniformity.
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Early thinning produces more sensory differences
in the resulting wines.
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Treatment effects are established quickly after
the onset of ripening.
Early treatments appear to have a more profound
effect on fruit at maturity.
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How are the effects of early water deficit on
anthocyanin composition realized?
Increased anthocyanins were established/maintained
for almost 2 months after the release of water
deficit
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