[Apple-Crop] satiny vs papery skin

[Kushad, Mosbah M]

Hi Kevin:   The oblong-shape of Washington State 'Red Delicious' was the main reason (if not the only one) for its popularity worldwide, but 'Honeycrisp' and 'Gala' have opened the customers' eyes to taste and crispiness.  I hope you are having a great season.. It seems that it has been great for most... 

Mosbah 

-----Original Message-----
From: apple-crop [mailto:apple-crop-bounces at virtualorchard.com] On Behalf Of kuffelcreek at kuffelcreek.com
Sent: Friday, October 06, 2017 10:08 AM
To: Apple-Crop discussion list <apple-crop at virtualorchard.com>
Subject: Re: [Apple-Crop] satiny vs papery skin

Mosbah's comment rings true here in our hot dry climate of So. Calif.; our Liberty apples look like they've been stepped on, almost to the point of a donut peach. They still fatten up girth wise, but I've always thought it was something to do with irrigation.  Thanks for solving a mystery.

Kevin Hauser
Kuffel Creek Apple Nursery
Riverside, California


 On Fri, 6 Oct 2017 14:35:04 +0000, "Kushad, Mosbah M"
<kushad at illinois.edu>
wrote:
> Brian :  Fruit shape and color are affected by growing climate/region..
> Red Delicious fruits grown in warmer climate are likely to be round or
flat
> while those in northern regions tend to be oblong (so called type or 
> is
it
> typy like shiny).  I recall from memory that an extension publication 
> showed that apples from North Carolina were more round and flat while
those
> from either NY or Washington? were oblong.  This is likely to be
regulated
> by hormones since you can make fruits more oblong shape with Promalin
(GA4
> +GA7 + 6-BA).   Skin finish is also affected by humidity and
temperature.
> High humidity and high temperature tend to make fruit color more dull
while
> low humidity and cooler daytime temperature tend to make fruit color
more
> shiny with smoother finish.
> 
> Mosbah Kushad, University of Illinois
> 
> From: apple-crop [mailto:apple-crop-bounces at virtualorchard.com] On
Behalf
> Of Brian Alan Caldwell
> Sent: Friday, October 06, 2017 7:34 AM
> To: Apple-Crop discussion list <apple-crop at virtualorchard.com>
> Subject: [Apple-Crop] satiny vs papery skin
> 
> I have two orchard locations, one in a valley and a nearby one on a 
> hilltop.  I'm mystified by a "dry skin" quality in the valley farm.
> I graded Liberty apples last night and the differences between the two 
> sites were dramatic.  Hilltop-smooth, satiny finish; dark color; long
"red
> delicious" shape.  Valley-shiny finish; bright color; spherical shape. 
> Jonagolds and Idareds from the valley have an almost papery skin; much 
> smoother/waxier from the hilltop.
> I've seen this in past years too...
> Any ideas as to what is going on?
> 
> 
> Brian Caldwell
> Hemlock Grove Farm
> West Danby, NY
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