[Apple-Crop] Cork spots in Honeycrisp

[Kushad, Mosbah M]

To the membership:
I have seen more cork spots symptoms on Honeycrisp during the last two years than I have seen it at any other time or on any other variety.  I will be very grateful if you can help me  determine the extent of the problem in other areas by answering the following questions: Please do not post your answers to the group.. Send it to my e.mail address below and I will send a summary to the group without names.


1.      How many sprays of boron have you applied this season?

2.      What was the boron rate and when did you apply it? Before petal fall, at petal fall, one week after petal fall, two weeks after petal fall.

3.      How many sprays of calcium have you applied this season? what was the rate and when did you apply the first calcium spray?

4.      What is  your soil pH if you know it?

5.      Have you run leaf analysis this season? What were the boron and calcium concentrations?

6.      What percent of your crop do you estimate have cork spots?

Thank you for your help..

Sincerely, Mosbah


Mosbah M. Kushad
Horticulture Postharvest Physiologist
1109 Plant Sciences Laboratory
1201 South Dorner Drive
University of Illinois
Urbana, Illinois 61801
Phone (217)244-5691
e.mail:  kushad at illinois.edu

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