He had asked me via email somehow to contact him and I forgot. He wanted to know when my trees went for sale. I think he got mad at me but man, I have too much to keep track of. I have no idea who many of the people in my email contacts are until I look thru them years later to thin the herd, each time.
I’ve been doing math all day looking at possible hybrid combinations-still. Thanks Tony! btw, I’m still convinced I got the right combination, the first time, a few days ago. I haven’t found anything better. This breeding combination of cultivars we’re going to be using is the right amount of percentage.
@Lena – It would seem that way, based on the report. As a note of caution, I’d point out that the report classifies “Triumf” and “Sharon” as PCNA, but we know that they are not.
My Rosseyanka has two problems for which I would like to find names and solutions for. They seem to be independent of each other.
The two on the left in the picture show a skin-deep dry blackened area covering the blossom end. A moderate amount is only cosmetic, but when the area gets large it can start rotting or molding sooner that the rest of the fruit. Just about every fruit has this to some degree, more or less.
The cut fruit on the right shows a hollow core with black mold. The flesh tastes good unless you happen to get a bit of that mold, then it tastes moldy. Maybe about 1 out of 5 fruits will have this.
These fruits have been in cold storage for a few weeks, but these two conditions existed already before picking.
I’m guessing the blossom end problems are from micronutrient deficiency. Try getting some fertilizer with micronutrients for next spring. Also, check the soil PH and if it is low add some form of calcium.
I also have Nikita’s Gift. It had some of the blackened skin, but not near as much. Also, I don’t remember seeing any of the moldy hollow interiors with them.
I have a full native D.v. (Yates) that did not show either symptom, but they were ripening much earlier during hot weather and would drop from the tree promptly when they ripened and only keep a short time before spoiling by regular rotting throughout. (The only reason I picked the Rosseyanka and put them into cold storage was because the birds were eating them in the tree)
@atheist – Thanks, that’s a helpful clarification. The production of non-astringent kaki PCNA x PCNA crosses is, of course, not surprising. The Japanese and Koreans have produced lots of such crosses, and no doubt it happens in nature all the time.
On a separate topic, can you shed any light on the reported non-astringency of Gora Roman Kosh? Is the non-astringency reliable – repeatable year after year, consistent across growers, and robust across various growing conditions? Is there any possible foundation in the presumed genetics?
I have no pollinator, neither hybrid virginiana nor kaki with male flowers.
so I apologize for the stupid question.
could it be possible that they were pollinated and the seeds were rejected and rotted internally?
Not a stupid question, but the internal problem does not seem to correspond to a seed, or a former seed. It is a thin film coating the interior surface of the central hollow space. Seeds, if any, would radiate like a wheel spoke outward from center, and would thus be off center. I get very few seeds; maybe only one seed for every three fruits; and even then, most are flat poorly developed ones; but never partly rotted.
I don’t know how long it will take on the little trees, on the larger bark grafts you should start getting Persimmons on year 2 -3.
Prok fruited for me on year 2 a couple others on year 3.
Full Sun is your friend. Still waiting on the ones I did in the shade and smaller diameter trees.
On some of those trees in the edge of my field (2-3" diameter)… they are not getting much sun now but do fruit. I am going to clear around them so they get more sun.
The smaller ones out in my field… that I selected (like the one pictured) are all in full sun. Hopefully they grow fast.
The original JT-02 cross of: (D.v. Josephine x D.k. Taishu) resulted in (6) trees in the United states. (4) are alive today:
JT-02 = hardy to at least -22 F and fruits then. McKee, KY. USA. Has experienced -26 F in Omaha, NE. and had cambial damage. Has come back above the graft after -33 F Aledo, IL. USA to make a new tree. The rest of the tree was killed except for 2" above the graft on (2 of 2 trees in Illinois, USA.) Will have cambium damage at -25 F which means that either a year or two later the tree will recover from it and return to bright green cambium healthiness vs. brown/dark-green cambial color at winter damage temps.
JBT-06 - hardy to at least -22 F and fruits then. Mckee, KY. USA
NB-21 = Sestronka. Hardy to 0 F. Same as kaki hardiness.
NB-02 = Zima Khurma. Hardy to -16.4 F that we know currently at McKee, KY. USA
