Richard, I do get similar cracking on my Karmijn from time to time, but not with too much severity, so I never went into it too carefully. It is clearly year-dependant, but why is a more difficult issue. I have not associated the problem with cold post blossom weather, as we often get that, but perhaps it is a factor. I think wet summer weather may play a part also. I do feel that the trees with a lighter set are more prone, as are trees that don't get a program on GA4+7 for russet reduction. However, the crop load on trees getting the GA treatment is usually higher than that on trees which do not get it, so whether it is an indirect or direct effect of the GA is difficult to guess. I do also feel that there are some trees that seem more prone year-on-year than others. Is this clonal variation, or a rootstock effect, or could there be a contributing latent virus, either in the rootstock or scion? As you can see, I am contributing no answers to your question; only more questions. However, I do think that treating the tree in such a way to maximise crop load (which is seldom too heavy on Karmijn) reduces the problem. By the way, I was intrigued to read that Derry's Karmijn are under cover. I would love to hear more about this. Con Traas The Apple Farm Ireland
-----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] Behalf Of Richard J. Ossolinski Sent: 27 July 2007 12:36 To: Apple-Crop Subject: Re: Apple-Crop: Fruit cracking/splitting Thanks for the response, Derry, though the mystery remains unresolved, as, FWIW, we had no unusually cold weather here just after bloom. Fun, though, ain't it? Richard On Jul 27, 2007, at 1:33 AM, derry&bill wrote: > Richatrd, > > I've had the same cracks in my russeted apples : Golden Russet, St > Edmunds Pippin and Roxbury Russet. > > I think this cracking is different from the cracking seen on Cox's > Orange which usually is circular around the calyx and usually appears > later in the season. > > I sometimes see the circular cracking in Karmijns and I associate it > with the Cox's Orange parentage. > > I spoke to Ed Fackler about this a few years ago. In particular I was > discussing Hudson's Golden Gem another russeted apple. > > Ed thought the cracking was associated with cold weather just after > bloom i.e. as the young apple was developing. > > I do not have cracking in my Karmijns but my Karmijns are all under > cover so they are somewhat protected from the cold temps after > pollination. My russeted apples are in the open. > > Richard, in a separate email, I will attach some jpgs of cracked > russeted apples. I don't have cracks in any other apples. > I noticed the cracks in early July, but I'm sure the cracks were there > from at least early June. > > I have temporarily misplaced my pollination chart for 2007, but it was > approximately to the first ten days in May. > > Derry Walsh > South Coastal B.C. > http://derrysorchardandnursery.ca > > > > > Richard J. Ossolinski wrote: >> Anyone have a clue as to what causes this splitting/cracking? >> (Thanks to Glen Koehler at UMO for creating this link) >>> http://pmo.umext.maine.edu/apple/nosearch/cracked-apples-Oz.htm > > > ----------------------------------------------------------------------- > ---- > > > The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard > <http://www.virtualorchard.net> and managed by Win Cowgill and Jon > Clements <[EMAIL PROTECTED]>. > > Apple-Crop is not moderated. Therefore, the statements do not > represent "official" opinions and the Virtual Orchard takes no > responsibility for the content. > > > > > --------------------------------------------------------------------------- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard <http://www.virtualorchard.net> and managed by Win Cowgill and Jon Clements <[EMAIL PROTECTED]>. Apple-Crop is not moderated. Therefore, the statements do not represent "official" opinions and the Virtual Orchard takes no responsibility for the content. --------------------------------------------------------------------------- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard <http://www.virtualorchard.net> and managed by Win Cowgill and Jon Clements <[EMAIL PROTECTED]>. Apple-Crop is not moderated. Therefore, the statements do not represent "official" opinions and the Virtual Orchard takes no responsibility for the content.
