My 2 cents. I wouldn’t be that confident on effect of reduce nitrogen on lowering size fruit. In our trials, with very good soil conditions, and good climate (well... usually), leading to nitrogen release from the soil, and nitrogen storage in wooden tissues : - We get a very slow impact of reducing nitrogen levels let’s say about 5 years to notice a measurable effect. - In the 6-7 years range, we see a reduced fruit set, a better effect of thinning agent which means less fruit and as you imagine, better fruit size.
Of course in skeletics soils with low levels of organic matter it could be different. Jean Marc Jourdain CTIFL De : apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] De la part de Jon Clements Envoyé : dimanche 10 janvier 2016 23:57 À : Apple-crop discussion list Objet : Re: [apple-crop] apple size Root pruning: YES Withhold nitrogen: YES Minimize dormant pruning, do some summer pruning (but don't remove fruit): YES Use Apogee: YES Over-crop: YES maybe, but use NAA and/or Ethrel to promote return bloom development Use B.9 rootstock (as opposed to M.9): YES Make sure you have enough variety to pollinate: YES I found Morren's Jonagored Supra (Willow Drive) grown on B.9 rootstock to be a very nice Jonagold strain. Good crops without too many large fruit. Still have to watch biennial bearing. I would plant that strain in a heartbeat if I want Jonagold. Did you hear New England Apple Association is going to brand Jonagold apples grown in New England? Not sure, however, what they are calling it? Any other ideas out there? Jon On Sat, Jan 9, 2016 at 10:18 PM, Hugh Thomas <hughthoma...@gmail.com<mailto:hughthoma...@gmail.com>> wrote: I've always wondered about root pruning with a deep running and large disk. Just a thought... On Sat, Jan 9, 2016 at 11:48 AM, David Kollas <kol...@frontier.com<mailto:kol...@frontier.com>> wrote: Art: I don’t know whence the observations or measurements have come, but I saw a rootstock comparison in which G202 was said to produce “smaller fruit size.” For the reason you mention, I hope this is true, and of more than just statistical significance. I suspect that if it were a practical difference, we would have heard more about it. David Kollas Kollas Orchard, Connecticut On Jan 9, 2016, at 12:01 PM, Arthur Kelly <kellyorcha...@gmail.com<mailto:kellyorcha...@gmail.com>> wrote: > Any suggestions out there for how to reduce fruit size without getting into > biennial bearing as in not thinning? Some varieties (Jonagold) would be more > marketable if they were 2.75 - 3.0" instead of all more than 3.0". > > -- > Art Kelly > Kelly Orchards > Acton, ME > _______________________________________________ > apple-crop mailing list > firstname.lastname@example.org<mailto:email@example.com> > http://virtualorchard.net/mailman/listinfo/apple-crop _______________________________________________ apple-crop mailing list firstname.lastname@example.org<mailto:email@example.com> http://virtualorchard.net/mailman/listinfo/apple-crop _______________________________________________ apple-crop mailing list firstname.lastname@example.org<mailto:email@example.com> http://virtualorchard.net/mailman/listinfo/apple-crop -- Jon Clements aka 'Mr Honeycrisp' UMass Cold Spring Orchard 393 Sabin St. Belchertown, MA 01007 413-478-7219 umassfruit.com<http://umassfruit.com>
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