Hugh, I figured you mean't Chateau. Chateau can only be applied pre-bud break (silver tip for apple) or by extension, presumably in the fall after harvest. Dave, Venue (Nichino) has a supplemental label specific for sucker "management" in pome and stone fruit. It works best when tank-mixed with another contact herbicide such as paraquat (Gramoxone) or glufosinate-ammonium (Rely). (Or glyphosate, but I know how much you love that stuff!) As always, avoid direct contact to the tree trunk, particularly young trees, with any contact herbicide to avoid long-term injury to the tree.
Jon On Thu, Jan 1, 2015 at 11:02 PM, Hugh Thomas <hughthoma...@gmail.com> wrote: > Hi everyone, > By mistake I made the comment that Chaparral was effective against apple > suckers, I should have said, "Chateau" is effective. Sorry about the > mix-up... > > On Thu, Jan 1, 2015 at 1:20 PM, Hugh Thomas <hughthoma...@gmail.com> > wrote: > >> David, >> My Chaparral label does mention apple. I don't have access to the label >> at the moment, but I will in a few days. This herbicide is also very >> effective in weed control in your strips. I now spray once with Chaparral >> and maybe once with roundup rather than 4-6 times with roundup. (per >> season) I'm sure if you contact Dow they will fill you in. I'll get a >> chance to read my label and get back to you in a few days. Also, >> consider Paraquat. This is a very effective material for sucker burn down. >> I think Paraquat is also labeled for apple. >> Hugh >> >> On Thu, Jan 1, 2015 at 12:05 PM, David A. Rosenberger <da...@cornell.edu> >> wrote: >> >>> Hello, Hugh — >>> >>> I was interested in your comment about controlling apple root suckers >>> with Chaparral herbicide because root suckers have become a major headache >>> in some of our older research plots. However, when I checked the Chaparral >>> label on the CDMS website, I can’t find any label that includes apples. Do >>> you have a special state label for apples, or were you thinking of a >>> different herbicide? >>> >>> The Chaparral labels that I found indicate that it is not registered >>> at all in NY (no big surprise), but I’m still curious about products that >>> might be used for chemical control of root suckers in other states. >>> However, given all of the warnings on the Chaparral label about long-term >>> residual effects, even in hay from treated fields, I’m wondering about >>> long-term side effects on apples even if it were labeled. >>> >>> On Jan 1, 2015, at 1:38 PM, Hugh Thomas <hughthoma...@gmail.com> wrote: >>> >>> Steven, >>> This is off point, but as an aside, I have found suckers (Bud 9) to >>> weaken when sprayed with the herbicide Chaparral. This is a pre emergent >>> but is labeled for suckers on apple. The effect is a severe weakening of >>> the sucker roots and they are very easy to pull a couple of weeks after the >>> spray. This is only anecdotal evidence and my personal experience. >>> >>> On Thu, Jan 1, 2015 at 7:49 AM, Steven Bibula <sbib...@maine.rr.com> >>> wrote: >>> >>>> Is there any information on the long term value of pre-planting >>>> sucker reduction? >>>> >>>> >>>> >>>> On some apple (and peach) rootstocks that arrive from the nursery, I >>>> have seen what appear to be cream-colored, corm-like ‘nodes’ at various >>>> locations on the roots themselves as well as the lower portions of the >>>> central portion; these all pop off relatively freely when wiggled. I have >>>> also seen suckers up to a few inches long as well. >>>> >>>> >>>> >>>> Are these nodes the origination points of future sucker growth, or just >>>> suckers that are already on their way? Do suckering rootstocks simply >>>> sucker from almost anywhere along their buried material, from dormant >>>> sucker buds scattered all over? >>>> >>>> >>>> >>>> For sucker control over the life of the planting, is there any benefit >>>> to manually removing these nodes and growing suckers? Or would that only >>>> reduce the suckering for the spring of the planting year? >>>> >>>> >>>> >>>> I am planning to plant a lot of heavily-suckering Bud 9 and B.9/MM.111, >>>> and if long term benefits of removing these nodes are worth the one-time >>>> effort before planting, then I will do the work. The hardest suckers to >>>> control are the ones right up next to the trunk, and any permanent sucker >>>> reduction would be nice on these heavily suckering rootstocks. >>>> >>>> >>>> >>>> I hope someone has done the research and is willing to educate ignorant >>>> folk such as I. >>>> >>>> >>>> >>>> Grateful in advance, >>>> >>>> >>>> >>>> Steven Bibula >>>> >>>> _______________________________________________ >>>> apple-crop mailing list >>>> apple-crop@virtualorchard.net >>>> http://virtualorchard.net/mailman/listinfo/apple-crop >>>> >>>> >>> _______________________________________________ >>> apple-crop mailing list >>> apple-crop@virtualorchard.net >>> http://virtualorchard.net/mailman/listinfo/apple-crop >>> >>> >>> >>> _______________________________________________ >>> apple-crop mailing list >>> apple-crop@virtualorchard.net >>> http://virtualorchard.net/mailman/listinfo/apple-crop >>> >>> >> > > _______________________________________________ > apple-crop mailing list > apple-crop@virtualorchard.net > 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
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