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 > >
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