Re: [IUFRO RG 7.02 FORPATH] orange stain in white pines

I have seen the orange wood in a local woodlot, and foresters refer to it as “pumpkin wood”. There is no apparent relation to infectious disease or tree health. The coloration just seems to be peculiar to white pine in certain stands and locations. Bill Livingston From: rg70200-forpath-bounces(a)lists.iufro.org [mailto:rg70200-forpath-bounces@lists.iufro.org ] On Behalf Of Marra, Robert Sent: Friday, April 20, 2012 1:45 PM To: rg70200-forpath(a)lists.iufro.org Subject: [IUFRO RG 7.02 FORPATH] orange stain in white pines Hello Forpathers, The following pictures were taken from recently felled white pines in a small area on water company property experiencing some severe dieback. This is a very dense stand, heavily overcrowded and large, maybe 60-80 years old, having obviously never had a thinning. So they’re stressed. But when I had one of the foresters fell a couple of trees so we could look for any signs of disease, we noticed this bright orange staining. I don’t have any reason to believe that this orange staining is the cause of the dieback, since it’s not common to all the trees that are dying, but it’s a curiosity worth inquiring about. The orange color was most strikingly vivid when the trees were first cut. Thanks, Bob <image001.jpg> <image002.jpg> <image003.jpg> Robert E. Marra, Ph.D. Forest Pathologist Department of Plant Pathology and Ecology Connecticut Agricultural Experiment Station 123 Huntington Street, P.O. Box 1106 New Haven CT 06504-1106 http://www.ct.gov/caes/cwp/view.asp?a=2812&q=394858 E-mail: robert.marra@ct.gov<mailto:robert.marra@ct.gov> Phone: (203) 974-8508 Fax: (203) 974-8502 Please consider the environment before printing this e-mail ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This information may be confidential and/or privileged. If you received this in error, please inform the sender and remove any record of this message. Note that messages to or from the State of Connecticut domain may be subject to Freedom of Information statutes and regulations. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________ IUFRO Mailing List To post a message to all list members, send email to: rg70200-forpath(a)lists.iufro.org List info and Archive: http://www.iufro.org/science/iufro-mailing-lists/overview/