Re: [apple-crop] Bitter pit? Stink bug?
Picture is a bit atypical of stink bug. Typical is heavier marking near stem. Many pencil eraser sized marks, seldom with big sunken areas, seldom with the 'colorful' marking that two fruits. Drought mark, bitter pit, thinning/tractor/ladder/wind bruises all have a grey/beige/brown/black layer of flesh under the mark. Stinkbug have a white flesh mark, somewhat dry 'cottony' texture to the flesh under the mark. Heavy stinkbug damage resembles severe bitterpit damage but with higher number of marks on the stem end, lighter pressure often has most of the marks near the stem end, rather than calyx. Tom and Rose Auvil PO Box 408 Orondo, WA 98843 tau...@nwi.net -Original Message- From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Jon Clements Sent: Monday, October 07, 2013 12:19 PM To: Apple-Crop Subject: [apple-crop] Bitter pit? Stink bug? See attached... ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Bitter pit? Stink bug?
Hail injury from at storm in early to mid-season? What are the internal symptoms when cut perpendicularly through the lesions? On Oct 7, 2013, at 3:18 PM, Jon Clements jmcext...@gmail.com wrote: See attached... photo.JPG 413-478-7219___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ** Dave Rosenberger, Professor of Plant Pathology Cornell University's Hudson Valley Lab P.O. Box 727, Highland, NY 12528 Office: 845-691-7231 Fax:845-691-2719 Cell: 845-594-3060 http://www.nysaes.cornell.edu/pp/faculty/rosenberger/ ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Bitter pit? Stink bug?
Looks mostly like stink bug. Need to look at a cut straight into the fruit through the injury. Stink bug injury will be deep and have the stylet marks, maybe whitish to drying. Dean *** Dean Polk, p...@aesop.rutgers.edu Professor and Statewide Fruit IPM Agent, Rutgers Cooperative Extension, NJAES Cell: (609) 902-1134 PE Marucci Center for Blueberry Cranberry Research Extension 125A Lake Oswego Rd, Chatsworth, NJ 08019-2006 Phone: (609)726-1590 ext 4442, Fax: (609)726-1593 Rutgers Fruit Ornamental Research Extension Center 283 Rt 539, Cream Ridge, NJ 08514-9634 Phone: (609)758-7311, Fax: (609)758-7085 -Original Message- From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Jon Clements Sent: Monday, October 07, 2013 3:19 PM To: Apple-Crop Subject: [apple-crop] Bitter pit? Stink bug? See attached... ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Bitter pit? Stink bug?
Hi Jon: the sunken dark green spots are definitely cork spots. Peel the fruit and you will see a brown corky area. Bitter pit usually does not go deep and the spots are mostly black. I am not sure of the brown spots. They look different from cork. The reason I say that is that the brown spot next to the cork towards the stem end of the second fruit from the left look are different. Bitter pit is primarily a calcium deficiency disorder, while cork is a boron plus calcium deficiency symptom . Cork starts to show up when the fruits are about the size of a dime, while bitter pit, occurs mostly in storage and the spots are much smaller than cork (size of a pin) and they are shallower (one millimeter or less around the skin). Two pounds/acre of boron along with 6 to 8 pounds of calcium chloride at petal fall or first cover should take care of the problem.. I have seen a lot of cork on Honeycrisp, Winecrisp and Crimson crisp. Nothing to do with the crisp.. Mosbah Kushad, University of Illinois -Original Message- From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Jon Clements Sent: Monday, October 07, 2013 2:19 PM To: Apple-Crop Subject: [apple-crop] Bitter pit? Stink bug? See attached... ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Bitter pit? Stink bug?
For those of you who want to know more about boron function in the plant. Boron is an essential nutrient in vascular plants; it is located mostly in the cell wall forming a borate ester cross-linked rhamnogalacturonan II dimmer, which is an essential component of the structure and function of the cell wall. Its role in maintaining the integrity of the cell wall explains the collapse of the cells and the sunken area of the fruit from its deficiency.. Mosbah Kushad University of Illinois ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Bitter pit? Stink bug?
A little more info, I have been struggling for awhile now to attempt to identify similar symptoms. We do of course have brown and green stink bug here, and apparently increasing signs of BMSB activity. (But not necessarily in orchard.) I have been told that bitter pit is typically more superficial and shallow under the skin. On Honeycrisp, greenish sunken spots have fairly deep brownish flesh discoloration below the spots. I have some pictures of that too: http://www.flickr.com/photos/jmcextman/sets/72157636328915735/ The previously attached pictures of the yellow apple are a numbered selection, that I could have sworn was relatively clean just a few weeks ago and now I am seeing this show up. (Dave R., there was some hail here earlier (like June/July), but that damage was pretty easily identified earlier and that does not appear to be the cause of this.) I would presume that with some sort of microscope the best way to confirm stink bug or not would be to look for a puncture hole? Yes, no? I will slice some fruit later and send picts of that to the list. Thanks all for your feedback. Jon On Tue, Oct 8, 2013 at 10:53 AM, David A. Rosenberger da...@cornell.eduwrote: Hail injury from at storm in early to mid-season? What are the internal symptoms when cut perpendicularly through the lesions? On Oct 7, 2013, at 3:18 PM, Jon Clements jmcext...@gmail.com wrote: See attached... photo.JPG 413-478-7219___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ** Dave Rosenberger, Professor of Plant Pathology Cornell University's Hudson Valley Lab P.O. Box 727, Highland, NY 12528 Office: 845-691-7231 Fax:845-691-2719 Cell: 845-594-3060 http://www.nysaes.cornell.edu/pp/faculty/rosenberger/ ___ 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 ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
