<div dir="auto"><div>Hi Mosbah,</div><div dir="auto"><br></div><div dir="auto">Thank you for your reply and for the link.</div><div dir="auto"><br></div><div dir="auto">Just got some pictures of the foliar damage: on most (but not all) trees affected, the honeydew causes the leaves to become very dark brown before they dry off and fall. Some trees have been completely "defoliated".</div><div dir="auto"><br></div><div dir="auto">However, unless we need to use a magnifying glass, we do not see psylle in any form (egg, nymph, or adult). The honeydew "seems" to come out of the buds but we could be wrong.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto">Mo<br><div class="gmail_extra" dir="auto"><br><div class="gmail_quote">On Sep 18, 2017 10:48 PM, "Kushad, Mosbah M" <<a href="mailto:kushad@illinois.edu">kushad@illinois.edu</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Do you see a lot of russeted fruits with dark spots? PP nymphs produce the honeydew that drips on the fruit surface causing the russet.. Washington State University
has a very nice factsheet.. Here is the link.. <a href="http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=120" target="_blank">http://jenny.tfrec.wsu.edu/<wbr>opm/displaySpecies.php?pn=120</a>.<wbr>.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Mosbah Kushad, University of Illinois …<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> apple-crop [mailto:<a href="mailto:apple-crop-bounces@virtualorchard.com" target="_blank">apple-crop-bounces@<wbr>virtualorchard.com</a>]
<b>On Behalf Of </b>Mohamed Merigh<br>
<b>Sent:</b> Monday, September 18, 2017 3:36 PM<br>
<b>To:</b> <a href="mailto:apple-crop@virtualorchard.com" target="_blank">apple-crop@virtualorchard.com</a><br>
<b>Subject:</b> [Apple-Crop] Problem with pear trees<u></u><u></u></span></p><div class="elided-text">
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<p class="MsoNormal">Hello from the Atlas Mountains in Morocco,<u></u><u></u></p>
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<p class="MsoNormal">I hope somebody on the list can help me find the reason our two-year pear trees produce a honey-like sticky substance. <u></u><u></u></p>
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<p class="MsoNormal">I was told it is pear psyllia, but I do not see any insects on the trees. <u></u><u></u></p>
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<p class="MsoNormal">Somebody else suspected gummosis. I am familiar with gummosis on cherry trees, but the sap we see on the pear trees is less viscous, and forms only a thin layer that drips on leaves.<u></u><u></u></p>
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<p class="MsoNormal">Thanks for your help,<u></u><u></u></p>
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<p class="MsoNormal">Mo<u></u><u></u></p>
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