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<p class=MsoNormal>Hi<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>In Saskatoon, we are having problems with many of our black
ash starting to decline when they are 15-20 years old. They have a few
different symptoms but typically we see leaf drop, branch death and delaminating
bark. All of the trees are grafted onto green ash root stock. When
we dissected the graft we saw a very clear line at the graft. It looks
like the graft did not form properly. There was no obvious overgrowth at
the graft but there is a kink at the graft that becomes more pronounced with
age. Not all black ash are affected but we only began planting in the
early 90s.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Has anyone experienced graft problems with ash or similar symptoms
in other trees? <o:p></o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Jeff
W. Boone<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Entomologist
B.Sc. M.Sc <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>(306)
975 3466<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>(306)
220 5368 (cell)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>1101
Ave P N<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Saskatoon
SK<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>S7K
0J5<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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