[CANUFNET] Question about Tree Azin

[Elaine Ethier]

Hello,
One other significant assessment could be that the basswood (Linden ) (Tillia sp.) has reacted to very high abnormal temperatures and/ or combined with severe drought. Hydric stresses can often cause shedding leaves with brown tips or fully dried with a live stalk. When all extremes are reached the tree stresses to a point of shedding green leaves it cannot nourish. Many species will react to extremes and shed variable amounts of leaves, some trees will recover and be healthy some with multiple stresses may not recover. Check for bud formation to see how the tree is reacting to its bio program for next year.
Elaine Ethier

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________________________________
De : CANUFNET <canufnet-bounces at list.web.net> de la part de Elaine Ethier via CANUFNET <canufnet at list.web.net>
Envoyé : Wednesday, August 31, 2022 10:24:37 PM
À : Canadian Urban Forest Network <canufnet at list.web.net>
Cc : Elaine Ethier <elaine.ethier at umontreal.ca>
Objet : Re: [CANUFNET] Question about Tree Azin

Hello,
Signs and symptoms must be clearer than fallen leaves. Why would TreeAzin be suspected for Spongy Moth? The company has data for your questioning. Does anyone have this in reference as a tree care ?

Elaine Ethier
Plani Gester
Aménagement, foresterie urbaine

Le 31 août 2022 à 10:51, Iola Price via CANUFNET <canufnet at list.web.net> a écrit :



Hello CANUFNET moderator.  Although I am not a forester or arborist, people often ask me questions about trees.  One person is concerned that a multi-trunk basswood was adversely impacted by spongy moth control with Tree Azin – leaves are turning brown and dropping on the injected tree but I don’t think all limbs or trunks are affected.  I have also found fallen basswood leaves that are not brown.  I am not sure how much of the above information to include in the question.  Iola Price Ottawa 613-746-6145.



Has anyone ever had an impact on a tree from stem injection of Tree Azin for spongy moth caterpillar control?  The tree in question is a large basswood and it was injected at the time of caterpillar emergence.  Iola Price
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