: Treeazin Effectiveness Study 2008-2010 – BioPesticide

These Results and Recommendations are based on the fact that any reasonably priced  pesticide is banned in Ontario because of Dalton McGuinty's need to save Ontario from Health Canada Approved Pesticides like Imidacloprid or (EPA) emamectin benzoate.

Be sure to Read the Scribd Document below referencing Blair Helson from Natural Resources Canada, he seems to be promoting/selling Unregistered Neem Oil in there. This study addresses the need for finding sound and effective options for managing forest insect pests in Canada in the face of the declining availability and popularity of conventional chemical insecticides.

TreeAzin does not kill the adult Ash Borer.

Re: Nicole Mckenzie Paper Co Author – Stem injection of imidacloprid, emamectin benzoate and neem for control of the brown spruce longhorned beetle Blair Helson, Jon Sweeney, and Dean Thompson. Canadian Forest Service, Natural Resources Canada, Great Lakes Forestry Centre.

There have been studies where researchers have purposely wounded Ash trees by removing the bark to cause damage to the tree, this in turn attracts the Emerald Ash Borer to the damaged trees as sacrificial trees, leaving the healthier trees alone.

Many Data Gaps have been documented about Azadirachtin during the Peer Review assessment in 2009 by the European Union. 

Data Gaps on Frog Toxicity has caused Health Canada to embark on a SPECIAL REVIEW OF GLYPHOSATE (Josette Wier v Minister of Health Nov 2011)  Her lawyer claims this proves Glyphosate is dangerous.

Azadirachtin is OMRI Listed, This is supposed to mean its safe.  But OMRI products are not any safer than any Health Canada Approved Pesticide, Including Synthetic Products.  Some OMRI Listed Ingredients/Products cause cancer in Rats, for example. 

OMRI Listed Ingredients/Products like Azadirachtin, or Neem are not registered for use in CANADA, including FOOD Crops.

The only exception has been Emergency Registrations for TreeAzin, which the company wants to make permanent.

Conclusion on the peer review of the pesticide risk assessment of the active substance azadirachtin

European Food Safety Authority


Data gaps for all or some of the known active components of azadirachtin extract and its metabolites have been identified for all the environmental compartments. A critical area of concern has been identified since contamination of groundwater above the regulatory limits cannot be excluded.  Degradation of the polycyclic structure common to all known active components of azadirachtin in the environment has not been demonstrated.  Azadirachtin is very toxic to aquatic organisms


If any of the above statements are inaccurate please leave a comment on the blog and let us know.



Past Municipal EAB Experiences

John McNeil (Oakville, Ontario) Excerpts:




McKenzie and Grimalt Papers both papers include Joe Meating Bioforest Technologies


Control of conifer defoliators with neem-based systemic bioinsecticides using a novel injection device

Blair V Helson, D Barry Lyons, Kevin W Wanner, Taylor A Scarr

The Canadian Entomologist, 2001, 133:(5) 729-744, 10.4039/Ent133729-5


A systemic tree injection tube was designed to introduce the required volumes of neem-based bioinsecticides into conifer trees. The device consists of plastic tubing attached with hose clamps to a maple sap spile at one end and a tubeless automobile tire valve at the other end. A hole is drilled in the tree, the spile is hammered into the hole, the device is filled with the systemic insecticide, and the system is pressurized by attaching a bicycle pump to the tire valve. The parts are readily available, the device is simple to construct and easy and quick to install on a tree, application volumes are adjustable, and the device is reusable. This device has been used successfully to inject 188 trees representing four conifer species in either spring or fall, primarily with neem formulations but also with dimethoate, imidacloprid, and acephate. In most cases, all of the material was injected into the trees without leakage, although neem formulations were characteristically slow to enter the trees and certain neem formulations were not injected completely at volumes above 15 mL per injection tube. Dosages of 0.2 g azadirachtin/cm of diameter at breast height (dbh) or less provided control of pine false webworm, spruce budworm, cedar leafminers, gypsy moth, and introduced pine sawfly on red pine, white spruce, eastern white cedar, white pine, and white pine, respectively. Dosages as low as 0.005 g active ingredient/cm of dbh applied with injection tubes in either one or two holes per tree resulted in a 95% reduction in defoliation of mature (mean dbh ± SD = 23.4 ± 3.3 cm) red pine caused by pine false webworm.


This study addresses the need for finding sound and effective options for managing forest insect pests in Canada in the face of the declining availability and popularity of conventional chemical insecticides.


Pesticides Can Protect Valuable Trees from Emerald Ash Borer


Purdue University.

West Lafayette, Indiana (April 6, 2009)–Homeowners in or near areas infested with emerald ash borer can protect their ash trees from the invasive insect by applying pesticides in April.

If applied properly, these pesticides can protect healthy ash trees from emerald ash borer (EAB) infestation for an entire year.

"For healthy trees, pesticides provide effective protection against EAB," said Jodie Ellis, Purdue University entomologist. "For ash trees 45 inches in circumference or less, homeowners can purchase products at their local garden centers and do the application themselves."

Homeowners should use products in the form of a soil drench that contain a formulation of 1.47 percent imidacloprid.

"Pesticides sprayed on the tree leaves have little effect on EAB because EAB larvae, the immature wormlike stage of the insect, feed under the tree's bark," Ellis said. "Therefore, the goal is to distribute the pesticide under the bark so that feeding larvae will be killed. With a soil drench, the pesticide is mixed in a bucket with water and then poured around the base of the tree. The tree's roots uptake the chemical and spread it through its vascular system."

To mix and apply a soil drench, homeowners should follow label instructions based on the tree's circumference in inches. For healthy ash trees larger than 45 inches in circumference, not enough product gets beneath the bark to protect against emerald ash borer. In these situations, a professional arborist can protect the tree.

"Larger trees will need stronger formulations of pesticides injected directly into the tree," Ellis said. "A certified arborist will have access to both the special equipment and the pesticides necessary to provide effective EAB protection."

On smaller trees professionals can use imidacloprid, which should be applied annually. On larger trees they may use a newer product called emamectin benzoate, which can be applied every two years.

When determining whether or not a tree is a good candidate for protection, Ellis said there are a few signs to look for.

"Because of the cost and effort involved, it's not usually possible to protect all the ash trees in a wood lot," Ellis said. "But homeowners can protect individual ash trees that are valuable to their landscapes. These should be healthy trees that don't have thinning canopies or dead limbs."

As an alternative or supplement to treatment, homeowners whose trees are mostly ash might want to consider planting some different species, Ellis said.

"If you're in or near an area where EAB has been confirmed, replant your landscape with a different species before EAB kills off the ash," she said. "By the time the unprotected ash trees are dead there will be established trees in place to lessen the shock of losing the ash."

For more information on tree protection options and a list of replacement tree species, visit the Purdue emerald ash borer Web site at Questions also can be directed to Ellis at (765) 494-0822,

Jodie Ellis