Tips For Use
No dilution is required; this product is intended to be applied undiluted directly into the trunk or branches of trees in order to provide systemic control of insect pests.
SilvaShield Injectable Tree Insecticide can be used as directed on ornamental trees in residential areas, business and office complexes, shopping complexes, multi-family residential complexes, golf courses, airports, cemeteries, parks, playgrounds, and athletic fields. SilvaShield also can be used in commercial forestry production, nurseries, greenhouses, and in state, federal, county and local recreational forests.
The active ingredient in SilvaShield Injectable Tree Insecticide has sufficient residual activity so that applications can be made preceding the attack of the trees by target pests. SilvaShield Injectable also controls existing infestations of most labelled pests. If the level of infestation is severe, the high label rate for the targeted pest is recommended.
Systemic activity occurs only after the active ingredient is translocated upwards in the tree. In some cases, translocation can take 10 days or longer, depending on the transpiration rate of the treated plant. The need for an application can be based on historical monitoring of the site, previous records or experiences, current season adult trapping or other methods. For best results (i.e., to ensure uptake), application should be made when the tree is actively transpiring. Less than satisfactory results, including slow or reduced impact on beetles and larvae, may occur if trees are suffering from lack of moisture, thereby reducing translocation of the active ingredient.
For best results, dedicated injection equipment is recommended.
Do not use on fruit or nut trees intended for food use. Do not use on trees likely to be used by commercial beehives (see additional information on label).
If poisoning occurs contact a doctor or Poisons Information Centre. Phone Australia 131 126.
For further information, refer to the Safety Data Sheet (SDS).
Comparison of Trunk Injection vs Soil Injection:
To compare the amount of active ingredient applied between soil injection with a suspension concentrate and trunk injection with SilvaShield
For a 50 cm diameter tree, at label rates, 28 g of active ingredient would be required via soil injection whereas only 3-5 g of active ingredient would be required via trunk injection
How Easy Is It to Inject Trees?
Appropriate injection equipment is necessary in order to efficiently and effectively use this product. A certain level of expertise is also required to ensure that injection is carried out properly. It is recommended that trained arborists or otherwise experienced or qualified persons carry out the treatment with this product.
How Long Does It Take to Inject a Large Tree?
Depending on the application equipment used and the level of expertise of the person carrying out the treatment a large tree (eg. 100 cm in diameter) can take as little as 10 minutes to treat.
Does Injection Damage the Tree?
The chemical itself has been shown not to cause significant damage to a wide range of tree species when injected directly using a number of different injector systems. Trials have shown that compartmentalisation of the injection points occurs after application and there is no evidence to suggest that direct trunk injection causes any long-term structural or physiological damage to the tree.
How Does Trunk Injection Protect the Rest of The Tree?
The Active Ingredient in Silva Shield is imidacloprid which is taken up systemically through the tree vascular system and distributed to areas such as the leaves.
How Long Does Treatment with Silvashield Protect the Tree?
Trials with eucalypts and thaumastocoris have shown that a single treatment of SilvaShield can control insect numbers for a period of 3 years. The length of protection conferred against other pests in other tree species has not been determined but there is evidence from other applications to suggest that extended protection could be expected.
Withholding Period Details (WHP):
- Not applicable when used as directed.