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George from United States writes,

What is the formula for Imidapro 2SC on multiple trunk trees or shrubs?


Shrubs: Imidapro 2SC is labeled to be used on most non-edible plants. You will use 0.46 to 0.6 fluid ounces (14 to 17 mL) per 1,000 sq. ft or .1 -.2 fl oz of product per foot of plant height.(you can mix the product in the amount of water that is easy for you to handle since water is only the carrier (use at least 2 gallons of water per 1,000 sq ft for broadcast sprays or at least 1 pint of water per ft of plant height)
Trees: When using the ImidaPro 2SC as a soil drench for Hemlock Woolly Adelgids you should use 0.1-0.2 fl. oz. (3 ml - 6 ml) of ImidaPro per inch of trunk diameter (D.B.H.) diluted in 1 pint - 1 gallon of water per inch of trunk diameter per the product label.  The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of trunk diameter but you may use 1 quart -1 gallon of water per inch of trunk diameter.
Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested.  Since sandy soils can accept more water, using the higher volume of water is preferred. After the soil drench has been applied you should water it in with at east 1/2 inch of water. Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved. Insecticides applied to the soil are taken up by the roots and trans-located throughout the tree or shrub. Root/soil drenches offer the advantage of requiring no special equipment to apply (other than a bucket or watering can). However, surface layers of organic matter, such as mulch or leaf litter, can bind the insecticide and reduce uptake. Before applying drenches, it is important to remove or pull back any mulch or dead leaves so the insecticide solution is poured directly on the mineral soil. It is also important to keep the soil around the tree or shrub moist for the next 7-10 days.

Answer last updated on: 08/20/2014

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