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Kurt from St. Anne, Il writes

How do I mix Adonis 75 WSP for ash borers?

Answer:

The easiest way to apply the Adonis 75 for systemic use is by performing a soil drench. Each bag contains 4 x 2.25 oz. water-soluble packets. Each packet makes 25 gallons of of mixed solution. If you do not have a way to mix up 25 gallons at a time than you cannot use this product as it comes pre measured.  The Adonis 75 WSP is designed to be used in large capacity containers and is usually used by commercial applicators. Most home owners would use one of the following liquids which have the same ingredient but much easier to measure out in smaller quantities.

Merit 2F Insecticide is an excellent choice for a soil injection systemic control for emerald ash borers. Please refer to the product label prior to application for complete usage instructions. You will need to have measurements of the trees diameter or the shrubs height to determine how much product you will need to apply.  Most people use a 5 gallon bucket to dilute the product with water. 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 foot of shrub height (or inch of trunk diameter for trees) but you may use 1 quart -1 gallon of water per foot of height (or inch of trunk diameter for trees) as well. 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 after applications to encourage uptake.

 

Answer last updated on: 04/12/2017

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