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Scott from Elma, Ny writes

How much Safari 20SG do I mix per gallon for bark application against Emerald Ash Borers?


You would use 12 - 24 oz of Safari 20SG Systemic Insecticide with Dinotefuran per gallon depending on bark type and thickness, one gallon of spray solution will typically cover 65 - 85” of cumulative trunk diameter (1.5 - 2.0 fl oz per inch of trunk diameter) when applied to trunk between soil surface and 4.5 feet above soil surface. Spray bark on root flare (buttress roots) and on trunk between soil surface and 4-5 feet above the soil surface. Adjust nozzle to uniformly distribute spray over the entire circumference of the tree trunk and buttress roots. Wet bark just to the point of saturation and run off onto soil. Apply ONLY with a low volume sprayer operated at less than 20 PSI to prevent tree damage, bounce back and drift of spray droplets. Time applications to coincide with when most vulnerable pest life stage is present on plants. Do not apply to wet bark, during rainfall or if rain is expected within 12 hours. Control may be less effective in trees with thick bark, and at times when trees are not actively growing or transpiring.

Answer last updated on: 06/28/2016

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