hi.
i'm interested in applying a pesticide which, when used as i plan to and as directed by the label, one uses 12 ounces of product to one gallon of water through a fertilizer injector set at 1:100.
the total volume of pesticide i need, including a little padding, is 8 gallons, not of pesticide concentrate but of diluted product.
how much pesticide do i need and how in how much water should i dilute it? i have a thought, but i'm not sure and would appreciate help...
thanks.

hi.
i'm interested in applying a pesticide which, when used as i plan to and as directed by the label, one uses 12 ounces of product to one gallon of water through a fertilizer injector set at 1:100.
the total volume of pesticide i need, including a little padding, is 8 gallons, not of pesticide concentrate but of diluted product.
how much pesticide do i need and how in how much water should i dilute it? i have a thought, but i'm not sure and would appreciate help...
thanks.

Suddenly, I'm having flashbacks to high school math word problems...*twitch, twitch* :eek:

Any insecticide that requires 12 ounces for 8 gallons of product is suspect in my book. Hope that it is water based. Petroleum distillate based insecticides are dangerous to plants and to humans as well. A dry granular or powder based insecticide that dissolves well in water is much preferred. Merit is one of the best out there for low mammalian toxicity. You only need 1/8 teaspoon/gal. It does have the drawback of stimulating mites to lay more eggs so I add the miticide Tetrasan when I spray as well as Enstar 11. Enstar by itself is better (and safer) than most of the insecticides available a few years back.
What insecticide to you plan to use???
Dean

Let's do the math. To be exact:

12 oz + 128 oz of water = 140 oz of 8.57% solution, to be diluted 100:1 by setting on sprayer/applicator (= less than 0.1% on the plant).

8 gallons applied requires 0.08 gallons of 8.57% solution.

128 oz x 0.08 = 10.24 oz of solution, to be mixed from
0.88 oz of concentrate & 9.36 oz of water.

With 29.6 ml to an oz, you need 26 ml of concentrate to 277 ml of water.

Kim

thanks. it's a product called safari, a new neonicotinoid (sp?).
i ended up doing a spray (at 1 tsp of pesticide per gallon of water) instead of a drench. (i didn't end up spraying until monday so i was able to ask the pesticide guy at my greenhouse supply company...)