This is the stuff you're actually buying in a jerrycan. It still needs to be diluted before you can use it.

to this end, you make a 4-8% solution by adding water. Which, by their calculation, equals 40-80 ml of the concentrate per liter water. A logical calculation and easy enough for a farmer to handle.

This diluted solution is then sprayed onto the crop; you are to use somewhere between 60 L and 200 L per ha.

When referring to the quality of water and its suitability for spraying (it should not have naturally occurring chemicals that might react with the pesticide/herbicide/fungicide etc. being used) people may well use 'eau de pulvérisation' (water (suitable) for spraying), but I think more than anything this term refers simply to the water into which the xxxxicide etc. is mixed (though it must of course be fit for purpose). It is simply the 'water used to make the mix' or spray water.

"2,4-D amine activity is also reduced by bicarbonate ions in SPRAY WATER, especially when low rates (0.34 L/ac) are used"
" MSU recommends adding 17 pounds of ammonium sulfate to the SPRAY WATER before the glyphosate is added."

If you are dosing at 8%, 100 litres of spray water will come to 108 litres of spray mix (bouillie, eau de bouillie). Which of course really means that you have 7.4% of xxxxicide in your mix, but it hardly matters since farmers will overdose and overspray in any case).

--------------------------------------------------
Note added at 10 hrs (2022-03-24 23:24:11 GMT)
--------------------------------------------------

Forgot these:

"Water with 200 mg/L CaCO3 can cause problems for chemical SPRAY WATER; the suggested upper limit of hardness for water used for CHEMICAL SPRAYS is 300 mg/L." (admittedly this could be parsed differently, i.e. as 'water for chemical sprays' rather than 'spray water for application of chemicals').

"Most pesticides perform best in slightly acidic SPRAY WATER with a pH of 4.0 to 6.5. Those in solutions above pH 7.0 are at greater risk of breaking down. Buffers lower the pH of SPRAY WATER and help stabilize it at a constant level."