How can you know? You are not a farmer that I know. The normal dose is 2 at 3 l / ha and the tests are done in soil which is analyzed after shots.
https://asso-base.fr/IMG/pdf/presentati ... 17.txt.pdf
You do not have to be a farmer to notice this mix between agrochemistry and agrobiology, which is the case of this PDF. If you're Did 67, he talks about it professionally.
I come back to it again, but it's like mixing between natural treatments and chemical treatments, one hiding the curative action of the other: which is the most effective, the most necessary? Or again and always the vaccines developed at the same time as the general hygiene: which is the most effective, the most necessary and especially the least dangerous for the health of the populations. We can understand the farmers who were trapped by the productivist system that was to enrich them galore and which only a few have benefited. The others are in debt to the neck, they have to fertilize the soil, treat permanently to produce plants selected for their immediate yield, but biologically fragile, sick having even to grow, etc ... and, oh miracle additional, the chemists have found a cheap product designed to destroy their grassy "pests" to gain some extra pennies.
What you do not want to understand is that ALL synthetic products, and in any field whatsoever, are dangerous for the health of plants such as animals and even microorganisms of all kinds.
The people of my generation, and the previous ones, still remember the debates between the old people who practiced ancestral culture and the young people who saw in agrochemistry (stuffing skull of this same industry) the solution of the future in total ignorance of course, what has been going on for a few decades now, and that consumers, more and more suspicious of agrochemicals, no longer want and this is not a question of current government or precedents.
More and more people want organic (vilified yesterday by those who recommend it today, as usual) they turn to homeopathy and other non-aggressive therapies, want healthier homes in their homes. construction, etc ... and of course more toxic treatments that have been revealed in the destruction of the bees and that the undecided have been able to notice and of which Monsanto is to be the most representative of this destruction of the life.
"We make science with facts, like making a house with stones: but an accumulation of facts is no more a science than a pile of stones is a house" Henri Poincaré