>They want to increase profit yield. If more pesticide produces more revenue than the cost of the stuff then they'll want to use more.
>You're free to do research on this on your own. I'm not interested in sourcing links for you. I will amend that it's moreso herbicides than pesticides.
I have done and continue to do research in this field which is why I am perplexed by what you're saying; it doesn't make sense.
Applying more pesticide doesn't increase profit; it lessens due to the added cost and diminished returns. You'll be hard-pressed to find an agriculture operation applying more pesticide than absolutely necessary.
The advances in agriculture technology has lessened the amount of product application necessary, not increased it.