And almost infinitely easier to stop. All we need to do is ban a relatively small number of insecticides and insect populations will rebound in a very small number of years.
You should probably write up your findings so you can gather a lot of research money and fame. /S
If only things were that simple...
I am not sure if pesticide usage has increased in Western Europe since the early ninetees. But I am certain that agriculture has been de-intensified as a whole in the former GDR. And it's not an insect paradise here...
In France in 2010, they signed some "green pact" promising to reduce the quantity of pesticides by 30% before 2020. Reality check: pesticide use grew by nearly 20% since this "pact".