It appears wikipedia agrees with you.
In my experience (Grew up on a farm, live in the country) Pesticide is only applied to chemical insecticides, because they are rarely used; herbicides are most commonly used by name (because when you are telling someone ie. your neighbour what you are spraying the generic class is meaningless and they want to know whether spray drift will potentially damage their crops)
And biologic treatments such as viruses which may be used on certain insects are called biologics.
