There are quite a few variables at play here like moisture content, age, strain, how it was grown, terps evaporating etc. Its hard to say, but I'm inclined to lean towards it being moreso because of the strain and it been older, drier bud.
Organic doesn't mean pesticide free. It seems like the only solution is growing your own stuff.
I am curious though, I've heard stories of growers having their crop fail tests because of pesticides found that aren't even relevant to marijuana. I believe it was said that the injection tubes in...