Yea, great stuff. The kind of thing that makes you realize why we as gardeners have to make sure that we are doing no harm; the DDT of the Fifties is finally behind us, but "new" perils lurk around every corner (non-native invasives, reduction of genotype due to introduction of cultivars, water pollution by water soluable nitrogen fertilizers, destruction of soil flora by chemical use; as our knowledge grows so does the list of possible dangers).
The more I know, the more I think that we screwed up getting away from organic practice. I am always besieged for advice on gardening, but when the answer I give is not a "magic bullet", (I.e., spray this, or drench with that) there is a sense of dissappointment; "I have to think about doing that." or "That won't cure it instantly!". The real problem with chemical gardening is nothing really wants to live in those conditions; we need to continually coddle and supplant good conditions with chemical corrections to whatever new problem arises. Good organic soil is the mainstay of healthy plants; the organic garden shines not when things are easy, but when things get hard, and those junkie gardens hopped up on soluable nitrogen and an overabundance of micronutrients start to crash because all they can tolerate are perfect conditions. We have got to stop raising these hothouse gardens and remember that no one is a better gardener than Mother Nature, and we should all start using her techniques (and plant pallette)...Then maybe we can all watch wonders like those hummers in our own backyard!