For several years I've been making my own blend of organic fertilizer out of cotton seed meal, kelp meal, blood meal, and bone meal. Just the other day was thinking about this practice. I'm confident that the organic amendments are better for the soil than using chemical fertilizers, but...... Almost every product in any 'organic' fertilizer relies upon or supports some non permaculture, high energy, environmentally unfriendly practice. My cotton seed meal probably comes from one of the most toxic products available and cotton farming the same land year after year is probably one of the most damaging crops as well. I'll likely continue using these products, but after the light finally went off, I'll never feel quite a good about them as before. The limited chemical fertilizer that is used, no longer looks as evil in comparison, as neither product falls in the realm of sound sustainable practices.
I'm raising chickens now, and am trying to provide forage for a large part of their diet. Even considering the commercial food that they eat, the foot print from a few free range chickens in the middle of a 130 parcel of land, is probably far less than the impact of many organic ingredients that come from intensive commercial farming practices or those ingredients that come from other more destructive practices. In the future, I'll probably rely more on our compost with its home grown browns, greens, and chicken manure and our worm castings from our vermiculture box.