Merla, perhaps I don't understand the registration issues. Why do you need registration for preps? If you spray homeopathic treated water, why does it need to be certified for OG? Is this because the weed board needs to claim it as a pesticide? Does compost tea need to be certified? Sewage sludge isn't certified because of the danger of heavy metals. Clopyralid pesticide is a serious problem that just showed up last year. The chemical is used in as a pre-emergence herbicide under the name "Confront". Usage is restricted to licensed applicators, but that include lawn companies. These same companies deposit their grass clippings in local compost yards. It turns out that clopyralid is completely persistent -- almost immune to composting. So anyone who uses that compost for planting mix gets zapped. The problem hit commercial growers last year and was documented by local gardeners. I'm not sure the extent to which farmers use the chemical, non-organic straw bedding may be affected. One more reason to make your own compost on-site and avoid brought-in stuff
========================== Dave Robison
