worm grunting n.— «Earthworms are sensitive to low-frequency vibrations. These drive some types of earthworms to the surface, and in the southeastern US is used in a practice known as “worm grunting,” by scraping a piece of metal on...
compost tea n.— «Other methods at the site include earthworm bins, compost “tea” brewers and a complex bioreactor that is designed to produce heat and energy.» —“Garbage In Compost Out—Low-Cost Source Of Fertilizer Is...